| evaluation of the efficacy and safety of single administration of 4.7-mg deslorelin acetate implants on egg production and plasma sex hormones in japanese quail (coturnix coturnix japonica). | to evaluate the effects of 4.7-mg deslorelin acetate implants on egg production and plasma concentrations of 17β-estradiol and androstenedione in japanese quail (coturnix coturnix japonica) over 180 days and assess safety of the implants in quail via gross and histologic examination. | 2013 | 23363360 |
| avian high-dose toxicity of cyanobacterial biomass. | previous studies using oral administration of environmentally relevant doses of cyanobacterial biomass containing microcystins (mcs) induced only sub-lethal effects in experimental birds. therefore, the objective of this study was to obtain data on avian high-dose toxicity of mcs and compute ld50, if possible, following the natural oral route of administration. | 2012 | 23353861 |
| risk of combined exposure of birds to cyanobacterial biomass containing microcystins, acetylcholinesterase inhibitor and anticoagulant. | the objective of this study was to examine the hypothesis that a combination of cyanobacterial biomass containing microcystins, acetylcholinesterase inhibitor and anticoagulant can enhance avian toxic effects produced by single exposures only. | 2012 | 23353860 |
| risk of single and combined exposure of birds to non-steroidal anti-inflammatory drugs and lead. | pharmaceuticals and heavy metals such as diclofenac and lead, respectively, have been identified as environmental contaminants toxic to birds and posing serious threats to declining populations of raptors worldwide. the aim of the present study was to test the hypothesis that a sublethal combination of non-steroidal anti-inflammatory drugs and lead induces more pronounced effects than single exposures in birds. | 2012 | 23353858 |
| post-hatch changes in the immunoexpression of desmin, smooth muscle actin and vimentin in the testicular capsule and interstitial tissue of the japanese quail (coturnix coturnix japonica). | the post-hatch development of immunoreactivity to desmin, smooth muscle actin (sma) and vimentin in the testicular capsule and interstitial tissue of day-old to adult quails was described in this study. the tunica albuginea of the testicular capsule was composed mainly of myoid cells. a zonal arrangement of desmin and sma immunostaining was observed in myoid cells of the tunica albuginea in 1- to 24-day-old quails. immunostaining for sma and desmin was uniform in the tunica albuginea of adult bi ... | 2013 | 23351155 |
| production of reactive oxygen species, gene expression, and enzymatic activity in quail subjected to acute heat stress. | the aim of the present study was to evaluate the effect of acute heat stress on the production of mitochondrial reactive oxygen species (ros), the gene expression of the avian uncoupling protein (avucp) and glutathione peroxidase (gpx 7), and the activity of the enzyme gpx in the liver of meat quail. two groups of 15 meat quail (coturnix coturnix japonica) that were 23 d of age were initially housed individually in metallic cages. a period of 7 d was provided for the 2 bird groups to adapt to th ... | 2013 | 23148249 |
| japanese quail acute exposure to methamidophos: experimental design, lethal, sub-lethal effects and cholinesterase biochemical and histochemical expression. | we exposed the japanese quail (coturnix coturnix japonica) to the organophosphate methamidophos using acute oral test. mortality and sub-lethal effects were recorded in accordance to internationally accepted protocols. in addition cholinesterases were biochemically estimated in tissues of the quail: brain, liver and plasma. furthermore, brain, liver and duodenum cryostat sections were processed for cholinesterase histochemistry using various substrates and inhibitors. mortalities occurred mainly ... | 2013 | 23146311 |
| centromere positions in chicken and japanese quail chromosomes: de novo centromere formation versus pericentric inversions. | chicken (gallus gallus domesticus, gga) and japanese quail (coturnix coturnix japonica, cco) karyotypes are very similar. they have identical chromosome number (2n = 78) and show a high degree of synteny. centromere positions on the majority of orthologous chromosomes are different in these two species. to explore the nature of this divergence, we used high-resolution comparative fluorescent in situ hybridization mapping on giant lampbrush chromosomes (lbcs) from growing oocytes. we applied 41 b ... | 2012 | 23143647 |
| changes in plasma gonadotrophins, 17β-oestradiol, progesterone, prolactin, thyroxine and triiodothyronine concentrations in female japanese quail (coturnix coturnix japonica) of a heavy body weight line during photo-induced ovarian growth and regression. | 1. simultaneous changes of the width of the cloacal opening and plasma luteinising hormone (lh), follicle stimulating hormone (fsh), 17β-oestradiol, progesterone, prolactin, thyroxine (t(4)) and triiodothyronine (t(3)) during photo-induced ovarian growth and regression were measured in commercially bred japanese quail from a heavy body weight line. 2. somatically mature female japanese quail were transferred from short days (light:dark 8l:16d) at 10°c to long days (16l:8d) at 20°c, and sexually ... | 2012 | 23130587 |
| condition-dependent strategies of eggshell pigmentation: an experimental study of japanese quail (coturnix coturnix japonica). | a relationship has been suggested between eggshell colour and female body condition based on the opposing antioxidant properties of the two main eggshell pigments: the antioxidant biliverdin (blue-green) and the pro-oxidant protoporphyrin (brown). we hypothesized that experimentally food-restricted females with low antioxidant capacity would deposit more protoporphyrin and less biliverdin in their eggshells, resulting in eggshells of reduced brightness but increased colour intensity. two eggs we ... | 2013 | 23125343 |
| toxic interaction between fumonisin b1 and moniliformin for cardiac lesions in japanese quail. | this study examined the effects of fumonisin b1 (fb1) and moniliformin (m) on the heart of japanese quail (coturnix coturnix japonica). three hundred and ninety day-old japanese quail were randomly divided into four groups: 1) fb1 alone (fx), 2) m alone (mx), 3) fb1 and m (fm), and 4) chick mash alone (cx). we used three pen replicates of 35 quail per pen in groups fx, mx, and fm and three pen replicates of 25 quail per pen in group cx. gross and microscopic changes in the heart were studied in ... | 2012 | 23050472 |
| evidence for estrogen receptor expression during medullary bone formation and resorption in estrogen-treated male japanese quails (coturnix coturnix japonica). | the temporal expression of estrogen receptor (er)-α and er-β mrna was examined in male japanese quails. femurs of quails receiving 17β-estradiol underwent rt-pcr and histochemical analysis 1 to 15 days after treatment. untreated quails were used as controls (day 0). between days 0 and 5, cells lining the bone endosteal surface differentiated into osteoblasts, which in turn formed medullary bone. expression of er-α was already observed on day 0 and increased slightly during bone formation whereas ... | 2012 | 23000578 |
| age-related changes in mitochondrial ucp, ant and cox iii gene expression in the breast muscle of quails (coturnix coturnix japonica). | efficient conversion of food into body mass has been associated with altered gene expression of some proteins of the electron transport chain. we evaluated the effect of age on mrna expression of uncoupling protein, adenine nucleotide translocase and cytochrome c oxidase complex iii in quails. one-day-old broiler quails were sacrificed after 7, 14, 21, or 28 days. six quails of each age were slaughtered by cervical dislocation. total rna was extracted from the breast muscle and reverse transcrib ... | 2012 | 22911582 |
| pre- and post-natal stress in context: effects on the stress physiology in a precocial bird. | developmental stress can significantly influence physiology and survival in many species. mammalian studies suggest that pre- and post-natal stress can have different effects (i.e. hyper- or hypo-responsiveness) on the hypothalamic-pituitary-adrenal (hpa) axis, the main mediator of the stress response. in mammals, the physiological intimacy between mother and offspring constrains the possibility to control, and therefore manipulate, maternal pre- and post-natal influences. here, using the japane ... | 2012 | 22899536 |
| transgenic quail as a model for research in the avian nervous system: a comparative study of the auditory brainstem. | research performed on transgenic animals has led to numerous advances in biological research. however, using traditional retroviral methods to generate transgenic avian research models has proved problematic. as a result, experiments aimed at genetic manipulations on birds have remained difficult for this popular research tool. recently, lentiviral methods have allowed the production of transgenic birds, including a transgenic japanese quail (coturnix coturnix japonica) line showing neuronal spe ... | 2013 | 22806400 |
| negative allometry of docosahexaenoic acid in the fowl lung and pulmonary surfactant phospholipids. | in a recent study (comp. biochem. physiol. b. (2010)155: 301-308) we reported that the fatty acids (fa) of the avian (7 species) total lung phospholipids (pl) (i.e. lung parenchyma and surfactant together) provide allometric properties. to test whether this allometric scaling also occurs in either of the above components, in six gallinaceous species, in a body weight range from 150 g (japanese quail, coturnix coturnix japonica) to 19 kg (turkey, meleagris gallopavo) the pl fa composition (mol%) ... | 2012 | 22695520 |
| sodium levels for japanese quail at initial phases. | the aim of this research was to determine the nutritional requirements of sodium for japanese quail (coturnix coturnix japonica) during the periods of 1 to 21 d and 22 to 40 d of age, as well as to evaluate the residual effect on egg production and densitometry bone traits from 41 to 63 d. two experiments were developed. experiment 1: 360 japanese quail were used, from 1 to 21 d of age. treatments consisted of 5 sodium levels (0.06, 0.12, 0.18, 0.24, and 0.30%). experiment 2: 240 japanese quail ... | 2012 | 22499870 |
| quantitative hplc of pigments of irregularly coloured eggshells: application to aliquots of powdered shell from quail. | twelve quail eggshells from farmed coturnix coturnix japonica were separately ground to fine powder and two aliquots of each (average weights 13.86 mg and 51.90 mg) were extracted with formic acid. biliverdin (38-284 pmol/mg) and protoporphyrin (841-1666 pmol/mg) were measured by hplc. there was good agreement between the values for the corresponding samples and with those for two entire eggshells from the same source. the preparation of a homogenate as a powder from heterogeneously pigmented eg ... | 2012 | 22495788 |
| melamine residues in eggs of quails fed on diets containing different levels of melamine. | 1. an experiment was conducted to determine residual melamine concentrations in eggs of quail given diets containing different concentrations of melamine, and to estimate the time at which withdrawing melamine from the diet would result in undetectable concentrations in eggs. a total of 600 japanese quails (coturnix coturnix japonica) were randomly divided into 5 treatments, and given melamine at concentrations of 0, 2, 10, 50, and 100 mg/kg diet respectively for 30 d. from d 31 to 41, all quail ... | 2012 | 22404806 |
| effects of propolis on eggshell microbial activity, hatchability, and chick performance in japanese quail (coturnix coturnix japonica) eggs. | propolis is a sticky resin produced by worker honeybees from substances collected from plants, and it has strong antibacterial and antifungal properties. the purpose of this study was to establish the effects of propolis on egg weight loss, hatchability, chick performance, and to control microbial activity naturally occurring on eggshells. a total of 750 fresh eggs was randomly divided into 5 groups. eggs from the first group were sprayed with ethyl alcohol (70%, a), the second group was sprayed ... | 2012 | 22399742 |
| effects of ultrasonic treatment on eggshell microbial activity, hatchability, tibia mineral content, and chick performance in japanese quail (coturnix coturnix japonica) eggs. | the purpose of this study was to establish the effects of ultrasonic treatment of eggs on egg weight loss, hatchability, tibia mineral content, chick performance, and eggshell microbial activity. a total of 600 fresh eggs was randomly divided into 5 groups. treatments were no ultrasound, 35 khz for 5 min, 35 khz for 10 min, 35 khz for 15 min, and eggs sprayed with benzalkonium chloride solution at 0.02% (negative control). the eggshell microbial activity was reduced significantly at all ultrason ... | 2012 | 22334750 |
| age, photoperiod and estrogen dependent variations in the shell gland and the expression of avt in the ovary of japanese quail. | present work was undertaken to describe (i) age dependent (prepuberal-3, 4, 5 and 6 weeks old, puberal and actively laying 8 and 12 weeks old and aged 78 weeks old) (ii) photoperiodic response dependent (photosensitive and photorefractory) and sex steroid dependent (estradiol benzoate and its antagonist tamoxifen treated) variation in the ovary and shell gland activity of japanese quail (coturnix coturnix japonica). further, in view of the role of neurohypophysial peptide arginine vasotocin (avt ... | 2012 | 22310162 |
| changes in plasma gonadotrophins, testosterone, prolactin, thyroxine and triiodothyronine concentrations in male japanese quail (coturnix coturnix japonica) of a heavy body weight line during photo-induced testicular growth and regression. | 1. simultaneous changes of cloacal gland area (cga) and plasma luteinising hormone (lh), follicle stimulating hormone (fsh), testosterone (t), prolactin (prl), thyroxine (t(4)) and triiodothyronine (t(3)) during photo-induced testicular growth and regression were measured in commercially bred japanese quail from a heavy body weight line. 2. somatically mature male japanese quail were transferred from short days (light:dark 8l:16d) at 10°c, to long days (16l:8d) at 20°c; and sexually mature male ... | 2011 | 22221245 |
| phytosterol additive boosts adrenal response to acth in male japanese quail (coturnix coturnix japonica). | to investigate the adrenal effect of a phytosterol (ps) additive, 80 male japanese quail were divided into four sub-groups and fed 0, 40, 400, and 4,000 ppm of ps, respectively, for 21 days. subsequently, 50% of the birds from each dosage group were subjected to a 6-day adrenal function test, whereby they were injected with long-lasting adrenocorticotropin (acth). the remaining quail in each ps dosage group were raised under normal conditions. the groups receiving 400 and 4000 ppm ps exhibited d ... | 2012 | 22212440 |
| subulura brumpti infection - an outbreak in japanese quails (coturnix coturnix japonica). | subulura brumpti infection was observed in japanese quails and caused heavy production loss up to 10%. gross lesions were confined to caecum of the affected birds. pathological changes suggestive of acute cecal hemorrhagic enteritis were recorded. closer observation of the cecal loop revealed wavy movement with thousands of tiny worms. based on morphometry, the worms were identified as s. brumpti. condition was responded to the albendazole treatment efficiently and all the birds were recovered a ... | 2012 | 25653749 |
| spatial orientation in japanese quails (coturnix coturnix japonica). | finding a given location can be based on a variety of strategies, for example on the estimation of spatial relations between landmarks, called spatial orientation. in galliform birds, spatial orientation has been demonstrated convincingly in very young domestic chicks. we wanted to know whether adult japanese quails (coturnix coturnix japonica) without food deprivation are also able to use spatial orientation. the quails had to learn the relation of a food location with four conspicuous landmark ... | 2011 | 22163284 |
| an immunohistochemical study of ovarian follicle histogenesis in the early post-hatch japanese quail (coturnix coturnix japonica). | the early post-hatch development of immunoreactivity to vimentin, desmin, smooth muscle actin (sma) and laminin, in relation to follicle histogenesis, was described in this study. ovigerous cords in day old quails contained pre-granulosa cells and oocytes. pre-granulosa cells at the cortico-medullary junction were vimentin immunopositive. a laminin immunopositive basement membrane and desmin immunopositive mesenchymal cells lined the ovigerous cords. ovigerous cords in 3-day-old quails contained ... | 2012 | 21919950 |
| temporal pattern of locomotor activity recuperation after administration of propofol in japanese quail (coturnix coturnix japonica). | the present study evaluates the organization and complexity of the temporal pattern of locomotion after an acute administration of propofol in japanese quail by using traditional and fractal analysis. birds were administered with propofol 0, 10, 20, 40 or 80 mg/kg. ten min after administration, they were placed in an open-field apparatus and their locomotor activity was recorded during 45 min at a resolution of 0.5 s. a significant dose dependant increase in the latency to initiate ambulation wa ... | 2012 | 21724216 |
| isolation and characterization of free haem from the shell gland of quail and hen. | free haem was isolated from the shell gland of the quail, coturnix coturnix japonica, and of the fowl, galinus domesticus, and characterized by hplc-esi-ms/ms. quantification by hplc gave values of 1.17-1.40 nmol/mg quail shell gland protein for haem, 1.66-2.17 nmol/mg protein for protoporphyrin and 0.25-0.40 nmol/mg protein for biliverdin. possible implications of this previously unreported finding are discussed but they are not considered incompatible with the conclusion that all eggshell pigm ... | 2012 | 21678459 |
| adjustments of the oxygen diffusing capacity to energetic demands during the development of the quail (coturnix coturnix japonica). | one of the hypotheses that attempt to explain physiological limitations of energy budgets is the symmorphosis hypothesis, which proposes that if matching structures to functional needs were combined with the strict economy of energy and materials, the result would be an optimal organ design for the specific function it serves. evidence in favor of symmorphosis in adults is as abundant as evidence against it, but the plasticity of some morphological traits may be dependent on the ontogenetic stag ... | 2011 | 21496493 |
| genetic parameters of slaughter and carcase traits in japanese quail (coturnix coturnix japonica). | 1. genetic parameters of slaughter and carcase traits were estimated for 5-week-old japanese quail reared under the one-to-one sire and dam pedigree recorded system. data were analysed using restricted maximum likelihood (reml) with relationship matrix. records of 1244 animals from 119 sires and 156 dams were analysed. 2. an individual animal model was used which had the animals' genetic effect as the only random factor. heritability and standard errors of slaughter, cold carcase, breast, leg, w ... | 2011 | 21491239 |
| developmental toxicity of glyceryl trinitrate in quail embryos. | although glyceryl trinitrate (gtn) is used extensively to treat angina and heart failure, little is known about its effects on the conceptus during organogenesis. the goal of these studies was to investigate the effects of gtn in a model organism, the quail (coturnix coturnix japonica) embryo. | 2011 | 21472843 |
| the ossification of the pectoral girdle and wing skeleton of the quail (coturnix coturnix japonica). | the onset of ossification centres of the pectoral girdle and wing skeleton of the quail (coturnix coturnix japonica) has been studied in embryos and juvenile birds, which were sampled daily from the 4th day of incubation up to the 12th day after hatching. specimens, which were cleared and were stained with alcian blue and alizarin red s, were examined at the stereomicroscope. the furcula ossified with intramembranous ossification at the 7th day of incubation. the first centres of perichondral os ... | 2011 | 21392085 |
| [lampbrush chromosomes of the japanese quail (coturnix coturnix japonica): a new version of cytogenetic maps]. | avian oocyte chromosomes are transfomed into giant transcriptionally active lampbrush chromosomes (lbcs) at meiosis 1 diplotene. these chromosomes are a convenient tool for high-resulution cytogenetic analysis. using differential staining with fluorochromes dapi and cma3, we have constructed detailed cytological maps for lampbrush macrochromosomes 1-5 and zw of the japanese quail coturnix coturnix japonica. we also performed a comparative analysis ofmitotic chromosomes and lbcs corresponding to ... | 2010 | 21254550 |
| the influence of inclusions of vitamin e and corn oil on semen traits of japanese quail (coturnix coturnix japonica). | reported was an investigation of the effect of vitamin e (vit.e) and corn oil on semen traits of male japanese quail (coturnix coturnix japonica). from 8 to 20 wk of age, birds were raised on corn-based diets supplemented with corn oil (0 and 3%) and vit.e (national research council (nrc) recommended 25mg/kg/day/dry matter and 150 mg/kg/day/dry matter) in a 2×2 factorial manner. the diet was supplemented with corn oil and vit.e (e2c2) which provided additional n-6 polyunsaturated fatty acids in ... | 2011 | 21177050 |
| hypocholesterolemic effect of karaya saponin in japanese laying quails (coturnix coturnix japonica). | the effect of karaya saponin supplementation on the serum and egg yolk cholesterol and fatty acid composition in egg yolk were investigated in japanese quails. a total of 80 japanese quails aged 5 weeks were equally divided into four groups of 20. four levels (0, 25, 50 and 75 mg/kg feed) of karaya saponin were included in the basal diet and experiment was lasted for 6 weeks. the cholesterol fractions in the egg yolk and serum were measured by enzymatic assay, and the fatty acid composition in e ... | 2011 | 21114549 |
| the effect of different foam concentrations on sperm motility in japanese quail. | a study was conducted to determine the effect of foam extract on sperm motility in the male japanese quail (coturnix coturnix japonica). adult male quails (<12 weeks) of heavy body weight strain were housed in individual cages and divided into 5 groups according to the size of their cloacal glands. the data indicated that the size of the cloacal gland was positively correlated with the frequency of foam secretion and total foam production. one gram of freshly collected clean foam was mixed with ... | 2010 | 21076546 |
| characterization of lactate dehydrogenase enzyme in seminal plasma of japanese quail (coturnix coturnix japonica). | lactate dehydrogenase enzyme present in quail seminal plasma has been characterized. polyacrylamide gel electrophoresis and subsequently with ldh specific staining of seminal plasma revealed a single isozyme in quail semen. studies on substrate inhibition, ph for optimum activity and inhibitor (urea) indicated the isozyme present in the quail semen has catalytic properties like ldh-1 viz. h-type. furthermore, unlike other mammalian species, electrophoretic and kinetic investigations did not supp ... | 2011 | 21074838 |
| distribution, density and histochemical profiles of the lung mast cells during the post-hatching period of japanese quails (coturnix coturnix japonica). | the distribution, density and histochemical characteristics of mast cells in the lungs of the japanese quail were investigated during the post-hatching period. in the period starting from the first to the 60th day post-hatching, based on proteoglycan content, three types of mast cells, which were alcian blue-positive, safranin o-positive and alcian blue/safranin o-positive, were found to exist in the lungs. the application of staining with berberine sulphate demonstrated that, similar to the dis ... | 2011 | 20537669 |
| light microscopic study on eimeria species infecting japanese quails reared in saudi arabian farms. | japanese quails coturnix coturnix japonica reared in economic farms were individually investigated for coccidian infections. the results indicated the absence of infections in birds younger than 1 month. an eimeria infection rate of up to 80% was detected in birds 7-9 weeks old with a general infection rate of 29%. the infection rate decreased to 21.42% in birds older than 10 weeks. morphometric characteristics of freshly shed, unsporulated oocysts were taken. these oocysts appeared pale yellow ... | 2010 | 20422217 |
| expression of calcium-sensing receptor in quail granulosa explants: a key to survival during folliculogenesis. | this study investigated the potential role of the calcium-sensing receptor (car) in mediating survival of granulosa cells (gcs) in follicles of the japanese quail (coturnix coturnix japonica). immunoreactivity of car was shown in gcs of quail preovulatory follicles as well as in the remnants of the gc layer after ovulation. conversely, the car could not be detected by immunocytochemistry in the granulosa of smaller undifferentiated follicles. the presence of car in follicles destined to ovulate ... | 2010 | 20186967 |
| effects of 25-hydroxycholecalciferol and soy isoflavones supplementation on bone mineralisation of quail. | 1. the effects of 25-hydroxycholecalciferol (25-oh-d(3)) and soy isoflavones supplementation on performance, carcase recovery, bone mineral density, and tibia ash, ca, p, and serum vitamin d concentrations and alkaline phosphatase activity in the japanese quail (coturnix coturnix japonica) exposed to high ambient temperature were evaluated. 2. a total of 270 ten-d-old japanese quail were randomly assigned to 9 treatment groups, 6 replicates of 5 birds each in a 2 x 3 x 3 factorial arrangement of ... | 2009 | 19946824 |
| effect of oral cadmium and zinc application on leukocytes biological activity in japanese quails (coturnix coturnix japonica). | objective of this study was to investigate changes in biological activity of blood leukocytes in japanese quails, caused by zinc and cadmium administration. four groups of japanese quails were used. three experimental groups of quails were exposed either to cd (0.12 mg cd/quail), zn (4 mg zn/quail) or a combination of cd and zn (0.12 mg cd, 4 mg zn/quail), which were added daily to the drinking water. the fourth group was the control group. the metabolic activity of phagocytes and mitogenic acti ... | 2013 | 19863008 |
| fibroblast growth factor-2 and vascular endothelial growth factor expression in the ileocecal region of quail (coturnix coturnix japonica). | we undertook this study to immunolocalize in quail vascular endothelial growth factor (vegf) and fibroblast growth factor (fgf-2) in the ileocecal region, which is a significant entry point for intestinal immunity. diffuse cytoplasmic reaction for fgf-2 and vegf was observed in the epithelial cells of the distal ileum and proximal cecal mucosa. vegf immunoreactive cells, which give strong intracytoplasmic immunoreaction, were observed in the lamina propria of both intestinal parts. fgf-2 immunor ... | 2010 | 19824877 |
| genistein supplementation to the quail: effects on egg production and egg yolk genistein, daidzein, and lipid peroxidation levels. | genistein, a soy phytoestrogen, is a powerful antioxidant. in the present study, we investigated the effects of dietary genistein supplementation on japanese quail (coturnix coturnix japonica) laying performance and egg yolk contents of malondialdehyde (mda), vitamin a, and vitamin e. malondialdehyde is an indicator of lipid peroxidation, whereas vitamins a and e have antioxidant properties. birds (n=150; 5 wk old) were randomly assigned to 1 of 3 groups consisting of 50 birds (5 replicates of 1 ... | 2009 | 19762866 |
| structure of the oesophagus and morphometric, histochemical-immunohistochemical profiles of the oesophageal gland during the post-hatching period of japanese quails (coturnix coturnix japonica). | in the oesophagus, mucins, which originate from oesophageal submucosal glands, play an important role in the mucosal protection as a pre-epithelial barrier. in this study, the structure of cervical and thoracic parts of oesophagus of japanese quail during the post-hatching period was compared, and the contents of carbohydrate and gastric mucin muc5ac of the oesophageal glands in these parts were analysed at the light microscope levels by applying conventional histochemical and immunohistochemica ... | 2009 | 19650777 |
| ultrastructure and lectin cytochemistry of secretory cells in lingual glands of the japanese quail (coturnix coturnix japonica). | in the present study, as continuation of our previous research, japanese quail (coturnix coturnix japonica) lingual glands were investigated by means of transmission electron microscopy (tem) to understand the cytoarchitecture and the subcellular sugar distribution within the different secretory structures. indeed, glycosidic residues were visualized by applying an indirect technique of binding and the terminal sialoglycoconjugate sequences were characterized by employing sialidase digestion com ... | 2009 | 19609855 |
| age-dependent expression of avt and its oxytocic-like receptor vt3 in the shell gland of japanese quail, coturnix coturnix japonica. | the avian neurohypophyseal hormone avt is an important regulatory hormone involved in many physiological processes including oviposition; an age-related phenomenon, through its action on the shell gland. in this study, immunohistochemistry and in situ hybridization was performed to study the expression of immunoreactive (ir) avt and its oxytocic-like receptor vt3 transcript in the ovary/shell gland of japanese quail representing sexually immature, mature and old condition. our results indicate t ... | 2010 | 19505466 |
| the effects of vitamin c and e supplementation on heat shock protein 70 response of ovary and brain in heat-stressed quail. | 1. the effects of vitamin c (l-ascorbic acid) and vitamin e (alpha-tocopherol acetate) supplementation on egg production and heat shock protein 70 (hsp70) response of ovary and brain in the japanese quail (coturnix coturnix japonica) exposed to high ambient temperature were evaluated. 2. the birds (n = 540; 55 d old) were randomly assigned to 18 groups consisting of 3 replicates of 10 birds each in a 2 x 3 x 3 factorial arrangement of treatments. birds were kept in wire cages in a temperature-co ... | 2009 | 19373727 |
| tolerance of japanese quail embryos and young chicks to hypothermia. | the purpose of this study was to explore the tolerance of japanese quail (coturnix coturnix japonica) embryos and young quail chicks to a very low ambient temperature. fifty (n = 50) quail embryos at age embryonic age d 6 were placed in a cold room at 13 degrees c for 24 h. the heart rate (hr) was determined with an infrared hr sensor in an instrument called "buddy." after 12 and 24 h, the average body temperature of the embryos was 13 degrees c with an average hr of 8.7 +/- 0.9 beats per minute ... | 2009 | 19359693 |
| mucuna pruriens seed powder feeding influences reproductive conditions and development in japanese quail coturnix coturnix japonica. | this study was designed to test whether mucuna pruriens, a natural source of l-dihydroxyphenylalanine (l-dopa, a dopamine precursor) feeding, can influence development and reproductive conditions in the high food value bird, japanese quail, coturnix coturnix japonica. experiments were performed in both male and female japanese quail. one-week-old quail chicks were divided into three groups of 36 birds each. group i was provided with normal diet and served as control. group ii was provided with f ... | 2009 | 22444229 |
| effects of simulated hypo- and hyper-reproductive conditions on the characteristics of circadian rhythm in hypothalamic concentration of serotonin and dopamine and in plasma levels of thyroxine, triiodothyronine, and testosterone in japanese quail, coturnix coturnix japonica. | in this study, hypo- and hyper-reproductive conditions, as measured by concentrations of plasma testosterone in male japanese quail held on long days ld 16:8, were experimentally simulated with injections of 5-hydroxytryptophan (5-htp) and l-dihydroxyphenylalanine, (l-dopa) with 8 h and 12 h phase angle differences between them in intact and melatonin-treated birds. the effects of these treatments were assessed on the characteristics of the circadian rhythm in the hypothalamic concentration of s ... | 2009 | 19142756 |
| [effect of hypoxic argon-containing gas mixtures on developing organism]. | experimental data on the impact of argon-containing hypoxic breathing mixtures on the early embryonic growth of japanese quail (coturnix coturnix japonica dom.) are presented. the results showed that after 4-day incubation of eggs in an oxygen-nitrogen breathing mixture (13.8-15.0% o2, 86.2-85.0% n2) only 16.7% embryos reached the stage of 3.5-d development. introduction in the hypoxic mixture of argon (55% of the total volume) increased the number of embryos on the stage of 3.5-4 day of normal ... | 2016 | 19140472 |
| epigallocatechin-3-gallate supplementation can improve antioxidant status in stressed quail. | 1. heat stress causes oxidative stress, which decreases plasma antioxidants in poultry. epigallocatechin gallate (egcg), the most abundant polyphenol in green tea, is a powerful antioxidant against lipid peroxidation. this experiment was conducted to evaluate the effects of dietary egcg supplementation on performance, carcase characteristics, concentrations of malondialdehyde, lipid peroxidation indicator, vitamins c, e, a, cholesterol, triglyceride, and glucose in japanese quail (coturnix cotur ... | 2008 | 18836912 |
| effect of estrogen and its antagonist on the expression of arginine vasotocin (avt) and its oxytocic-like receptor vt3 in the shell gland of japanese quail, coturnix coturnix japonica. | avian neurohypophysial hormone arginine vasotocin (avt) is known to regulate shell gland contractility during oviposition. while studying the role of estrogen in the expression and regulation of avt and its oxytocic-like receptor vt3, using in situ hybridization and immunohistochemistry, it was observed that the expression of avt and its receptor was not detected in the shell gland of sexually immature japanese quail. however, administration of estrogen to these birds not only stimulates the gro ... | 2008 | 18678266 |
| [prenatal acoustic stimulation and feeding behavior of japanese quail chicks (coturnix coturnix japonica)]. | effects of a prenatal rhythmic tone on behavior of japanese quail chicks were studied on the next days after hatching. the acoustically stimulated chicks demonstrated a significantly more frequent following response, feeding reaction and comfortable behavior when hearing the tone as compared with their controls. bandwidths stimulating this or another behavior were determined. | 2008 | 18672521 |
| [effect of krypton-containing gas mixture on japanese quail embryo development]. | investigated were effects of gas mixture with up to 3.0 kgs/cm2 of krypton on the embryonic development of domesticated japanese quail (coturnix coturnix japonica dom.). results demonstrated absence of a serious krypton effect on japanese quail embryos. development of embryos proceeded in due course; morphometrically the experimental embryos were essentially similar to controls. it should be noted that despite exposure to acute hypoxic hypoxia during the initial 12 hours of development in the kr ... | 2013 | 18564569 |
| epoxiconazole causes changes in testicular histology and sperm production in the japanese quail (coturnix coturnix japonica). | the fungicide epoxiconazole (epox), a triazole, belongs to the group of azole compounds that are extensively used as fungicides in various fruit crops. the frequent use of agricultural lands for wintering by migrating birds can be the source of their increased dietary intake of agricultural pesticides. we investigated whether exposure to epox causes effects on avian fertility and reproduction, using the japanese quail (coturnix coturnix japonica) as a model species for the assessment of reproduc ... | 2008 | 18522476 |
| molecular aspects of avian oogenesis and fertilisation. | in this paper, we summarise studies which have been carried out on the metabolism of nucleic acids (maternal rna, dna, nucleolytic enzymes) in avian oocytes and embryos (japanese quail, coturnix coturnix japonica ) within the last 10 years in the institute of genetics and animal breeding of the polish academy of sciences. the accumulation of maternal rna in the quail oocyte during oogenesis is shown and discussed. several individual transcripts were identified in rna from the germinal disc and s ... | 2008 | 18311709 |
| the effects of tomato powder supplementation on performance and lipid peroxidation in quail. | recent studies have suggested a protective role for lycopene, an antioxidant carotenoid, in the prevention of stress including environmental stress. tomatoes and tomato products are the major dietary source of lycopene. the objective of the present study was to investigate the effect of dietary tomato powder supplementation on the performance and lipid peroxidation of meat in japanese quail (coturnix coturnix japonica) exposed to a high ambient temperature of 34 degrees c. a total of 180 ten-day ... | 2008 | 18212370 |
| supplementation with organic or inorganic selenium in heat-distressed quail. | the present study was carried out to determine the effects of different sources of selenium (se; sodium selenite [na2seo3] or selenomethionine [se-met]) supplementation on egg production, egg quality, levels of malondialdehyde (mda), and se in serum and egg yolk in heat-stressed japanese quail (coturnix coturnix japonica). the birds (n = 360; 55 days old) were randomly assigned to 12 treatment groups consisting of six replicates of five birds each in a 2 x 2 x 3 factorial arrangement of treatmen ... | 2008 | 18196210 |
| ultrastructure of pancreatic alpha and beta cells in young quails (coturnix coturnix japonica) fed aflatoxin. | the present investigation was undertaken to assess the effects of aflatoxin (af) containing diets on alpha and beta cells of the endocrine pancreas in young quails by means of light and electron microscopy. a total of thirty quails were divided into 3 groups, each comprising 10 animals. total af was incorporated into the diet of these groups, at dosages of 0 (control, group 1), 2.5 (group 2), and 5.0 (group 3) mg af/kg feed. the chicks were housed in electrically heated battery cages and exposed ... | 2007 | 18181361 |
| effects of corticosterone treatment on growth, development, and the corticosterone response to handling in young japanese quail (coturnix coturnix japonica). | corticosterone, a glucocorticoid secreted during stress responses, has a range of actions that help birds respond to stressors. although effects of corticosterone treatment have been described in several avian species, the impacts of defined increases in plasma corticosterone on early development and on corticosterone stress responses are little known. these issues were addressed by providing quail with different doses of corticosterone in drinking water from days 8 to 38 post-hatch. the cortico ... | 2007 | 17681843 |
| effect of photoperiod and estrogen on expression of arginine vasotocin and its oxytocic-like receptor in the shell gland of the japanese quail. | the avian neurohypophysial hormone arginine vasotocin (avt) is an important regulatory hormone involved in many physiological processes including fluid balance, blood pressure regulation, stress responses and reproductive events including oviposition. the mechanisms by which avt stimulates myometrial contraction during oviposition are not well established in birds. in the present study, immunohistochemistry and in situ hybridization were used to localize avt and the oxytocin-like vt3 receptor in ... | 2007 | 17627858 |
| intensity and duration of corticosterone response to stressful situations in japanese quail divergently selected for tonic immobility. | two genotypes of japanese quail have been divergently selected since the 1980s for long (lti) or short (sti) duration of tonic immobility [mills, a.d., faure, j.m., 1991. divergent selection for duration of tonic immobility and social reinstatement behavior in japanese quail (coturnix coturnix japonica) chicks. j. comp. psychol. 105(1), 25-38.], an unlearnt catatonic state characteristic of a behavioral fear response ([jones, r.b., 1986. the tonic immobility reaction of the domestic fowl: a revi ... | 2008 | 17586506 |
| the effect of soy isoflavones on egg quality and bone mineralisation during the late laying period of quail. | 1. soy isoflavones play a role in calcium and bone metabolism. poor egg quality, skeletal abnormalities and architectural deterioration of bone tissue are common problems under hot climate conditions and with increased age in poultry. 2. in this study, we investigated the effects of soy isoflavone supplementation on egg production, egg quality, bone mineral density (bmd), levels of osteocalcin (oc), vitamin d, calcium (ca), phosphorus (p) and alkaline phosphatase (alp) activity in quail (coturni ... | 2007 | 17578700 |
| asymmetry of visually guided sexual behaviour in adult japanese quail (coturnix japonica). | sexually active adult japanese quail (coturnix coturnix japonica) were trained to run across either a left- or a right-turning runway to obtain sexual access to a conspecific of the opposite sex. the birds tested with only their right eye in use showed significantly higher latencies to complete the runway task than the birds tested binocularly and those using the left eye. in all of the three experimental conditions, male birds were significantly faster than their female counterparts. generally, ... | 2007 | 17558814 |
| correlation of nitric oxide (no) activity and gonadal function in japanese quail, coturnix coturnix japonica following temporal phase relation of serotonergic and dopaminergic oscillations. | nitric oxide (no), a highly reactive and short-lived radical, is considered to be an important trigger molecule for several physiological mechanisms including gonadotrophin releasing hormone (gnrh) secretion in mammals, although there is no such information in avian literature. on the other hand, specific temporal phase relation of circadian neural (serotonergic and dopaminergic) oscillations is reported to modulate reproductive activity in many avian species including japanese quail. the presen ... | 2008 | 17512145 |
| the effects of experimental aflatoxicosis on the exocrine pancreas in quails (coturnix coturnix japonica). | the present investigation was undertaken to assess the effects of aflatoxin (af) on the exocrine pancreas in quails by means of light and electron microscopy. a total of 30 quails were divided into three groups, each composed of ten animals. total af was incorporated into the diet of these groups, at doses of 0, 2.5, and 5.0 mg of af/kg feed, ppm, respectively. the quails were raised in cages with electrical heating and 24-h lighting for a period of 3 weeks. ad libitum access was provided to fee ... | 2007 | 17486318 |
| a light and electron microscopic study of the limb long bones perichondral ossification in the quail embryo (coturnix coturnix japonica). | the perichondral ossification of the limb long bones in the quail embryo is investigated, in this study, by means of light and electron microscopy. longitudinal sections of the humerus, radius, ulna, femur, tibia and fibula stained with haematoxylin-eosin were examined by the light microscope. ultrathin cross sections were selected for the electron microscope as well. light microscopic analysis showed that the ossification began at the same time in the long bones of the wing and leg. at the embr ... | 2007 | 17312922 |
| carbohydrate characterization of quail primordial germ cells during migration and gonadal differentiation. | a selection of lectins were used to study changes in the distribution of sugar residues in primordial germ cells (pgcs) during gonadal colonization and differentiation. although the cytochemical characteristics of pgcs have been described in the chick, little is known about such characteristics in other avian species of interest to experimental biology. therefore, we studied embryos of japanese quail (coturnix coturnix japonica) by light and laser confocal scanning microscopy, using the qh1 anti ... | 2007 | 17229287 |
| gross morphological features of the lung and air sac in the japanese quail. | this study was conducted to reveal the morphological characteristics of the lung and air sacs in coturnix coturnix japonica (japanese quails). ten quails were allocated into two groups. tracheas of 5 quails with neoprene latex and 5 quails with methylmetacrylate were injected to fill the trachea and air sacs. latex embalmed animals were stored in 10% formaldehyde solution for two months. animals given methylmetacrylate were maserated in 30% potassium hydroxide at 40 degrees c for two days. lungs ... | 2006 | 17019058 |
| supplementation of the maternal diet with tomato powder and marigold extract: effects on the antioxidant system of the developing quail. | the effects of natural dietary carotenoid supplementation of the maternal diet (tomato powder and marigold extract) on transfer to the egg yolk and on the development of the antioxidant system of the young quail liver in early postnatal life were investigated. sixty japanese quail (coturnix coturnix japonica) were allocated to four treatment groups, each with three replicates consisting of four females and one male each. the quail were fed on one of four different diets for 23 d, each of them ba ... | 2006 | 16641031 |
| experimental evidence that corticosterone affects offspring sex ratios in quail. | recent studies have shown that some species of birds have a remarkable degree of control over the sex ratio of offspring they produce. however, the mechanism by which they achieve this feat is unknown. hormones circulating in the breeding female are particularly sensitive to environmental perturbations, and so could provide a mechanism for her to bias the sex ratio of her offspring in favour of the sex that would derive greatest benefit from the prevailing environmental conditions. here, we pres ... | 2006 | 16600886 |
| dietary arginine silicate inositol complex improves bone mineralization in quail. | skeletal abnormalities, low bone mass, bone deformities, and bone fractures increase the risk of osteoporosis and osteoarthritis, which are of concern from both a public standpoint and a cost-of-care burden standpoint. arginine silicate inositol complex (asi; arg = 49.47%, silicone = 8.2%, inositol = 25%) is a novel, bioavailable source of si and arg and one that offers potential benefits for vascular and bone health. skeletal abnormalities and architectural deterioration of bone tissue are comm ... | 2006 | 16553280 |
| sex differences in the organizational effects of corticosterone in the egg yolk of quail. | previously, we found that experimentally elevated plasma corticosterone was transferred to egg yolk by female japanese quail (coturnix coturnix japonica), and that the chicks hatched from these eggs grew more slowly than controls and had higher responsiveness of the hypothalamic-pituitary-adrenal (hpa) axis as adults. here, we tested whether exposure to high yolk corticosterone was responsible for the slowed growth and elevated hpa responsiveness by manipulating the steroid content of eggs direc ... | 2006 | 16430891 |
| effects of methyltestosterone on reproduction in the japanese quail (coturnix coturnix japonica). | although the hormone-mediated effects of the synthetic androgenic hormone methyltestosterone (mt) are well characterized in mammals, little is known about endocrine and other toxic effects on reproduction in birds. in a one-generation study, mt was administered to adult japanese quail (12 pairs per group) at dietary dose levels of 0, 10, 50, and 110 ppm for a period of 3 weeks. reproductive performance was severely affected in the groups receiving 50 and 110 ppm mt. in females, the egg-laying ra ... | 2005 | 16307974 |
| japanese quail selected for high plasma corticosterone response deposit high levels of corticosterone in their eggs. | poor habitat quality or body condition often correlates with high responsiveness of the hypothalamo-pituitary-adrenal (hpa) axis rather than with elevated baseline levels of glucocorticoids. we hypothesized that, for egg-laying vertebrates, high responsiveness of the hpa axis would correspond to high concentrations of corticosterone in yolk. we tested the prediction that japanese quail (coturnix coturnix japonica) selected for high plasma corticosterone response to brief immobilization (hs quail ... | 2013 | 16228941 |
| role of nitric oxide in ovarian follicular development and egg production in japanese quail (coturnix coturnix japonica). | role of nitric oxide (no) in regulating the reproductive functions at hypothalamo-hypophysealovarian axis in japanese quail was studied. in first experiment, metabolites of no, i.e. nitrite and nitrate (no2 and no3) were estimated together in hypothalamus, serum and ovarian follicles of good and poor layers. in the second experiment, different no modulators such as l-arginine (l-arg), sodium nitroprusside (snp) and n(g)-nitro-l-arginine methyl ester, hcl (l-name) were administered to the birds. ... | 2006 | 16221486 |
| effects of ethanol on brain and pancreas weights, serum sodium and potassium, and haematological parameters in quail (coturnix coturnix japonica). | poultry farmers in pakistan use ethanol for treatment of respiratory diseases and as a growth promotant, but the effects on health and production of broilers are unknown. the effects of ethanol were investigated in quail at different doses through drinking water. one hundred and twenty japanese quail of 39 days of age were purchased from a local market. they were divided randomly into five groups of 24 (groups 1, 2, 3, 4 and 5) and offered ethanol at dose rates 2%, 4%, 8% and 16%, respectively, ... | 2005 | 16191688 |
| pathological effects of formalin (37% formaldehyde) feeding in female japanese quails (coturnix coturnix japonica). | the aim of this study was to determine the pathological effects of formalin on female quails. seventy-five 1-day-old female japanese quails (coturnix coturnix japonina) were divided into five equal groups (a-e) and fed formalin daily at dose levels of 20, 10, 5, 2.5 and 0 ml/ kg feed, respectively. all birds were slaughtered at the end of the experiment -- the eighth week. no clinical signs were observed in quails fed 2.5 ml formalin/kg feed. depression, dullness and anorexia were prominent in q ... | 2005 | 16138733 |
| effects of dietary combination of chromium and biotin on growth performance, carcass characteristics, and oxidative stress markers in heat-distressed japanese quail. | environmental stress causes adverse effects in performance and antioxidant status of poultry. dietary chromium supplementation promotes the growth rate and feed efficiency of growing poultry and these beneficial effects of chromium appear to be greater under stress. biotin, a member of the vitamin b complex, is involved in the metabolism of carbohydrates, fats, and proteins. in a previous experiment, we examined the effects of chromium picolinate (crpic) as a chromium source in birds subjected t ... | 2005 | 16116248 |
| administration of pregnant mare serum gonadotropin to japanese quail (coturnix coturnix japonica): dose response over seven days and comparison of delivery by daily injection or osmotic pump. | this study is part of a research programme that aims to develop a method of hormone treatment to stimulate breeding in female birds. the aims of this study were to compare dose rates and two different delivery methods, daily injection or osmotic pump, for hormone treatment of japanese quail (coturnix coturnix japonica) with pregnant mare serum gonadotropin (pmsg). | 2002 | 16032222 |
| effects of dietary administration of cl-20 on japanese quail coturnix coturnix japonica. | hexanitrohexaazaisowurtzitane, or cl-20, is an emerging highly energetic compound currently under consideration for military applications. with the anticipated wide use of cl-20, there is the potential for soil and groundwater contamination resulting in adverse toxicologic effects on environmental receptors. presently, there is a lack of data describing the toxic effects of cl-20 on avian species. the present study describes the effect of cl-20 on japanese quail (coturnix coturnix japonica) modi ... | 2005 | 16001151 |
| magnesium proteinate is more protective than magnesium oxide in heat-stressed quail. | we evaluated the effects of dietary supplementation with mg-oxide and mg-proteinate on performance; nutrient digestibilities; malondialdehyde (mda) concentrations in serum, liver, and thigh meat; and serum cholesterol and triacylglycerol concentrations in japanese quail (coturnix coturnix japonica) exposed to high ambient temperature. the birds (n = 360; 10 d old) were randomly assigned to 12 treatment groups consisting of 6 replicates of 5 birds each in a 2 x 2 x 3 factorial arrangement (temper ... | 2005 | 15987857 |
| supplementation of zinc from organic or inorganic source improves performance and antioxidant status of heat-distressed quail. | two sources of zinc [znso4.h2o or znpicolinate (znpic)] supplementation were evaluated for their effects on performance, carcass weight, levels of malondialdehyde, and vitamins c, e, a in japanese quail (coturnix coturnix japonica) exposed to high ambient temperature of 34 degrees c. the birds (n = 360; 10-d-old) were randomly assigned to 12 treatment groups consisting of 3 replicates of 10 birds each in a 2 x 2 x 3 factorial arrangement of treatments (temperatures, zinc sources, zinc levels). b ... | 2005 | 15971524 |
| carry over (transfer) of feed-borne acrylamide into eggs, muscle, serum, and faeces - a pilot study with japanese quails (coturnix coturnix japonica). | two groups of 10 quails each were fed for 30 days on a diet containing either 663 microg feed-borne acrylamide (aa)/kg feed (group b) or 2472 microg aa/kg feed (group c) respectively. the concentrations of aa present in excreta and eggs were compared with those measured in eggs and excreta obtained from a control group (group a) fed on a diet low in aa (<10 microg/kg). the results clearly showed that the eggs of quails in group c contained approximately 53-112 microg aa/kg based on dry weight, w ... | 2013 | 15787975 |
| idiopathic intranuclear inclusion bodies in the renal tubular epithelia of japanese quail (coturnix coturnix japonica). | we report idiopathic intranuclear inclusion bodies in the renal tubular epithelia of two cases of among the 960 japanese quail (coturnix coturnix japonica) in the course of the acute oral toxicity and dietary toxicity test. basophilic inclusion bodies were seen only in the nuclei of renal tubular epithelia. we could not classify our case into any adenovirus infection by clinical signs and lesions. the inclusion bodies were only identified as adenovirus-like particles based upon the electronmicro ... | 2005 | 15785127 |
| reassessment of ecotoxicities of 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane in japanese quail under the oecd draft new avian one-generation reproduction test guideline. | ecotoxicological hazards of 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane (p,p'-ddt) were investigated by a one-generation reproduction study using japanese quail (coturnix coturnix japonica) under an organization for economic co-operation and development (oecd) draft new test guideline 206 following acute and subchronic toxicity studies. in the subchronic feeding toxicity study, tremors, convulsions, and deaths were observed with a clear sex difference, males being more susceptible than females ... | 2005 | 15748794 |
| the effect of genistein supplementation on performance and antioxidant status of japanese quail under heat stress. | genistein, a phytoestrogen found in soybeans, is a powerful antioxidant. we evaluated the effects of genistein supplementation on performance, carcass characteristics, levels of malondialdehyde (mda), homocysteine, vitamins c, e, a in japanese quail (coturnix coturnix japonica) exposed to high ambient temperature of 34 degrees c. two hundred and forty japanese quails (10 d old) were randomly assigned to eight treatment groups consisting of 10 replicates of three birds. the birds were kept in an ... | 2004 | 15732579 |
| inter-individual variability during morning choruses in japanese quail males (coturnix coturnix japonica). | we compared the organization of dawn choruses in five groups of japanese quail, coturnix coturnix japonica, males (four groups of kin-related males and one group of unrelated males). we documented the structure of chorus groups: one male sang much more than the others during the dawn peak in four of the five groups, and this regardless of the number of males in the group. the dominant singers were then removed from two similar-sized groups, one of kin-related (k3) and the other of unrelated (nk) ... | 2005 | 15714884 |
| influence of dietary culture material containing aflatoxin and t(2) toxin on certain serum biochemical constituents in japanese quail. | forty newly hatched unsexed japanese quail (coturnix coturnix japonica) chicks were fed diets containing 3 ppm aflatoxin (af) and 4 ppm t(2) toxin either singly and in combination for 35 days. sera samples were collected from six birds in each group at the end of the trial to study the effect of certain serum biochemical parameters. highly significant (p < 0.01) differences were observed for serum total protein, albumin, globulin, glucose, cholesterol, aspartate transaminase (ast), alanine trans ... | 2004 | 15702271 |
| effect of lead and chromium on reproductive success of japanese quail. | an experimental model based on application of japanese quail (coturnix coturnix japonica) lines with high (h) and low (l) concentrations of plasma lactate was designed in order to investigate the effects of lead and chromium on embryonic development and reproductive success of experimental groups representing different genotypes. during the first stage of the trial, mature males from quail lines h and l (marked as generation t) were fed subchronically for 12 weeks with lead as pb(no(3))(2) and c ... | 2004 | 15269915 |
| effect of alfalfa meal in diets of laying quails on performance, egg quality and some serum parameters. | this study was conducted to investigate the effects of increasing levels of alfalfa meal in the diet of laying quails on egg production, feed consumption, feed efficiency, egg quality, egg yolk cholesterol and selected serum parameters. in this study, 192, 10-week old quails (coturnix coturnix japonica) were evenly distributed to four groups with four replicates of 12 quails each. the control group was fed a basal diet containing 0% alfalfa meal and the remaining groups received 3, 6 or 9% alfal ... | 2004 | 15264674 |
| composition of luminal fluid secreted by the seminiferous tubules and after reabsorption by the extratesticular ducts of the japanese quail, coturnix coturnix japonica. | the present report examines the composition of luminal fluid in the seminiferous tubule (stf), rete testis (rtf), and ductus epididymidis of the japanese quail (coturnix coturnix japonica). this subject is of particular interest, both because the reproductive ducts are intra-abdominal and because sperm production is more rapid in birds than in mammals. it was interpreted that micropuncture samples of stf contain varying amounts of contamination with intracellular solute, particularly k and prote ... | 2004 | 15215190 |
| photoperiodic response of serotonin- and galanin-immunoreactive neurons of the paraventricular organ and infundibular nucleus in japanese quail, coturnix coturnix japonica. | we investigated the photoperiodic response of serotonin- and galanin (ga)- immunoreactive (ir) cells in the paraventricular organ (pvo) and infundibular nucleus (if) of the japanese quail and the interaction of these cells with gonadotropin-releasing hormone (gnrh)-ir neurons in the hypothalamus. serotonin-ir cells were located in series from the pvo to the if, and were connected with each other. the number of serotonin-ir cells differed significantly between light and dark phases on the short d ... | 2004 | 15170061 |
| effect of dietary dried tomato pulp on oxidative stability of japanese quail meat. | ninety, 21-day-old, japanese quail (coturnix coturnix japonica) divided into three groups with five subgroups each were fed a basal diet that served as control or a basal diet containing 5 or 10% of dried tomato pulp (dtp), a byproduct of the tomato-processing industry. the dtp contained lycopene and beta-carotene at 281 and 24.3 mg kg(-)(1) of dry weight, respectively. on day 42 of age, birds were slaughtered, and carcasses were trimmed for breast meat. to assess the effect of dietary treatment ... | 2004 | 15137843 |
| ascorbic acid and melatonin reduce heat-induced performance inhibition and oxidative stress in japanese quails. | 1. the effects of ascorbic acid (l-ascorbic acid) and melatonin supplementation on performance, carcase characteristics, malondialdehyde (mda) as lipid peroxidation indicator, ascorbic acid, retinol, tocopherol and mineral status in the japanese quail (coturnix coturnix japonica) exposed to high ambient temperature were evaluated. 2. two hundred and forty japanese quails (10 d old) were randomly assigned to 8 treatment groups consisting of 10 replicates of three birds each. the birds were kept i ... | 2004 | 15115209 |
| visual discrimination of normal and drug induced behavior in quails (coturnix coturnix japonica). | the ability to discriminate the physical states of others could be an adaptive behavior, especially for social animals. for example, the ability to discriminate illness behavior would be helpful for avoiding spoiled foods. we report on an experiment with japanese quails testing whether these birds can discriminate the physical states of conspecifics. the quails were trained to discriminate between moving video images of quails injected with psychoactive drugs and those in a normal (not injected) ... | 2004 | 15069613 |
| a modified chorioallantoic membrane assay allows for specific detection of endothelial apoptosis induced by antiangiogenic substances. | current in vivo angiogenesis assays allow for the assessment of vascular growth inhibition induced by a test substance, but they usually do not provide information about the mechanisms underlying such an inhibition. a potential antiangiogenic mechanism is the triggering of endothelial apoptosis in the growing vessels. apoptogenic substances can be of interest for antiangiogenic therapy specially if they specifically perform their action on the angiogenic endothelium. we have developed a modifica ... | 2003 | 15041801 |