Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| [comparative compositional mapping of chicken and quail chromosomes]. | the distribution of various isochore families on mitotic chromosomes of domestic chicken and japanese quail was studied by the method of fluorescence in situ dna--dna hybridization (fish). dna of various isochore families was shown to be distributed irregularly and similarly on chromosomes of domestic chicken and japanese quail. the gc-rich isochore families (h2, h3, and h4) hybridized mainly to microchromosomes and a majority of macrochromosome telomeric regions. in chicken, an intense fluoresc ... | 2003 | 12884522 |
| a model of avian mycobacteriosis: clinical and histopathologic findings in japanese quail (coturnix coturnix japonica) intravenously inoculated with mycobacterium avium. | mycobacterial infections are an important cause of morbidity and mortality in birds and a considerable diagnostic challenge until the disease is advanced. in order to develop more clinically useful antemortem tests, a biological model was created that replicated naturally occurring disease. japanese quail (coturnix coturnix japonica; n = 8) were inoculated intravenously with mycobacterium avium. two additional birds served as uninoculated controls. mean survival time of the inoculated birds was ... | 2003 | 12887203 |
| diagnosis of avian mycobacteriosis: comparison of culture, acid-fast stains, and polymerase chain reaction for the identification of mycobacterium avium in experimentally inoculated japanese quail (coturnix coturnix japonica). | in this study we compared culture, acid-fast stains, and polymerase chain reaction (pcr) for the detection of acid-fast organisms in fecal and tissue samples from japanese quail (coturnix coturnix japonica) that were experimentally inoculated intravenously with mycobacterium avium. for culture, three different culture media (modified herrold egg yolk with mycobactin; lowenstein-jensen [l-j]; and l-j with cyclohexamide, naladixic acid, and lincomycin) were tested to determine which medium had the ... | 2003 | 12887204 |
| in vivo release of oxytetracycline from a biodegradable controlled-release gel injected subcutaneously in japanese quail (coturnix coturnix japonica). | a long-acting, biodegradable, controlled-release formulation of oxytetracycline (cr-otc) was evaluated in 18 adult japanese quail (coturnix coturnix japonica) following a single subcutaneous (s.c.) injection. prior to characterizing the release of oxytetracycline (otc) from the cr-otc, the pharmacokinetic parameters of intravenously (i.v.) administered otc were determined. concentrations of free otc were measured using a bioassay. the plasma concentration-time profile of otc after a single i.v. ... | 2003 | 12887604 |
| aflatoxin residues in eggs of laying japanese quail after long-term administration of rations containing low levels of aflatoxin b1. | the aim was to evaluate the excretion of residues of aflatoxin b(1) (afb(1)), aflatoxin m(1) (afm(1)), aflatoxin b(2a) (afb(2a)) and aflatoxicol (afl) in eggs of laying japanese quail fed rations with low levels of aflatoxin b(1) for 90 days. the quail were randomly assigned into four experimental groups and given prepared rations containing either 0 (controls), 25, 50 or 100 microg afb(1) kg(-1) feed. thirty-two eggs per treatment were collected on days 1-7, 10, 20, 30, 60 and 90 of the aflatox ... | 2003 | 12888390 |
| the peri-albumen layer: a novel structure in the envelopes of an avian egg. | the present paper describes a novel structure, termed the peri-albumen layer, in the egg-envelopes of the quail coturnix japonica. it reacts with alcian blue and exists between the egg white and the shell membrane. ultrastructurally, it is of fine granular structure and forms a fenestrate sheet, the width of which is 190 nm or less. isolated materials of the peri-albumen layer include an alcian-blue-positive polysaccharide of 260 kda, and three glycoproteins of 160, 108 and 52 kda. the layer is ... | 2003 | 12892410 |
| effects of poppy seed meal on egg production and hatching results in quail (coturnix coturnix japonica). | this study was carried out to determine the effects of poppy seed meal (psm) on the egg production and hatching of quail. two experiments were undertaken. in the first experiment, 240 quail, reared under the same conditions, were divided into four groups of 60 birds each (which were, in turn, subdivided into four subgroups of 15 each for experimental replicates). the first, second, and third experimental groups were fed ratios containing 5%, 15%, and 25% psm, respectively, over 12 weeks. the con ... | 2003 | 12893163 |
| in vivo antioxidant properties of vitamin e and chromium in cold-stressed japanese quails. | an experiment was conducted to determine if vitamin e (alpha-tocopherol-acetate) and chromium (chromium picolinate, cr pic) supplementation attenuate the negative effects of cold stress on egg production, egg quality, serum metabolites, and antioxidant status in japanese quails (corurnix coturnix japonica). one hundred and fifty laying japanese quails (50-day-old) were divided into five groups, 30 birds per group. the laying quails kept at 6 degrees c for 12 h/d (08.00 p.m. to 08.00 a.m.) were f ... | 2003 | 12903865 |
| developmental changes in gonadotropin-inhibitory hormone in the japanese quail (coturnix japonica) hypothalamo-hypophysial system. | we previously isolated a novel dodecapeptide containing a c-terminal -arg-phe-nh(2) sequence, sikpsaylplrf-nh(2) (rfamide peptide), from the japanese quail (coturnix japonica) brain. this novel quail peptide was shown to be located in neurons of the paraventricular nucleus (pvn) and their terminals in the median eminence (me), and to decrease gonadotropin release from cultured anterior pituitary in adult birds. we therefore designated this peptide gonadotropin-inhibitory hormone (gnih). furtherm ... | 2003 | 12904178 |
| behavioural investigation of polarisation sensitivity in the japanese quail (coturnix coturnix japonica) and the european starling (sturnus vulgaris). | many animals have sensitivity to the e-vector of linearly polarised light, which may assist in visually mediated behaviours such as navigation, signalling and foraging. however, it is still controversial as to whether birds possess polarisation sensitivity. several studies have found that altering the polarisation patterns of the broad visual field surrounding birds alters their intended migratory orientation. however, electrophysiological tests have failed to elicit evidence for polarisation se ... | 2003 | 12909701 |
| protective effect of modified glucomannans against aurofusarin-induced changes in quail egg and embryo. | the aim of this study was to evaluate effects of modified glucomannans (mycosorb) on egg yolk and liver of the day-old quail after aurofusarin inclusion in the maternal diet. fifty-four 45-day-old japanese quail were divided into three groups and were fed ad libitum a corn-soya diet balanced in all nutrients. the diet of the experimental quail was supplemented with aurofusarin at the level of 26.4 mg/kg feed in the form of fusarium graminearum culture enriched with aurofusarin or with aurofusari ... | 2003 | 12927908 |
| relaxant effects of parathyroid hormone and parathyroid hormone-related peptides on oviduct motility in birds and mammals: possible role of nitric oxide. | parathyroid hormone (pth) and pth-related peptides (pthrp) have previously been shown to modulate the contractile state of numerous types of smooth muscle. the effects of n-terminal pth and pthrp on spontaneous in vitro contractility of oviducal smooth muscle using tissues from egg-laying japanese quail (10-15 h post ovulation), 4 and 9 days pregnant mouse uterus were investigated. myometrial tissues from both species contracted vigorously for several hours, when incubated in organ baths in de j ... | 2003 | 12928013 |
| circadian clock genes and photoperiodism: comprehensive analysis of clock gene expression in the mediobasal hypothalamus, the suprachiasmatic nucleus, and the pineal gland of japanese quail under various light schedules. | in birds, the mediobasal hypothalamus (mbh) including the infundibular nucleus, inferior hypothalamic nucleus, and median eminence is considered to be an important center that controls the photoperiodic time measurement. here we show expression patterns of circadian clock genes in the mbh, putative suprachiasmatic nucleus (scn), and pineal gland, which constitute the circadian pacemaker under various light schedules. although expression patterns of clock genes were different between long and sho ... | 2003 | 12933643 |
| aflp linkage map of the japanese quail coturnix japonica. | the quail is a valuable farm and laboratory animal. yet molecular information about this species remains scarce. we present here the first genetic linkage map of the japanese quail. this comprehensive map is based solely on amplified fragment length polymorphism (aflp) markers. these markers were developed and genotyped in an f2 progeny from a cross between two lines of quail differing in stress reactivity. a total of 432 polymorphic aflp markers were detected with 24 taqi/ecori primer combinati ... | 2003 | 12939205 |
| zinc supplementation alleviates heat stress in laying japanese quail. | the study was conducted to determine whether zinc supplementation could alleviate the detrimental effects of high ambient temperature (34 degrees c) on egg production, digestibility of nutrients and antioxidant status in laying japanese quail. quail (n = 180; 52 d old) were divided into six groups (n = 30/group) and were fed a basal diet or the basal diet supplemented with 30 or 60 mg of zinc (znso(4). h(2)o)/kg diet. birds were kept at 22 degrees c and 58% relative humidity (rh). at 13 wk of ag ... | 2003 | 12949369 |
| specific innervation of aromatase neurons by substance p fibers in the dorsal horn of the spinal cord in quail. | the enzyme aromatase catalyzes the production of estrogens in the dorsal horn of the spinal cord where most of the nociceptive primary afferent fibers terminate. numerous estrogen receptors are present in this area and the control of spinal aromatase activity is thought to play an important role in the estrogenic control of nociception. the coexistence of aromatase and nociceptive terminals suggests a role for aromatase cells in pain-related processes, but whether terminals releasing nociceptive ... | 2003 | 12949789 |
| effect of beta-carotene supplementation on plasma and yolk igy levels induced by ndv vaccination in japanese quail. | newly hatched japanese quail (coturnix coturnix japonica) chicks were fed diets containing different levels of retinoids (vitamin a) or beta-carotene. group a received a commercial diet containing 10,000 iu vitamin a per kilogram. the diets of groups b, c, and d contained no vitamin a but were supplemented with 1-, 2.5-, and 5-fold retinol equivalents of beta-carotene. each group contained 16 quails in a 1:1 sex ratio. at 8 weeks of age the quails were immunized orally with newcastle disease vir ... | 2003 | 12951901 |
| the neuroendocrinology of reproductive behavior in japanese quail. | sex steroid hormones such as testosterone have widespread effects on brain physiology and function but one of their best characterized effects arguably involves the activation of male sexual behavior. during the past 20 years we have investigated the testosterone control of male sexual behavior in an avian species, the japanese quail (coturnix japonica). we briefly review here the main features and advantages of this species relating to the investigation of fundamental questions in the field of ... | 2003 | 12963100 |
| japanese quail (coturnix japonica) inseminations are more likely to fertilize eggs in a context predicting mating opportunities. | theoretical developments in behavioural ecology have generated increased interest in the proximate mechanisms underlying fertilization, but little is known about how fertilization success is regulated by cues from the external or social environment in males and females. here, we use a pavlovian conditioning paradigm to show that inseminations resulting from mating male and female japanese quail (coturnix japonica) are more likely to fertilize eggs when they occur in a context predicting that an ... | 2003 | 12964995 |
| the effect of endocrine disrupting chemicals on thyroid hormone binding to japanese quail transthyretin and thyroid hormone receptor. | we investigated the effect of endocrine disrupting chemicals (edcs), including medical, industrial, and agricultural chemicals, on 3,3',5-l-[125i]triiodothyronine ([125i]t3) binding to purified japanese quail transthyretin (qttr), a major thyroid hormone-binding protein in plasma, and to the ligand-binding domain of thyroid hormone receptor beta (qtr lbd). scatchard plots of t3 binding to qttr and qtr lbd revealed two classes of binding sites, with kd values of 6.9 and 185 nm, and a single class ... | 2003 | 13129501 |
| [the embryonal development of the japanese quail (coturnix coturnix japonica t. and s.)]. | 1961 | 13787591 | |
| [comparison of the distribution and caliber of the slow and rapid fibers of pectoral muscle in coturnix coturnix coturnix l. and in the semi-domestic subspecies coturnix coturnix japonica]. | 1961 | 13871578 | |
| [on the orientation of twin embryos obtained by cracking parallel to the presumptive non-incubated blastoderm axis of the quail egg (coturnix coturnix japonica)]. | 1963 | 13931844 | |
| micromelia in japanese quail. an embryonic lethal mutant. | 2007 | 14057869 | |
| focus formation by japanese quail cells infected with rous sarcoma virus. | 1963 | 14069826 | |
| egg production and fertility following various methods of insemination in japanese quail (coturnix coturnix japonica). | 1963 | 14073728 | |
| bone development in japanese quail. | 1963 | 14077645 | |
| [the dominant orientation of the embryo of the domestic quail (coturnix coturnix japonica) an von baer's rule]. | 1963 | 14091872 | |
| the postnatal development of bone of japanese quail. i. the cortex. anl-6769. | 1963 | 14130999 | |
| the postnatal development of bone of japanese quail. ii. the effect of estrogen. anl-6769. | 1963 | 14133477 | |
| the hypothalamic neurosecretory system of coturnix coturnix japonica. | 1964 | 14158189 | |
| estrogen-induced intramedullary bone formation in japanese quail (coturnix coturnix japonica). | 1964 | 14183211 | |
| use of japanese quail for the study of zinc deficiency. | 1964 | 14189110 | |
| [action of stilbestrol on the mueller's ducts of the quail embryo (coturnix coturnix japonica)]. | 1964 | 14190524 | |
| sex-linked albinism in the japanese quail. | from a single white coturnix chick hatched in august 1963, a white colony has been developed. the results of breeding experiments are consistent with the view that the albinism is sex-linked and recessive. it appears likely that the mutation occurred in the first white female hatched, or her sire. | 1964 | 14199723 |
| active immunity induced and spermatogenesis suppressed by testicular antigen in the male japanese quail (coturnix coturnix japonica). | 1964 | 14216661 | |
| [the domestic quail (coturnix coturnix japonica). ovaluation and study of the egg at the non-incubated stage]. | 1964 | 14250466 | |
| [orientation of embryos obtained by fissuration perpendicular to the presumed axis of the quail egg (coturnix coturnix japonica)]. | 1964 | 14250562 | |
| effects of zinc deficiency on plasma proteins of young japanese quail. | 1965 | 14291688 | |
| toxicological evaluations of agricultural chemicals with japanese quail (coturnix coturnix japonica). | 1965 | 14319533 | |
| a triorchid japanese quail. | 1965 | 14336908 | |
| a procedure for artificial insemination of japanese quail. | 1965 | 14343991 | |
| marek's disease, candidiasis and megabacteriosis in a flock of chickens (gallus gallus domesticus) and japanese quail (coturnix japonica). | an outbreak of mortality in chickens and japanese quail sharing the same airspace was investigated. marek's disease was diagnosed in five of 11 chickens examined, and in 20 of 24 quail; crop candidiasis was found in four of the chickens and in five of the quail, and moderate to large numbers of organisms referred to as megabacteria were observed in eight of the chickens and 16 of the quail. the disease was so severe that almost all of the quail in the flock died or were culled during the followi ... | 2003 | 14509575 |
| changes in hydrogen isotope ratios in sequential plumage stages: an implication for the creation of isotope-base maps for tracking migratory birds. | accurate reference maps are important in the use of stable-isotopes to track the movements of migratory birds. reference maps created by the analysis of samples collected from young at the nest site are more accurate than simply referring to naturally occurring patterns of hydrogen isotope ratios created by precipitation cycles. ratios of hydrogen isotopes in the nutrients incorporated early in the development of young birds can be derived from endogenous, maternal sources. base-maps should be c ... | 2003 | 14521279 |
| avian host range of chlamydophila spp. based on isolation, antigen detection and serology. | published reports and our own diagnostic data on the avian host range of avian chlamydophila spp. are presented in an attempt to provide evidence for the large number of bird species that have been naturally infected with chlamydia. the term 'chlamydia-positive' is based on either isolation of the organism and antigen detection or on serological detection of circulating antibodies. the list of chlamydia-positive birds contains the six major domestic species (chicken, turkey, pekin duck, muscovy ... | 2003 | 14522700 |
| use of a japanese quail fibrosarcoma cell line (qt-35) in serologic assays to determine the antigenic relationship of avian metapneumoviruses. | the ability of a japanese quail fibrosarcoma cell line (qt-35) to support the replication of avian metapneumoviruses belonging to the 3 subgroups a (14/1 virus), b (colorado virus), and c (hungary virus) enabled the development of assays for the detection and evaluation of virus-specific antibodies. on the basis of the results of enzyme-linked immunosorbent assay (elisa), plaque reduction neutralization assay (prna), immunofluorescent assay (ifa), and western blot analysis, some degree of antige ... | 2003 | 14535544 |
| capillarization and vascular endothelial growth factor expression in hypertrophying anterior latissimus dorsi muscle of the japanese quail. | hypertrophy may increase the diffusion distances from capillaries to the interior of the muscle fibers. we hypothesized that capillary proliferation occurs during hypertrophy, which is accompanied by an up-regulation of vascular endothelial growth factor (vegf). hypertrophy of the left anterior latissimus dorsi muscle of japanese quail (2-3 months old) was induced by 1-4 week stretch-overload. capillarization was analyzed in cross-sections stained for atpase. vegf expression was determined with ... | 2003 | 14562754 |
| clinical, gross, and microscopic findings in different avian species naturally infected during the h7n1 low- and high-pathogenicity avian influenza epidemics in italy during 1999 and 2000. | from the end of march to the beginning of december 1999, an epidemic of low-pathogenicity avian influenza (lpai), caused by a h7n1 type a influenza virus, affected the intensively reared poultry population of northeastern italy. a total of 199 flocks were diagnosed with influenza infection. the highest number affected flocks were in meat turkeys (164), with only a limited number of turkey breeder, chicken (breeders, broilers, and table egg layers), and guinea fowl flocks infected. following the ... | 2003 | 14575075 |
| land-based birds as potential disseminators of avian mammalian reassortant influenza a viruses. | chickens, quail, and other land-based birds are extensively farmed around the world. they have been recently implicated in zoonotic outbreaks of avian influenza in hong kong. the possibility that land-based birds could act as mixing vessels or disseminators of avian/mammalian reassortant influenza a viruses with pandemic potential has not been evaluated. in this report, we investigated whether chickens and japanese quail are susceptible to a mammalian influenza virus (a/swine/texas/4199-2/98 [h3 ... | 2003 | 14575124 |
| alterations in aortic antioxidant components in an experimental model of atherosclerosis: a time-course study. | antioxidant component alterations in the aorta during atherogenesis were examined in atherosclerosis-susceptible (sus) japanese quail fed a cholesterol-supplemented (0.5% w/w) diet. birds fed a non-supplemented diet provided information on the effects of aging on endogenous antioxidants. one hundred adult sus males were used. birds were sacrificed after 0, 4, 8 and 12 weeks on the diets and were examined for plaque development and corresponding antioxidant component alterations in aorta and myoc ... | 2003 | 14577593 |
| heme oxygenase and antioxidant status in cultured aortic endothelial cells isolated from atherosclerosis-susceptible and -resistant japanese quail. | we have investigated heme oxygenase (ho) and antioxidant status in the novel isolation and characterization of aortic endothelial cells (aecs) from a random bred wild-type strain (wild) and selectively bred atherosclerosis-susceptible (sus) and -resistant (res) strains of japanese quail. cultured aecs expressed acetylated ldl, and were probed with endothelial and smooth muscle cell specific antibodies to confirm purity of culture. subconfluent monolayers of res aecs had higher ho activity than s ... | 2003 | 14577600 |
| distribution of interleukin-1 receptor in chicken and quail brain. | interleukin 1 isoforms (il-1) are major regulators of vertebrate immune responses. in the mammalian cns, this function is reflected in physiological and anatomical evidence implicating il-1 in a suite of behaviors associated with sickness. although birds show sickness behavior, a parallel role of il-1 in birds has not been investigated. as proinflammatory effects of il-1 are mediated via the il-1 type i receptor (il-1ri), we investigated the distribution of il-1ri protein and mrna after lipopoly ... | 2003 | 14613794 |
| light-induced hormone conversion of t4 to t3 regulates photoperiodic response of gonads in birds. | reproduction of many temperate zone birds is under photoperiodic control. the japanese quail is an excellent model for studying the mechanism of photoperiodic time measurement because of its distinct and marked response to changing photoperiods. studies on this animal have suggested that the mediobasal hypothalamus (mbh) is an important centre controlling photoperiodic time measurement. here we report that expression in the mbh of the gene encoding type 2 iodothyronine deiodinase (dio2), which c ... | 2003 | 14614506 |
| the bh (black at hatch) gene that causes abnormal feather pigmentation maps to chromosome 1 of the japanese quail. | japanese quail embryos normally have longitudinal black and brown stripes formed by colored feather buds on their back whereas an autosomal dominant mutation, black at hatch (bh), disrupts this pigmentation pattern by causing overall black and brown coating in heterozygotes and homozygotes, respectively. these phenotypes of the bh mutant embryos suggest that the bh locus plays an important role in the pigment pattern formation of plumage, but its genetic origin, including cloning of the responsi ... | 2003 | 14629723 |
| adaptability of japanese quail chicks to conditions of simulated weightlessness. | the objective of this study was to evaluate the adaptability of young japanese quail chicks to the simulated weightlessness, represented by hypodynamy. unsexed hatchlings were subjected to hypodynamy on either the first, second or third day of age and reared under these conditions to 21 days of age. during this period, the control quail chicks were housed in a floor box. the effect of hypodynamy on adaptability of chicks was significant (p < 0.001). approximately 75% of all chicks exposed to hyp ... | 2003 | 14631942 |
| effects of oxidant-induced injury on heme oxygenase and glutathione in cultured aortic endothelial cells from atherosclerosis-susceptible and -resistant japanese quail. | recent studies on cultured aortic endothelial cells (aecs) from atherosclerosis-susceptible (sus) and -resistant (res) strains of japanese quail suggest that differences in atherosclerosis susceptibility between res and sus may be due to differences in endothelial heme oxygenase (ho) and antioxidant components. we have now investigated the effects of oxidant-induced injury on ho and glutathione (gsh) in aecs from sus and res quail. we report that cultured aecs from sus and res birds differ in th ... | 2003 | 14674683 |
| photoinducible phase-specific light induction of cry1 gene in the pars tuberalis of japanese quail. | prolactin (prl) secretion is regulated by photoperiod in mammals and birds. in mammals, the pars tuberalis (pt) in the pituitary is involved in the regulation of photoperiodic regulation of prl secretion. in birds, however, hypothalamic vasoactive intestinal peptide is implicated in prl secretion, and physiological roles of the avian pt remain unknown. in the present study, we show that prl secretion increases under long days and short days with a night interruptive schedule, both of which also ... | 2004 | 14684603 |
| effects of two-locus combinations, using the roux, lavender, and beige mutations, on plumage color of japanese quail. | the interactions between the effects of three plumage color mutations taken two-by-two (sex-linked recessive roux, autosomal recessive lavender, and autosomal dominant beige) were studied in japanese quail by producing a total of 121 f(1) and 1118 f(2) quail from the three pure stocks. three new plumage colors were obtained in f(2) quail: roux-diluted beige, cream, and lavender-diluted beige. two of them, roux-diluted beige (from the roux and beige mutations) and cream (from the roux and lavende ... | 2003 | 14691319 |
| transition from embryonic to adult transcription pattern of serotonin n-acetyltransferase gene in avian pineal gland. | the study reports the change of transcription pattern of serotonin n-acetyltransferase gene and melatonin receptor genes during ontogenesis of the avian pineal gland. the rt-pcr technique was used to investigate the expression of the arylalkylamine n-acetyltransferase (aa-nat) and melatonin receptor genes during development of the pineal glands isolated from japanese quail (coturnix coturnix japonica) embryos incubated from 3 days on until hatching (17 days), and in some organs (pineal, brain he ... | 2004 | 14694429 |
| differential effects of testosterone on protein synthesis activity in male and female quail brain. | in japanese quail, testosterone (t) increases the nissl staining density in the medial preoptic nucleus (pom) in relation to the differential activation by t of copulatory behavior. the effect of t on protein synthesis was quantified here in 97 discrete brain regions by the in vivo autoradiographic (14)c-leucine (leu) incorporation method in adult gonadectomized male and female quail that had been treated for 4 weeks with t or left without hormone. t activated male sexual behaviors in males but ... | 2004 | 14706777 |
| melatonin supplementation can ameliorate the detrimental effects of heat stress on performance and carcass traits of japanese quail. | melatonin, the major pineal hormone, modulates growth in poultry by influencing hormones involved in growth. we investigated the effects of dietary melatonin supplementation on performance, carcass characteristics, and excretion of nitrogen and some minerals in broiler japanese quails (coturnix coturnix japonica) exposed to high-ambient-temperature stress (34 degrees c). one hundred twenty japanese quails (10 d old) were randomly assigned to 4 treatment groups, 3 replicates of 10 birds each. the ... | 2003 | 14716096 |
| vitamin e and selenium supplementation to alleviate cold-stress-associated deterioration in egg quality and egg yolk mineral concentrations of japanese quails. | the effects of vitamin e (dl-alpha-tocopheryl acetate) and selenium (se; na2-seo3) on egg production, egg quality, and mineral content of egg yolk in japanese quails reared under a low ambient temperature (6 degrees c) were evaluated. birds (n=300; 7 wk old) were randomly assigned to 12 treatment groups, 25 birds per group. the birds in a 3 x 2 factorial design received either three levels of vitamin e (125, 250, and 500 mg/kg diet) or two levels of selenium (0.1 or 0.2 mg/kg diet). after 2 wk o ... | 2003 | 14716097 |
| relation between tonic immobility and production estimated by factorial correspondence analysis in japanese quail. | duration of tonic immobility (ti) is a well-established criterion of fearfulness in birds, but its relation to production traits has been little studied. ti and 27 variables related to egg production and quality, feed consumption, and body condition were collected for 355 female japanese quail. experimental birds were the f2 generation from a reciprocal cross between a line selected for long ti and a line from a different origin and selected for early egg production. ti and several other variabl ... | 2003 | 14717540 |
| relative contributions of the male and the female to sexual behavior and reproductive success in the japanese quail (coturnix japonica). | two contrasting investigative techniques provided evidence consistent with the interpretation that female quail (coturnix japonica) regulate male copulatory behavior by the duration of their immobility and through this behavioral mechanism they also control the rate of fertilization of their eggs. in experiment 1, copulation tests with males and females from different genetic lines showed that the type of female that participated in a copulatory test significantly influenced the latency of the m ... | 2003 | 14717640 |
| maternal corticosterone is transferred to avian yolk and may alter offspring growth and adult phenotype. | many environmental perturbations may elevate plasma corticosterone in laying birds, including disease, poor body condition, high predator density, anthropogenic disturbance, and/or food scarcity. when adverse conditions are not dire enough to dictate foregoing reproduction, maternal corticosterone in egg yolk may phenotypically engineer offspring so as to maximize success under the constraints of the local environment. we tested the hypotheses that corticosterone in avian egg yolk should correla ... | 2004 | 14723888 |
| photoperiodic regulation of type 2 deiodinase gene in djungarian hamster: possible homologies between avian and mammalian photoperiodic regulation of reproduction. | the molecular mechanisms responsible for seasonal time measurement have yet to be fully described. recently, we used differential analysis to identify that the type 2 iodothyronine deiodinase (dio2) gene is responsible for the photoperiodic response of gonads in japanese quail. it was found that expression of dio2 in the mediobasal hypothalamus is induced by light and that t(3) content in the mediobasal hypothalamus increased under long day conditions. in addition, we showed that intracerebroven ... | 2004 | 14726436 |
| genetic similarity and relationships of dna fingerprints with performance and with heterosis in japanese quail lines from two origins and under reciprocal recurrent or within-line selection for early egg production. | dna fingerprints of japanese quail male and female pure line breeders were obtained with probes 33.6, 33.15, and r18.1 and they yielded a total of 59 scoreable bands. bandsharing (0<bs<1) was calculated within and between six quail lines of two origins, and under reciprocal recurrent (aa and bb), within-line (dd and ee) or no (pp and ff) selection. twenty one pair types were compared. bs was 0.30 higher within line than between lines. bs with the control line was smaller for reciprocal recurrent ... | 2009 | 14736393 |
| daily organization of laying in japanese and european quail: effect of domestication. | in the present study, we aimed to examine the possible effects of domestication on the daily organization of laying in female quail. to achieve this we compared laying patterns in a laboratory strain of japanese quail with those in european quail originating from a wild population. under ld 14:10, the same specific laying window was observed, with ovipositions occurring mainly between 7 h and 15 h after lights on. thus, domestication did not modify the specific daily organization of laying in fe ... | 2004 | 14743518 |
| distribution of corticotropin-releasing factor-immunoreactive neurons in the central nervous system of the domestic chicken and japanese quail. | in birds, as in mammals, corticotropin-releasing factor (crf) is present in a number of extrahypothalamic brain regions, indicating that crf may play a role in physiological and behavioral responses other than the control of adrenocorticotropin hormone release by the pituitary. to provide a foundation for investigation of the roles of crf in the control of avian behavior, the distribution of crf immunoreactivity was determined throughout the central nervous system of the domestic chicken (gallus ... | 2004 | 14755536 |
| morphometry of otoconia in the utricle and saccule of developing japanese quail. | the development of otoconia in the utricular and saccular maculae from initial embryonic formation to adult stages was examined in japanese quails. both the morphology and size of the otoconia were quantified at different developmental stages. it was observed that the otoconia were initially formed on embryologic stage e5 in the saccule and e6 in the utricle. otolith mass areas increased in a sigmoidal growth pattern, with saccular otolith areas being smaller than the utricular mass areas. saccu ... | 2004 | 14759573 |
| [peculiarities of eye morphogenesis in embryonic japanese quails developed in microgravity]. | this work is a part of comprehensive research into the effects of space flight on japanese quail ontogenesis. analysis of eye morphogenesis in the embryonic japanese quails developed in microgravity discovered considerable deviations and abnormalities. ocular abnormalities in the embryonic quail were mainly micro-ophthalmic and associated with disproportional growth of the pigmental epithelium and neural retina which resulted in plication and a broken sandwich structure of the retina. | 2003 | 14959621 |
| ultrastructural study of spermiogenesis in the turkey, meleagris gallopavo. | 1. ultrastructural changes that take place in the spermatids of the turkey were studied. twelve steps of spermiogenesis are described. 2. acrosomal formation is similar to that in the domestic fowl and quail. the perforatorium develops as a dense granule in a tubular invagination of the thickened part of the nuclear membrane during the acrosomal phase of spermatid development. 3. patchy appearances of the circular (cm) and longitudinal (lm) manchette occur concurrently for a very brief period be ... | 2003 | 14965087 |
| chromosome homology between chicken (gallus gallus domesticus) and the red-legged partridge (alectoris rufa); evidence of the occurrence of a neocentromere during evolution. | chromosome-specific paints from macrochromosomes 1-9 and z of the chicken were hybridised to metaphases of the red-legged partridge and revealed no inter-chromosomal rearrangements. the results from chromosome painting are similar to previous studies on the japanese quail but different from findings in guinea fowl and several species of pheasant. the difference in centromere position in chicken and partridge chromosome 4, previously assumed to be the result of an inversion, was confirmed. howeve ... | 2003 | 14970724 |
| effectiveness of twenty, twenty-five diazacholesterol, avian gonadotropin-releasing hormone, and chicken riboflavin carrier protein for inhibiting reproduction in coturnix quail. | contraception may provide a useful nonlethal management tool when it is desirable to reduce populations of birds. we tested the efficacy of 20,25 diazacholesterol, and immunization with avian gonadotropin-releasing hormone (agnrh-i) and chicken riboflavin carrier protein (crcp) as contraceptives and investigated their modes of action in coturnix quail (coturnix coturnix japonica). females that were paired with males treated with 20,25 diazacholesterol produced lower percentages of eggs that were ... | 2004 | 14979575 |
| aromatase (estrogen synthase) activity in the dorsal horn of the spinal cord: functional implications. | the presence of aromatase (estrogen synthase) in neurons in the dorsal horn of the spinal cord in japanese quail suggests that estrogens produced locally from androgens could control spinal sensory processes including nociception. we used the hot water nociceptive test (54 degrees c) to appraise the long-term effect of an inhibition of aromatization on the foot withdrawal latency in male quail. four weeks after the ablation of their main source of testosterone (testes), castrated males displayed ... | 2003 | 14993059 |
| experimental aspergillus fumigatus infection in quails and results of treatment with itraconazole. | this study was performed to investigate (i). the clinical, histopathological and biochemical changes in quails (coturnix coturnix japonica) with experimentally induced aspergillosis; and (ii). the efficiency of itraconazole treatment on these infected birds. a total of 18021-day-old male quails was randomly divided into three groups (control, infected untreated and infected treated), each containing 60. the experimental infection was set by intratracheal inoculation of 0.2 ml inoculum of aspergi ... | 2004 | 14995975 |
| sequential pathology of experimental aflatoxicosis in quail and the effect of selenium supplementation in modifying the disease process. | feeding of aflatoxin b1 @ 1 ppm to 2-week old japanese quail for a period of 8 weeks produced gross and microscopic changes in the liver, skeletal muscles, heart and bursa of fabricius. these included fatty changes, bile duct hyperplasia and lymphoid aggregation in liver; haemorrhages in thigh, breast muscles and myocardium; mild depletion of lymphocytes, cystic degeneration and fibrous tissue proliferation in bursa of fabricius. more or less similar lesions were seen in quail chicks fed on afla ... | 2004 | 15008352 |
| transgene expression in hypertrophied and aged skeletal muscle in vivo by lentivirus delivery. | human immunodeficiency virus type 1 (hiv-1)-based lentiviral vectors can infect dividing and non-dividing cells. the purpose of this study was to investigate the efficacy of lentiviral transfer of the green fluorescent protein (egfp) gene into post-mitotic quail skeletal muscle and into fibers undergoing hypertrophy and hyperplasia via addition of satellite cell nuclei. | 2004 | 15026989 |
| 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 |
| circadian expression of clock gene in the optic tectum of japanese quail. | the physiological activity of avian optic tectum (teo) is known to be regulated by the circadian system. in a previous study, we found clock gene expression in the teo of japanese quail. here we report rhythmic expression of the per2 gene in the stratum griseum et fibrosum (sgf) of the teo under a light--dark (ld) cycle, constant darkness (dd), and constant light (ll) conditions. however, light pulse did not affect per2 expression in the teo. these results suggest that light stimulus and melaton ... | 2004 | 15044078 |
| aromatization of androgens into estrogens reduces response latency to a noxious thermal stimulus in male quail. | we recently demonstrated the presence of estrogen synthase (aromatase) and of estrogen receptors in the dorsal horn (laminae i-ii) throughout the rostrocaudal extent of the spinal cord in male and female japanese quail. the spinal laminae i-ii receive and process abundant sensory information elicited, among others, by acute noxious stimulation of the skin and resulting in rapid, reflex-like withdrawal behavior. in the present study, we demonstrate that systemic treatment with estradiol or testos ... | 2004 | 15047013 |
| 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 |
| assessment of a caudal external thoracic artery axial pattern flap for treatment of sternal cutaneous wounds in birds. | to assess the use of a caudal external thoracic artery axial pattern flap to treat sternal cutaneous wounds in birds. | 2004 | 15077694 |
| effects of dose and glycosylation on the transfer of genistein into the eggs of the japanese quail (coturnix japonica). | soy isoflavones have been associated with several beneficial effects of soy in human diets. however, most soy is consumed by livestock in the western countries. it is possible that isoflavones could be transferred and/or accumulated into animal products, which could become additional sources of dietary isoflavones for humans. our objectives were to determine whether dietary isoflavone genistein could be transferred and/or accumulated into the eggs of japanese quail (coturnix japonica) and how th ... | 2004 | 15080653 |
| do pcbs cause eggshell thinning? | the evidence that pcbs are involved in eggshell thinning is examined. in experiments in which both pcbs and dde were used, it was found that dde, but not pcbs, caused eggshell thinning of mallard and american kestrel. for two other species, bobwhite and japanese quail, no thinning was observed with either agent. numerous other studies with dde alone have demonstrated that this agent can cause eggshell thinning in many, but not all, species. it is concluded that dde is the only compound that has ... | 1996 | 15091460 |
| immunocytochemical localization of aromatase in sensory and integrating nuclei of the hindbrain in japanese quail (coturnix japonica). | the distribution of the estrogen synthesizing enzyme (aromatase) in the hindbrain (rhombencephalon and mesencephalon) of male adult quail was investigated by immunocytochemistry. aromatase-immunoreactive neuronal structures (perikarya and fibers bearing punctate structures) were observed in sensory (trigeminal, solitary tract, vestibular, optic tectum) and integrating (parabrachial, periaqueductal, cerulean, raphe) nuclei. besides the expression of aromatase in these well-delineated nuclei, dens ... | 2004 | 15101089 |
| 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 |
| 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 |
| variation in temperature increases the cost of living in birds. | the effect of temperature variability on laying birds was studied experimentally, using japanese quail. two aspects of temperature variability were investigated: the effects of regular daily variation in temperature, and of a sudden change in temperature. both of these may become more common as a consequence of climate change. these manipulations were carried out at two levels of food supply. energy expenditure increased with higher daily temperature variation, and also after a sudden change in ... | 2004 | 15143140 |
| a first-generation microsatellite linkage map of the japanese quail. | a linkage map of the japanese quail (coturnix japonica) genome was constructed based upon segregation analysis of 72 microsatellite loci in 433 f(2) progeny of 10 half-sib families obtained from a cross between two quail lines of different genetic origins. one line was selected for long duration of tonic immobility, a behavioural trait related to fearfulness, while the other was selected based on early egg production. fifty-eight of the markers were resolved into 12 autosomal linkage groups and ... | 2004 | 15147390 |
| influences of social learning on mate-choice decisions. | evidence from both field and laboratory is consistent with the hypothesis that animals can acquire mate preferences by observing the mating behavior of others. it is difficult, however, to distinguish social learning about mates from a host of other social effects on mating that do not produce changes in preferences. examples are drawn from laboratory studies on mate choice in female and male japanese quail that illustrate ways in which social cues influence mating decisions. quail of both sexes ... | 2004 | 15161145 |
| 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 |
| seasonal morphological changes in the neuro-glial interaction between gonadotropin-releasing hormone nerve terminals and glial endfeet in japanese quail. | in a previous study we showed that photoperiodically generated t3 in the hypothalamus is critical for the photoperiodic response of gonads in japanese quail. the expression of thyroid hormone receptors in the median eminence (me) suggested that photoperiodically generated t3 acts on the me. because thyroid hormone is known to play a critical role in the development and plasticity of the central nervous system, in the present study we have examined ultrastructure of the me in japanese quail kept ... | 2004 | 15178649 |
| molecular and functional characterization of a vasotocin-sensitive aquaporin water channel in quail kidney. | both mammals and birds can concentrate urine hyperosmotic to plasma via a countercurrent multiplier mechanism, although evolutionary lines leading to mammals and birds diverged at an early stage of tetrapod evolution. we reported earlier (nishimura h, koseki c, and patel tb. am j physiol regul integr comp physiol 271: r1535-r1543, 1996) that arginine vasotocin (avt; avian antidiuretic hormone) increases diffusional water permeability in the isolated, perfused medullary collecting duct (cd) of th ... | 2004 | 15205186 |
| photoperiod-induced changes in cloacal gland physiology and testes weight in male japanese quail selected for divergent adrenocortical responsiveness. | in quail, activation of the hypothalamic-pituitary-adrenal axis has been linked to depression in the hypothalamic-pituitary-testicular axis, and cloacal gland development and foam production are known to be androgen dependent. therefore, photoperiod manipulations that induce gonadal growth (long day) and involution (short day) were used to examine changes in cloacal gland physiology in male quail from lines selected for a reduced (low stress, ls) or exaggerated (high stress, hs) plasma corticost ... | 2004 | 15206629 |
| cloacal gland and testes development in male japanese quail selected for divergent adrenocortical responsiveness. | the time course of sexual development in male quail from lines selected for either a reduced (low stress, ls) or an exaggerated (high stress, hs) plasma corticosterone response to brief restraint was determined. sexual development was assessed by examination of cloacal gland area (carea) and volume (cvol), proportion of individuals that produced cloacal gland foam, and the intensity of cloacal gland foam production (cfp) at 4, 5, 6, 8, 10, 14, and 16 wk of age. these intervals encompass ages dur ... | 2004 | 15206632 |
| two-step consumption of yolk granules during the development of quail embryos. | the mechanism of yolk consumption was studied morphologically and biochemically in japanese quail coturnix japonica. the amount of yolk granules in the yolk (or 'yolk cell') decreased in two steps during embryonic development. in the first step, during days 0-4 of incubation, the yolk-granule weight decreased at a rate of 13 mg/day. this decrease was due to segregation by endodermal cells that were newly formed in the developing yolk sac. in the second step after day 6, the decrease was drastic ... | 2004 | 15206954 |
| immediate early gene expression associated with induction of brooding behavior in japanese quail. | certain species can be induced to foster infant or neonatal animals through the process of sensitization. we induced brooding behavior in adult japanese quail through repeated exposure to foster chicks across five 20-min trials. brooding behavior was characterized by a bird allowing chicks to approach and remain underneath its wings while assuming a distinctive stationary crouching posture, preening, and feather fluffing. birds who did not show brooding behavior actively avoided chicks. among th ... | 2004 | 15215038 |
| 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 |
| a comparative karyological study of the blue-breasted quail (coturnix chinensis, phasianidae) and california quail (callipepla californica, odontophoridae). | we conducted comparative chromosome painting and chromosome mapping with chicken dna probes against the blue-breasted quail (coturnix chinensis, cch) and california quail (callipepla californica, cca), which are classified into the old world quail and the new world quail, respectively. each chicken probe of chromosomes 1-9 and z painted a pair of chromosomes in the blue-breasted quail. in california quail, chicken chromosome 2 probe painted chromosomes 3 and 6, and chicken chromosome 4 probe pai ... | 2004 | 15218246 |