Publications

health status and potential uptake of transgenic dna by japanese quail fed diets containing genetically modified plant ingredients over 10 generations.	the hypothesis assumes that feed containing gmos affects animal health and results in the transgene product accumulating in the body. therefore, the objective of the study was to evaluate the impact of genetically modified (gm) ingredients used in poultry diets on aspects of bird health status and accumulation of transgenic dna in eggs, breast muscle and internal organs. a total of 10 generations of japanese quail were fed three types of diets: group a - containing gm soya (roundup ready) and no ...	2016	27095142
knee joint morphogenesis of the quail (coturnix japonica) embryo.	knee joint development and its morphogenetic events have been studied in human, chicken and other animal models and differences have been found in the pattern of the knee joint morphogenesis among the studied species. according to the small number of studies which have focused on the chronology of knee morphogenesis, a "morphogenetic timely pattern" is hard to suggest. quail is an animal model for which there is no information about knee joint morphogenesis. this study was planned to define the ...	2015	27086443
another way to win: learning and intrasexual competition in japanese quail (coturnix japonica).	two experiments were designed to test whether learning affects the opportunity to obtain cloacal contact with female sexual partners during male-male contests in japanese quail (coturnix japonica). the aim of experiment 1 was to evaluate the relationship between competitive status and efficiency of access to cloacal contact. six groups of 3 males each were observed for 40 days. observed males established stable dominance relationships in which winner status positively correlated with copulatory ...	2016	27078074
effects of medium-chain fatty acids on performance, carcass characteristics, blood biochemical parameters and immune response in japanese quail.	this study had the aim of evaluating the effects of medium-chain fatty acids (mcfa) on performance, carcass characteristics, some blood parameters and antibody titre against sheep red blood cells (srbc) in quail. a total of 240 quail chicks were allotted to 4 treatments consisting of respectively 0, 1, 2 and 4 g/kg dietary mcfa. there were no significant differences in body weight, feed intake and feed conversion ratio among treatments at different stages of the experiment. mcfas had no signific ...	2016	27074264
c-terminal amino acids 471-507 of avian hepatitis e virus capsid protein are crucial for binding to avian and human cells.	the infection of chickens with avian hepatitis e virus (avian hev) can be asymptomatic or induces clinical signs characterized by increased mortality and decreased egg production in adult birds. due to the lack of an efficient cell culture system for avian hev, the interaction between virus and host cells is still barely understood. in this study, four truncated avian hev capsid proteins (orf2-1 - orf2-4) with an identical 338aa deletion at the n-terminus and gradual deletions from 0, 42, 99 and ...	2016	27073893
effect of aloe vera and clove powder supplementation on carcass characteristics, composition and serum enzymes of japanese quails.	the aim was to study the effect of aloe vera and clove powder supplementation on carcass characteristics, composition and serum enzymes of japanese quails.	2015	27047153
single nucleotide polymorphism mining and nucleotide sequence analysis of mx1 gene in exonic regions of japanese quail.	an attempt has been made to study the myxovirus resistant (mx1) gene polymorphism in japanese quail.	2015	27047057
chemical composition of solar dried blood and the ruminal content and its effect on performance of japanese quails.	the aim was to determine the chemical composition of solar dried blood and rumen content (dbrc) and further ascertain the concentration at which dbrc could be included in japanese quail diets without any adverse effect on its performance.	2015	27047002
mild heat stress enhances differentiation and proliferation of japanese quail myoblasts and enhances slow muscle fiber characteristics.	the objective of this study was to investigate the effect of mild heat stress on muscle fiber hyperplastic and hypertrophic growth in quail primary myogenic cells to better understand the mechanisms leading to increased skeletal muscle development in avian embryos incubated at a higher temperature. compared to control cultures maintained at 37°c, incubation at 39°c enhanced myotube length (p < 0.01) and diameter (p < 0.001) at 3 days after differentiation (d3). this enlargement of the myotubes i ...	2016	27038421
change of ultraviolet light transmittance in growing chicken and quail eyes.	the ocular media transmittance (omt), the amount of light transmitted by the ocular media (the cornea, aqueous humour, lens and vitreous humour) to the retina, determines the sensitivity of vertebrate eyes to short-wavelength light, such as ultraviolet (uv). earlier, we have measured the omt of adult birds from a range of species and found that smaller eyes transmitted more uv-light to the retina than larger eyes. in the current study we measured omt during post-hatch development in japanese qua ...	2016	27025934
primary endodermal epithelial cell culture from the yolk sac membrane of japanese quail embryos.	we established an endodermal epithelial cell culture model (eec) for studying the function of certain enzymes and proteins in mediating nutrient utilization by avian embryos during development. fertilized japanese quail eggs were incubated at 37 °c for 5 days and then yolk sac membranes (ysm) were collected to establish the eec culture system. we isolated the embryonic endoderm layer from ysm, and sliced the membrane into 2 - 3 mm pieces and partially digested with collagenase before seeding in ...	2016	27022687
pre- and post-natal stress programming: developmental exposure to glucocorticoids causes long-term brain-region specific changes to transcriptome in the precocial japanese quail.	exposure to stress during early development can permanently influence an individual's physiology and behaviour, and affect its subsequent health. the extent to which elevated glucocorticoids cause such long-term 'programming' remains largely untested. in the present study, using the japanese quail as our study species, we independently manipulated exposure to corticosterone during pre- and/or post-natal development and investigated the subsequent effects on global gene expression profiles within ...	2016	26999292
overexpression of g0/g1 switch gene 2 in adipose tissue of transgenic quail inhibits lipolysis associated with egg laying.	in avians, yolk synthesis is regulated by incorporation of portomicrons from the diet, transport of lipoproteins from the liver, and release of lipids from adipose tissue; however, the extent to which lipolysis in adipose tissue contributes to yolk synthesis and egg production has yet to be elucidated. g0/g1 switch gene 2 (g0s2) is known to bind and inhibit adipose triglyceride lipase (atgl), the rate-limiting enzyme in lipolysis. the objective of this study was to determine whether overexpressi ...	2016	26999108
p and ca requirements for japanese quail.	four experiments were conducted to estimate the phosphorus and calcium requirements for weight maintenance and weight gain in japanese quails during their growth phase from 16 to 36 days. japanese quails aged 16 days were used for estimating the phosphorous and calcium requirements for weight maintenance or weight gain, with these quails composing each reference slaughter group and the others distributed in a completely randomized design, housed in cages of galvanized wire (33 × 33 × 16 cm) that ...	2017	26991051
female japanese quail with high levels of estradiol demonstrate cocaine-induced conditioned place preference.	preclinical research has indicated that females may be more sensitive to the rewarding properties of cocaine. however, the majority of this research has been done in rodent species. environmental cues associated with human drug-taking behavior tend to be visual. because rodents do not rely on the visual system as their primary sense modality, the use of a visually oriented species may add to our understanding of cue-elicited drug cravings and relapse. the present study examined the potential rol ...	2016	26963687
in search of genetic constraints limiting the evolution of egg size: direct and correlated responses to artificial selection on a prenatal maternal effector.	maternal effects are an important force in nature, but the evolutionary dynamics of the traits that cause them are not well understood. egg size is known to be a key mediator of prenatal maternal effects with an established genetic basis. in contrast to theoretical expectations for fitness-related traits, there is a large amount of additive genetic variation in egg size observed in natural populations. one possible mechanism for the maintenance of this variation is through genetic constraints ca ...	2016	26956564
effect of different light sources on reproductive anatomy and physiology of japanese quail (coturnix coturnix japonica).	artificial lights are essential for controlling the reproductive tract development of birds during puberty and therefore influence reproductive quality. the aim of this study was to evaluate the effect of different light sources on reproductive anatomic and physiological characteristics of female japanese quail (coturnix coturnix japonica). a total of 270 birds from one day of age were housed in a masonry shed divided into six rooms with light isolation. each room was equipped with a different t ...	2016	26949140
lipidomic modulation in stressed albino rats is altered by yolk and albumen of quail (coturnix japonica) egg and poultry feed.	cold and immobilization stressors can generate oxidative stress as well as skeletal muscle fatigue. free radicals cause oxidative degradation of lipids, proteins, nucleic acids, and carbohydrates molecules, thereby compromising cell integrity and function. quail egg had been described as being very functional biochemically, due to the essential biomolecules it contains in very regulated quantity. this study was aimed for evaluating the dietary effect of the egg on lipid profile parameters on sel ...	2016	26942009
histomorphometric study of brachiocephalic artery of japanese quail.	brachiocephalic arteries in quails are large arteries which are arising separately from the aortic arch. the aim of the present study was to determine the histomorphometric aspects of brachiocephalic arteries in the japanese quail. the different layers of the brachiocephalic artery were studied quantitatively in 10, 20 and 60 days-old japanese quail; (n = 6) and both sexes. luminal diameter, thickness of the intima, media and adventitia, the percentage of the intima, media and adventitia, as com ...	2015	26893806
bioaccessibility tests accurately estimate bioavailability of lead to quail.	hazards of soil-borne lead (pb) to wild birds may be more accurately quantified if the bioavailability of that pb is known. to better understand the bioavailability of pb to birds, the authors measured blood pb concentrations in japanese quail (coturnix japonica) fed diets containing pb-contaminated soils. relative bioavailabilities were expressed by comparison with blood pb concentrations in quail fed a pb acetate reference diet. diets containing soil from 5 pb-contaminated superfund sites had ...	2016	26876015
genetic evaluation of early egg production and maturation traits using two different approaches in japanese quail.	the objective of the current study was to evaluate a multi-trait selection program based on aggregated breeding values using an animal model best linear unbiased prediction (blup) in japanese quail. the estimated genetic gain was compared by both mixed model and least squares methods. data of 1,682 female japanese quails were collected through four consecutive generations to estimate genetic gain, depending on aggregated breeding values, for age at first egg (afe), body weight at sexual maturity ...	2016	26769265
stimulation of food intake after central administration of gonadotropin-inhibitory hormone is similar in genetically selected low and high body weight lines of chickens.	gonadotropin-inhibitory hormone (gnih), first isolated from the brain of the japanese quail (coturnix japonica), when centrally administered exerts orexigenic effects in birds. however, the precise mechanisms mediating this effect are poorly understood and limited information is available on this effect in models of body weight dysfunction. thus, the purpose of the present study was to investigate appetite-associated effects of gnih in chicks from lines that have been selected for either low or ...	2016	26764213
normal ultrasonographic images of reproductive organs of female japanese quails ( coturnix coturnix japonica): a laboratory animal model.	certain special biological characteristics of japanese quails ( coturnix coturnix japonica) could enable quicker and less expensive laboratory experiments than similar studies using mice or chickens. moreover, due to some physiological similarities with humans, quails have been recognized as an ideal laboratory model for experiments in some fields such as immunology, endocrinology, and reproductive biology. the aim of this study was to acquire normal ultrasonographic images of reproductive organ ...	2017	26763492
effect of hempseed (cannabis sativa sp.) inclusion to the diet on performance, carcass and antioxidative activity in japanese quail (coturnix coturnix japonica).	this study was conducted to determine the effects of hempseed (h) on performance, carcass traits, and antioxidant activity in japanese quail (coturnix coturnix japonica). a total of 192 quail with seven-days old were divided into four experimental groups with four replicates. the treatments were; i) control diet (c, no hempseed); ii) 5% hempseed in diet (h5); iii) 10% hempseed in diet (h10); and iv) 20% hempseed in diet (h20). the body weight (bw) and feed intake (fi) of quail was determined at ...	2014	26760931
the gastrointestinal tract microbiota of the japanese quail, coturnix japonica.	microbiota in the gastrointestinal tract (git) plays an essential role in the health and well-being of the host. with the exception of chickens, this area has been poorly studied within birds. the avian git harbours unique microbial communities. birds require rapid energy bursts to enable energy-intensive flying. the passage time of feed through the avian git is only 2-3.5 h, and thus requires the presence of microbiota that is extremely efficient in energy extraction. this investigation has use ...	2016	26758298
inferring relationships between phosphorus utilization, feed per gain, and bodyweight gain in an f2 cross of japanese quail using recursive models.	phosphorus utilization (pu) has received considerable attention in poultry nutrition. however, reliable estimates of genetic parameters for pu and related traits have largely not been reported until now; however, these are needed to assess whether selection for an improved pu would result in selection response. a large japanese quail f2 cross was generated and 888 f2 individuals were phenotyped for pu, bodyweight gain (bwg), and feed per gain (f:g). because it can reasonably be assumed that the ...	2016	26740136
[effects of hypoxia and growth factors on the angiogenic activity of multipotent mesenchymal stromal cells].	the effects of fetal calf serum (fcs) growth factor concentration and cell growth phase on production of angiogenic mediators by mesenchymal stromal cells (mscs) at different o2 levels (20 and 5%) was studied. for this purpose vascular endothelial growth factor (vegf-a) production was measured in msc-conditioned medium (cm); besides, branching vessels as well as vessel end points (ramification) in the chorioallantoic membrane of japanese quail eggs (coturnix coturnix japonica) were counted follo ...	2015	26738305
a simple estimation of ideal profile of essential amino acids and metabolizable energy for growing japanese quail.	an experiment was conducted to determine apparent metabolizable energy (ame) and amino acid requirements of growing japanese quail based on ideal protein concept using artificial neural network and desirability function (d-ann). seven-day-old quail chicks were assigned to nine experimental diets based on central composite design (ccd) containing five levels of ame (2809-3091 kcal/kg) and cp (19-24.8% of diet). the ratio of lysine (lys) to cp was set at 0.053 among all treatments, and remaining e ...	2016	26671312
comparison of two 4.7-milligram to one 9.4-milligram deslorelin acetate implants on egg production and plasma progesterone concentrations in japanese quail (coturnix coturnix japonica).	reproductive disease in captive avian species is common, and medical management is often chosen over surgical removal of the reproductive tract. in a previous study with japanese quail, a single 4.7-mg deslorelin acetate implant reversibly decreased egg production in 6 out 10 birds for 70 days. the objective of the current study was to evaluate the effects of two 4.7-mg deslorelin acetate implants versus one 9.4-mg implant on egg production and plasma progesterone concentrations in japanese quai ...	2015	26667535
dietary rosemary oil alleviates heat stress-induced structural and functional damage through lipid peroxidation in the testes of growing japanese quail.	supplementation of natural antioxidants to diets of male poultry has been reported to be effective in reducing or completely eliminating heat stress (hs)-induced reproductive failures. in this study, the aim is to investigate whether rosemary oil (ro) has a protective effect on hs-induced damage in spermatozoa production, testicular histologic structures, apoptosis, and androgenic receptor (ar) through lipid peroxidation mechanisms in growing japanese quail. male chicks (n=90) at 15-days of age ...	2016	26656503
7α-hydroxypregnenolone regulates diurnal changes in sexual behavior of male quail.	in the japanese quail, 7α-hydroxypregnenolone, a previously undescribed avian neurosteroid, is actively produced in the brain. 7α-hydroxypregnenolone acts as a novel neuronal activator to stimulate locomotor activity of quail. therefore, in this study, we determined whether 7α-hydroxypregnenolone changes the expression of sexual behavior in japanese quail. we first measured diurnal changes in sexual behavior of male quail exposed to a long-day photoperiod. we found that sexual behavior of male q ...	2016	26608258
in vivo micronucleus test in the assessment of cytogenotoxicity of landfill leachates in three animal models from various ecological habitats.	the in vivo micronucleus (mn) test, a standard test for the genotoxicity screening of xenobiotics, was used to evaluate the cytotoxic and genotoxic activities of landfill leachates in clarias gariepinus, coturnix coturnix japonica and rattus norvegicus. these organisms were exposed to various sub-lethal concentrations (1-50%) of olusosun and aba eku landfill leachates. at post exposure, peripheral erythrocytes from catfish and quail, and bone marrow cells of quail and rat were subjected to mn an ...	2016	26589948
identification of the long-sought leptin in chicken and duck: expression pattern of the highly gc-rich avian leptin fits an autocrine/paracrine rather than endocrine function.	more than 20 years after characterization of the key regulator of mammalian energy balance, leptin, we identified the leptin (lep) genes of chicken (gallus gallus) and duck (anas platyrhynchos). the extreme guanine-cytosine content (∼70%), the location in a genomic region with low-complexity repetitive and palindromic sequence elements, the relatively low sequence conservation, and low level of expression have hampered the identification of these genes until now. in vitro-expressed chicken and d ...	2016	26587783
the role of vitamin e or clay in growing japanese quail fed diets polluted by cadmium at various levels.	this study was conducted to verify whether vitamin (vit) e or natural clay as feed additives has the potential to modulate the deleterious effects resulting from exposure to cadmium (cd) in growing japanese quail. 648 japanese quail chicks (1 week old) were used to evaluate the effects of dietary cd (0, 40, 80 and 120 mg/kg diet) and two levels of vit e (0, 250 mg/kg diet) or two levels of natural clay (0 and 100 mg/kg diet) to study the influences of cd, vit e, clay or their different combinati ...	2016	26585391
long-term p-nitrophenol exposure can disturb liver metabolic cytochrome p450 genes together with aryl hydrocarbon receptor in japanese quail.	p-nitrophenol is a major metabolite of some organophosphorus compounds. it is considered to be one of nitrophenol derivatives of diesel exhaust particles that induce substantial hazards impacts on human and animal health. p-nitrophenol (pnp) is a persistent organic pollutant. consequently, bioaccumulation of pnp potentiates toxicity. the objectives of the current study were to assess the potential hepatic toxicity and pathway associated with long-term exposure to pnp. japanese quails were orally ...	2015	26563031
modelling inhibition of avian aromatase by azole pesticides.	the potential effects of pesticides and their metabolites on the endocrine system are of major concern to wildlife and human health. in this context, the azole pesticides have earned special attention due to their cytochrome p450 aromatase inhibition potential. cytochrome p450 aromatase (cyp19) catalyses the conversion of androstenedione and testosterone into oestrone and oestradiol, respectively. thus, aromatase modulates the oestrogenic balance essential not only for females, but also for male ...	2015	26535448
photoinduced changes in subcellular structures of the retinal pigment epithelium from the japanese quail coturnix japonica.	fifteen-week-old sexually mature female japanese quails (coturnix japonica) grown under various lighting conditions were used in the study. it was found that the number of mitochondria and phagosomes was increased by 1.5-fold in the retinal pigment epithelium from birds reared for 95 days under blue light (440-470 nm) vs. reduced blue light component conditions. also, it was found that egg production was increased by 15% in birds reared under blue light compared to other lightning conditions. th ...	2015	26531024
impact of cage stocking density on egg laying characteristics and related stress and immunity parameters of japanese quails in subtropics.	the aim of this study was to investigate the effects of different cage stocking densities on egg production parameters, as well as related stress and immunity indices in japanese quails under subtropical egyptian conditions. two hundred and sixteen birds of japanese quail at 14th week of age were used in this experiment. the birds were divided randomly into three groups: 60, 72 and 84. each group subdivided into 4 replicates, where the cages' floor spaces were 200 (s1 ), 167 (s2 ) and 143 (s3 ) ...	2016	26518149
the effect of diet and host genotype on ceca microbiota of japanese quail fed a cholesterol enriched diet.	two japanese quail strains, respectively atherosclerosis-susceptible (sus) and -resistant (res), have been shown to be good models to study cholesterol metabolism and transportation associated with atherosclerosis. our objective was to examine possible difference in cecal microbiota between these strains when fed a control diet and a cholesterol enriched diet, to determine how host genotype and diet could affect the cecal microbiome that may play a part in cholesterol metabolism. a factorial stu ...	2015	26500632
impact of temperature-humidity index on egg-laying characteristics and related stress and immunity parameters of japanese quails.	the aim of this study was to investigate the effect of temperature-humidity index (thi) level on productive parameters, welfare, and immunity in japanese quails. one hundred and eighty (180) birds of japanese quail, 14 weeks old, were used. birds were divided randomly into three equal groups, control (at low thi, less than 70), h1 (at moderate thi, 70-75), and h2 (at high thi, 76-80). birds in the control group had higher body weight (281.2 g, p = 0.001), egg mass (745 g, p = 0.001), fertility ( ...	2016	26489416
genetically modified crops in a 10-generation feeding trial on japanese quails--evaluation of its influence on birds' performance and body composition.	the effect of genetically modified (gm) feed components comprising soya bean meal and maize on the performance indices (reproduction, survival rate, growth, egg production, relative weight of chosen internal organs, and basic chemical composition of breast muscle and egg yolk) of japanese quails was investigated during a 10-generation trial. a total number of 8,438 healthy quail chicks were used in the course of the trial. in each generation, birds were maintained in 3 experimental groups differ ...	2015	26475068
parthenogenetic embryos from unfertilized chinese painted quail eggs alter albumen ph, gases, and ion concentrations during incubation.	parthenogenesis is a form of embryonic development that occurs without fertilization. recently, parthenogenesis has been reported in chinese painted quail eggs. in japanese quail, it has been shown that albumen ph of incubated fertile eggs is lower than that of incubated infertile eggs. however, it is unknown if alterations, similar to those in incubated fertile eggs, occur in albumen ph, gases, or ion concentrations from unfertilized eggs exhibiting parthenogenetic development. therefore, the o ...	2016	26474681
diagnosis and control of a lpai h5n8 outbreak in a japanese quail (coturnix coturnix japonica) commercial flock in the central valley of california.	in april 2014 an outbreak of low pathogenic avian influenza h5n8 north american genetic lineage was diagnosed in a commercial quail operation in stanislaus county, california. sudden increase in mortality prompted the submission of 20 japanese quail hens (coturnix c. japonica) to the california animal health and food safety laboratory, turlock branch. oropharyngeal and cloacal swabs tested positive for influenza a virus h5n8 by real-time reverse transcription-polymerase chain reaction. the virus ...	2015	26473689
effect of a single polymorphism in the japanese quail nk-lysin gene on antimicrobial activity.	nk-lysins are cationic peptides that play important roles in host protection, and are an important constituent of innate immunity. we identified nine single-nucleotide polymorphisms (snps) in the nk-lysin open reading frame (orf) from 32 japanese quails in six strains: a, b, nd, k, p, and y. the g to a substitution at nucleotide position 272 in the orf resulted in a gly (g) to asp (d) amino acid substitution (cj31g and cj31d alleles). the cj31d allele was detected in p (frequency 0.76) and y (fr ...	2016	26472627
morphometric identification, gross and histopathological lesions of eimeria species in japanese quails (coturnix coturnix japonica) in zaria, nigeria.	the objective of the study was to identify the species, gross and histopathological lesions of eimeria in japanese quails in zaria. a total of 400 fresh faecal samples were collected and 10 quail birds were purchased from a quail farm. the faecal samples were processed using simple floatation technique. oocysts shape indices of sporulated oocysts were determined. the intestines were observed for gross lesions and segments were analyzed using giemsa stain and haematoxylin and eosin stain and then ...	2014	26464933
the effects of transportation stress on japanese quail (coturnix coturnix japonica) fed corn-based diet in comparison with wheat-based diet supplemented with xylanase and phytase.	harvesting, handling and transporting quails to the slaughterhouses, other farms and laboratories might covertly reduce their welfare. the aim of this study was to evaluate the effects of two major sources of energy in poultry nutrition on reducing transportation stress in japanese quail (coturnix coturnix japonica). male quails (n = 60) were divided into two groups. the first group was fed corn-based diet, and the second was fed wheat-based diet supplemented with xylanase and phytase. at the en ...	2016	26459218
toxicity and cytochrome p450 1a mrna induction by 6-formylindolo[3,2-b]carbazole (ficz) in chicken and japanese quail embryos.	the tryptophan derivative formylindolo[3,2-b]carbazole (ficz) binds with high ligand affinity to the aryl hydrocarbon receptor (ahr) and is readily degraded by ahr-regulated cytochrome p450 family 1 (cyp1) enzymes. whether in vivo exposure to ficz can result in toxic effects has not been examined and the main objective of this study was to determine if ficz is embryotoxic in birds. we examined toxicity and cyp1 mrna induction of ficz in embryos from chicken (gallus domesticus) and japanese quail ...	2016	26456929
relative sensitivities among avian species to individual and mixtures of aryl hydrocarbon receptor-active compounds.	dioxins and dioxin-like compounds (dlcs) are potent toxicants to most vertebrates. sensitivities to dlcs vary among species. in the present study, the sensitivities of avian species (chicken [gallus gallus], ring-necked pheasant [phasianus colchicus], and japanese quail [coturnix japonica]) to some polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (pcdd/fs) were determined by using species-specific, in vitro, transactivation assays based on a luciferase reporter gene under cont ...	2016	26442838
expression of prostaglandin-synthesizing enzymes (cyclooxygenase 1, cyclooxygenase 2) in the ovary of the quail (coturnix japonica).	cyclooxygenase is known to be the ratelimiting enzyme in the production of prostaglandins. so far, in different bird species there have been found two isoforms of cyclooxygenases (cox), cyclooxygenase 1 (cox-1) and cyclooxygenase 2 (cox-2). these isoforms along with prostaglandins are regarded to possess a determining influence on the success in female reproduction. only in a few bird species the expression sites of cyclooxygenases have been investigated. in this study we report on the expressio ...	2015	26441201
comprehensive identification of sexual dimorphism-associated differentially expressed genes in two-way factorial designed rna-seq data on japanese quail (coturnix coturnix japonica).	japanese quail (coturnix coturnix japonica) reach sexual maturity earlier, breed rapidly and successfully, and cost less and require less space than other birds raised commercially. given the value of this species for food production and experimental use, more studies are necessary to determine chromosomal regions and genes associated with gender and breed-differentiation. this study employed trinity and edger for transcriptome analysis of next-generation rna-seq data, which included 4 tissues o ...	2015	26418419
subchronic exposure to chlorpyrifos affects energy expenditure and detoxification capacity in juvenile japanese quails.	effects of pesticides on non-target organisms have been studied in several taxa at different levels of biological organization, from enzymatic to behavioral responses. although the physiological responses may be associated with higher energy costs, little is known about metabolic costs of pesticide detoxification in birds. to fill this gap, we exposed orally (diet) 15-d old coturnix coturnix japonica individuals to sublethal doses of chlorpyrifos (10 and 20 mg active ingredient/kg dry food) for ...	2016	26414738
molecular, cellular, morphological, physiological and behavioral aspects of gonadotropin-inhibitory hormone.	gonadotropin-inhibitory hormone (gnih) is a hypothalamic neuropeptide that was isolated from the brains of japanese quail in 2000, which inhibited luteinizing hormone release from the anterior pituitary gland. here, we summarize the following fifteen years of researches that investigated on the mechanism of gnih actions at molecular, cellular, morphological, physiological, and behavioral levels. the unique molecular structure of gnih peptide is in its lpxrfamide (x=l or q) motif at its c-termina ...	2016	26409890
estrogen receptor β activation rapidly modulates male sexual motivation through the transactivation of metabotropic glutamate receptor 1a.	in addition to the transcriptional activity of their liganded nuclear receptors, estrogens, such as estradiol (e2), modulate cell functions, and consequently physiology and behavior, within minutes through membrane-initiated events. the membrane-associated receptors (mers) underlying the acute effects of estrogens on behavior have mostly been documented in females where active estrogens are thought to be of ovarian origin. we determined here, by acute intracerebroventricular injections of specif ...	2015	26400941
locally elevated cortisol in lymphoid organs of the developing zebra finch but not japanese quail or chicken.	glucocorticoids are important for production of functional lymphocytes and immunity. in altricial neonates, adrenal glands are unresponsive and local glucocorticoid synthesis in lymphoid organs may be necessary to support lymphocyte development. precocial neonates, in contrast, have fully responsive adrenal glucocorticoid production, and lymphoid glucocorticoid synthesis may not be necessary. here, we found that in altricial zebra finch hatchlings, lymphoid organs had dramatically elevated endog ...	2016	26366679
discovery and functional characterization of leptin and its receptors in japanese quail (coturnix japonica).	leptin is an important endocrine regulation factor of food intake and energy homeostasis in mammals; however, the existence of a poultry leptin gene (lep) is still debated. here, for the first time, we report the cloning of a partial exon 3 sequence of lep (qlep) and four different leptin receptor splicing variants, including a long receptor (qleprl) and three soluble receptors (qlepr-a, qlepr-b and qlepr-c) in japanese quail (coturnix japonica). the qlep gene had high gc content (64%), which is ...	2016	26342967
basic characterization of avian β-defensin genes in the japanese quail, coturnix japonica.	in this study, we identified a cluster of 14 avian β-defensins (avbd; approximately 66 kbp) in the japanese quail, coturnix japonica. except for avbd12 (cjavbd12) and -13, the cjavbds coding sequences exhibited greater than 78.0% similarity to the respective orthologous chicken avbd genes (ggavbd). the putative amino acid sequence encoded by each cjavbd contained six cysteine residues and the gxc (x1-2) motif considered essential for the β-defensin family. each cjavbds also formed a sub-group wi ...	2016	26338292
nesfatin-1: localization and expression in avian gonads and its modulation by temporal phase relation of neural oscillations in female japanese quail, coturnix coturnix japonica.	in a search for new appetite-controlling signals, the peptide nesfatin-1, expressed in the brain and peripheral tissues of rodents and humans has been reported to regulate feeding by reducing food intake. recently it has also been reported that nesfatin-1 might be involved in regulating the reproductive axis in fishes and mammals, but its expression and physiological role if any, is not yet known in birds. in the present study, localization and expression of nesfatin-1 was observed in the testis ...	2015	26319133
an individually fitted physical barrier device as a tool to restrict the birds' spatial access: can their use alter behavioral responses?	social interactions have been extensively studied in poultry in a variety of environmental situations. many studies allow full social contacts between birds, but there are others in which the interactions are tested through barriers (wire mesh or glass). thus a situation where, according to their needs, some birds can get access to physical contact with conspecifics while others cannot, would be useful to expand the testing options for social interaction studies. we developed an individual physi ...	2015	26240397
hit or miss: fertilization outcomes of natural inseminations by japanese quail.	variation in fertilization success underlies sexual selection, yet mating does not guarantee fertilization. the relationship between natural inseminations and fertilization success is essential for understanding sexual selection, yet that relationship and its underlying mechanisms are poorly understood in sperm-storing vertebrates such as birds. here the relationship is analyzed in mating trials using japanese quail (coturnix japonica), which show striking variation in the fertilizing success of ...	2015	26222780
effects of experimentally increased in ovo lysozyme on egg hatchability, chicks complement activity, and phenotype in a precocial bird.	in birds, spectrum of egg white proteins deposited into the egg during its formation are thought to be essential maternal effects. particularly, egg white lysozyme (lsm), exhibiting great between and within species variability, is considered to be essential for developing avian embryos due to its physiological, antimicrobial, and innate immune defense functions. however, there have been few studies investigating effects of lsm on early post-hatching phenotype, despite its broad physiological and ...	2015	26205223
immunohistochemical localization of epidermal growth factor system in the lung of the japanese quail (coturnix coturnix japonica) during the post-hatching period.	the purpose of this study is to determine the possible changes in the localization of the four epidermal growth factor receptors and three ligands in quail lungs from the first day of hatching until the 125th after hatching using immunohistochemical methods. immunohistochemical results demonstrated that four egfrs and their ligands are chiefly located in the cytoplasm of cells. additionally, erbb4, areg, and nrg1 are localized to the nucleus and nucleolus, but egf is present in the nucleolus. er ...	2015	26179370
predicting toxicities of diverse chemical pesticides in multiple avian species using tree-based qsar approaches for regulatory purposes.	a comprehensive safety evaluation of chemicals should require toxicity assessment in both the aquatic and terrestrial test species. due to the application practices and nature of chemical pesticides, the avian toxicity testing is considered as an essential requirement in the risk assessment process. in this study, tree-based multispecies qsar (quantitative-structure activity relationship) models were constructed for predicting the avian toxicity of pesticides using a set of nine descriptors deri ...	2015	26158470
identification and localization of gonadotropin-inhibitory hormone (gnih) orthologs in the hypothalamus of the red-eared slider turtle, trachemys scripta elegans.	gonadotropin-inhibitory hormone (gnih) was discovered in 2000 as a novel hypothalamic neuropeptide that inhibited gonadotropin release in the japanese quail. gnih and its orthologs have a common c-terminal lpxrfamide (x=l or q) motif, and have been identified in vertebrates from agnathans to humans, apart from reptiles. in the present study, we characterized a cdna encoding gnih orthologs in the brain of the red-eared slider turtle. the deduced precursor protein consisted of 205 amino-acid resid ...	2016	26130239
effects of recombinant lycopene dietary supplement on the egg quality and blood characteristics of laying quails.	this study was conducted to determine the effect of dietary supplement of bacterial lycopene (bl) produced by escherichia coli on the egg quality and blood characteristics of laying quails. the antioxidant activity measurement showed that bl exhibited 100% 1,1-diphenyl-2-picrylhydrazyl (dpph) scavenging capacity at a concentration of 4.65 μg/ml, which was more effective than butylated hydroxytoluene (bht) and commercial lycopene (cl). moreover, seven dietary groups of laying quails consisting of ...	2015	26100321
estimation of lysine requirements of growing japanese quail during the fourth and fifth weeks of age.	a dose-response assay was conducted using broken-line regressions to estimate the lysine (lys) requirements of quail chicks from 21 to 35 d of age. a basal diet was formulated to be adequate in all nutrients other than lys. incremental levels of l-lys.hcl were added to the basal diet at the expense of a mix of cornstarch, nahco3, and nacl to create 6 experimental diets containing 0.84 to 1.59% lys. feed intake (fi), weight gain (wg), and feed conversion ratio (fcr) responded quadratically to inc ...	2015	26069252
[comparative evaluation of the effects of hypoxic gaseous mixtures varying in oxygen concentration on japanese quail embryogenesis].	the paper presents the results of comparative characterization of the effects of low oxygen levels (10 ± 0.5 and 14.5 ± 0.5%) on developing organism. four-day old embryos of the japanese quail (coturnix coturnix japonica) were chosen for the object of investigation as this is the age when avians acquire their organs and systems. acute hypoxia (10 ± 0.5% oxygen) caused a general death of the embryos, and serious abnormalities of the eye and brain, and ectopy. embryos that developed in the low-oxy ...	2014	26035993
egg drop syndrome-76 (eds-76) in japanese quails (coturnix coturnix japonica): an experimental study revealing pathology, effect on egg production/quality and immune responses.	egg drop syndrome-76 (eds-76) is a recognized disease of chickens and japanese quails, which is of high economic importance due to its drastic negative effects on egg production in laying birds. the aim of the present study was to better understand the eds-76 viral disease process in japanese quails (coturnix coturnix japonica), since very limited studies have been conducted in this species of birds. for this purpose, an experimental study was conducted with infection of eds-76 virus in laying j ...	2014	26035955
the metabolic rate of cultured muscle cells from hybrid coturnix quail is intermediate to that of muscle cells from fast-growing and slow-growing coturnix quail.	growth rate is a fundamental parameter of an organism's life history and varies 30-fold across bird species. to explore how whole-organism growth rate and the metabolic rate of cultured muscle cells are connected, two lines of japanese quail (coturnix coturnix japonica), one that had been artificially selected for fast growth for over 60 generations and a control line were used to culture myoblasts. in line with previous work, myoblasts from the fast growth line had significantly higher rates of ...	2015	26002518
effects of preincubation application of low and high frequency ultrasound on eggshell microbial activity, hatchability, supply organ weights at hatch, and chick performance in japanese quail (coturnix coturnix japonica) hatching eggs.	the aim of the current study was to establish the effects of preincubation application of low and high frequency ultrasound on egg weight loss, hatchability, supply organ weights, chick performance, and eggshell microbial activity in japanese quail (coturnix coturnix japonica). a total of 630 fresh eggs were randomly divided into 3 groups. treatments were no ultrasound but eggs were sprayed with benzalkonium chloride solution (b), 35 khz ultrasound applied for 30 min (u35), and 130 khz ultrasoun ...	2015	25971949
endothelin receptor b2 (ednrb2) gene is associated with spot plumage pattern in domestic ducks (anas platyrhynchos).	endothelin receptor b subtype 2 (ednrb2) is a seven-transmembrane g-protein coupled receptor. in this study, we investigated ednrb2 gene as a candidate gene for duck spot plumage pattern according to studies of chicken and japanese quail. the entire coding region was cloned by the reverse transcription polymerase chain reaction (rt-pcr). sequence analysis showed that duck ednrb2 cdna contained a 1311 bp open reading frame and encoded a putative protein of 436 amino acids residues. the transcript ...	2015	25955279
biochemical parameters in japanese quails coturnix coturnix japonica infected with coccidia and treated with toltrazuril.	the activity of aspartate aminotransferase, alanine aminotransferase and lactate dehydrogenase, total protein, albumin and cholesterol levels were determined in the blood serum of japanese quails infected with coccidia and treated with baycox (active ingredient: toltrazuril). lower levels of ast and alt activity were noted in treated birds regardless of the applied baycox dose. the biochemical changes observed in the blood serum of japanese quails point to coccidia-induced damage of digestive sy ...	2015	25928913
age-dependent change in the morphology of nucleoli and methylation of genes of the nucleolar organizer region in japanese quail coturnix japonica) model (temminck and schlegel, 1849) (galliformes: aves).	nucleoli are the product of the activity of nucleolar organizer regions (nor) in certain chromosomes. their main functions are the formation of ribosomal subunits from ribosomal protein molecules and the transcription of genes encoding rrna. the aim of the study was to determine the shape of nucleoli and analyse methylation in the gene rn28s in the spermatocytes of male japanese quail (coturnixjaponica) in two age groups. nucleoli were analysed in cells of the first meiotic prophase. their numbe ...	2014	25916156
characteristics of egg parts, chemical composition and nutritive value of japanese quail eggs--a review.	all nutrients including proteins, lipids, vitamins, minerals and growth factors required by the developing embryo, as well as a number of defense factors, can be found in avian eggs. eggs are also a source of other substances with biological functions and activities inter alia immune proteins and enzymes. although chicken egg consumption is currently at the highest level, eggs from other species are also becoming popular. since our knowledge about japanese quail eggs is still limited, the aim of ...	2014	25916155
effect of cinnamon (cinnamomum zeylanicum) bark oil on heat stress-induced changes in sperm production, testicular lipid peroxidation, testicular apoptosis, and androgenic receptor density in developing japanese quails.	the aim of this study was to investigate the effect of cinnamon bark oil (cbo) on heat stress (hs)-induced changes in sperm production, testicular lipid peroxidation, testicular apoptosis, and androgenic receptor (ar) density in developing japanese quails. fifteen-day-old 90 male chicks were assigned to two main groups. the first group (45 chicks) was kept in a thermoneutral room at 22 °c for 24 h/day. the second group (45 chicks) was kept in a room with high ambient temperature at 34 °c for 8 h ...	2015	25913274
light colour and intensity alters reproductive/seasonal responses in japanese quail.	an extensive literature is available on the photoperiodic responses of avian species but studies on light colour and wavelength from light emitting diode (led) sources on reproduction are limited. hence, an experiment was designed to study the effect of different colours and intensities of light on the reproductive responses of japanese quail. three-week old quail were exposed to five different light conditions with a long photoperiod (ld 16:8): wt (white fluorescent light 100 lux as control), w ...	2015	25912834
morinda citrifolia l. leaf extract as antibacterial salmonella typhimurium to increase productivity of quail (coturnix coturnix japonica).	the objective of this study was to apply effect of morinda citrifolia l. citrifolia l. leaf extract as antibacterial of salmonella typhimurium on mortality of day old quail (doq), egg production and hen day, hatchability of layer quail. this research was conducted at laboratory of microbiology and laboratory of poultry nutrition, faculty of animal science, bogor agricultural university and slamet quail farms cilangkap, sukabumi, west java, indonesia on march-july 2012. two hundred and forty head ...	2014	25911847
genetic evaluation of carcass traits in japanese quail using ultrasonic and morphological measurements.	1. a study was conducted to evaluate the carcass composition of 1083 live birds using ultrasonic and morphological measurements and to estimate the genetic relationship between predicted and dissected carcass composition in japanese quail. 2. birds were reared for 35 d, and morphological measurements consisting of the length and width of breast muscle were recorded for all birds using a digital caliper. after slaughtering, the weight and percentage of carcass traits were measured on chilled carc ...	2015	25906384
interference coloration as an anti-predator defence.	interference coloration, in which the perceived colour varies predictably with the angle of illumination or observation, is extremely widespread across animal groups. however, despite considerable advances in our understanding of the mechanistic basis of interference coloration in animals, we still have a poor understanding of its function. here, i show, using avian predators hunting dynamic virtual prey, that the presence of interference coloration can significantly reduce a predator's attack s ...	2015	25878050
local modulation of steroid action: rapid control of enzymatic activity.	estrogens can induce rapid, short-lived physiological and behavioral responses, in addition to their slow, but long-term, effects at the transcriptional level. to be functionally relevant, these effects should be associated with rapid modulations of estrogens concentrations. 17β-estradiol is synthesized by the enzyme aromatase, using testosterone as a substrate, but can also be degraded into catechol-estrogens via hydroxylation by the same enzyme, leading to an increase or decrease in estrogens ...	2015	25852459
egg shell quality in japanese quail: characteristics, heritabilities and genetic and phenotypic relationships.	the objective of the present study was to estimate heritabilities as well as genetic and phenotypic correlations for egg weight, specific gravity, shape index, shell ratio, egg shell strength, egg length, egg width and shell weight in japanese quail eggs. external egg quality traits were measured on 5864 eggs of 934 female quails from a dam line selected for two generations. within the bayesian framework, using gibbs sampling algorithm, a multivariate animal model was applied to estimate heritab ...	2015	25851501
effect of in ovo injection of threonine on mucin2 gene expression and digestive enzyme activity in japanese quail (coturnix japonica).	a total of 540 japanese quail eggs were assigned to 9 treatments of 4 replicates to investigate the effect of in ovo injection of threonine (thr) on mucin2 (muc2) mrna expression and digestive enzyme activity. treatments were (non-injected) eggs and those in ovo injected with saline (0.05 or 0.1 ml) with or without thr (5 mg/ml) in two sites (in or under the air sac). on hatch day, 0.05 ml in ovo injected (under the air sac: tuas) hatchlings were divided into three groups based on nrc recommenda ...	2015	25840843
assessment of toxicity and coagulopathy of brodifacoum in japanese quail and testing in wild owls.	based on detection of hepatic residues, scavenging and predatory non-target raptors are widely exposed to second generation anticoagulant rodenticides (sgars). a small proportion, generally <10%, of tested birds are diagnosed as acutely poisoned. little is known, however, of sub-lethal effects of sgars, such as interaction of clotting capacity with traumatic injury. assessment of coagulation function of birds submitted live to wildlife rehabilitators or veterinarians may provide a means of estab ...	2015	25827684
interaction of specific temporal phase relations of circadian neural oscillations and long term photoperiodic responses in japanese quail, coturnix coturnix japonica.	specific temporal phase relations of neural oscillations are reported to regulate gonadal activity in many avian species but their interaction with photo-sexual response are still unclear. hence in the present study, 3week old japanese quail maintained in short days (experiment 1) received normal saline (sd control) or serotonin precursor 5-htp and dopamine precursor l-dopa injections at the interval of 12h (sd 12-h) for 13days. at 37week of age, one subgroup of sd 12-h received these drugs at t ...	2015	25801549
biology and pathology of caecal nematode subulura brumpti in japanese quails (coturnix coturnix japonica).	the occurrence of caecal nematode, subulura brumpti has become more common in quails being maintained in commercial farms in tamil nadu, india. two trials were carried out to study the biology and pathology of s. brumpti in quails. in the first trial, eight grower quails were divided into two groups (t1 and t2) comprising of four birds each. the birds belonged to the group t1 was infected with 20 cysts collected from beetle and birds of t2 group were kept as control. the beetle was identified as ...	2015	25801262
amino acid sequence of japanese quail (coturnix japonica) and northern bobwhite (colinus virginianus) myoglobin.	myoglobin has an important physiological role in vertebrates, and as the primary sarcoplasmic pigment in meat, influences quality perception and consumer acceptability. in this study, the amino acid sequences of japanese quail and northern bobwhite myoglobin were deduced by cdna cloning of the coding sequence from mrna. japanese quail myoglobin was isolated from quail cardiac muscles, purified using ammonium sulphate precipitation and gel-filtration, and subjected to multiple enzymatic digestion ...	2015	25794748
lineage-specific loss of fgf17 within the avian orders galliformes and passeriformes.	the genomic and developmental complexity of vertebrates is commonly attributed to two rounds of whole genome duplications which occurred at the base of the vertebrate radiation. these duplications led to the rise of several, multi-gene families of developmental proteins like the fibroblast growth factors (fgfs); a signaling protein family which functions at various stages of embryonic development. one of the major fgf assemblages arising from these duplications is the fgf8 subfamily, which inclu ...	2015	25791492
activity and safety of inhaled itraconazole nanosuspension in a model pulmonary aspergillus fumigatus infection in inoculated young quails.	pulmonary aspergillosis is frequently reported in parrots, falcons, and other birds held in captivity. inhalation is the main route of infection for aspergillus fumigatus, resulting in both acute and chronic disease conditions. itraconazole (itra) is an antifungal commonly used in birds, but its administration requires repeated oral dosing, and the safety margin is narrow. to investigate the efficacy of inhaled itra, six groups of ten young quails (coturnix japonica) were inoculated intratrachea ...	2015	25790942
suppressive effects of long-term exposure to p-nitrophenol on gonadal development, hormonal profile with disruption of tissue integrity, and activation of caspase-3 in male japanese quail (coturnix japonica).	p-nitrophenol (pnp) is considered to be one of nitrophenol derivatives of diesel exhaust particles. pnp is a major metabolite of some organophosphorus compounds. pnp is a persistent organic pollutant as well as one of endocrine-disrupting compounds. consequently, bioaccumulation of pnp potentiates toxicity. the objectives of the current study were to assess in vivo adverse effects of long-term low doses of pnp exposure on reproductive system during development stage. twenty-eight-day-old male ja ...	2015	25772865
effects of diet, time since defecation, and drying process of the droppings on corticosterone metabolite measurements in japanese quail.	the use of noninvasive methods for measuring fecal glucocorticoid metabolites is a useful tool for endocrine assessment particularly in studies where animals cannot be captured, when they should be sampled without disturbing their activities, and/or when welfare needs to be maximized. however, still no complete standardization exists for the methodology, and some confounding variables may play an important role affecting measurements and interpretation of results. the present study focused on wh ...	2015	25771534
[embryogenesis of the japanese quail in hypomagnetic conditions applied to deep space flights].	during future interplanetary flights and on the lunar base, astronauts and bioregenerative systems on the space ship will occur in an interplanetary magnetic field, which is much lower than the habitual geomagnetic field (gmf). it is known that hypomagnetic conditions have an adverse biological effect on human beings and other living systems. in our research the japanese quail has been chosen as one of the possible elements of the bioregenerative live support system. the magnetic system--helmhol ...	2016	25764820
fluid dynamics of liquid egg products.	the rheological behavior of liquid egg products (egg yolk, egg white, and whole liquid egg) was studied using a concentric cylinder viscometer. eggs of three poultry specimens were used: hen (isa brown), japanese quail (coturnix japonica), and goose (anser anser f. domestica). rheological behavior was pseudoplastic and flow curves fitted by the power law model (herschel-bulkley and ostwald-de waele). the meaning of rheological parameters on friction factors and velocity profiles during flow of l ...	2015	25761859
multifractal dimension and lacunarity of yolk sac vasculature after exposure to magnetic field.	several studies have reported about the effects of magnetic fields (mfs) on vascular tissue. extremely low frequency magnetic fields (elf-mfs) can promote either inhibition or stimulation of vasculogenesis and angiogenesis, depending upon the intensity and time of exposure to the mf. to investigate the possible effects of elf-mf on vascular processes, it is necessary to employ methods that allow parameterization of the vascular network. vascular network is a structure with fractal geometry; ther ...	2015	25711525
[the estimation of age-related sensitivity of the retinal pigment epithelium of japanese quail (coturnix japonica) to the light damage].	the effect of blue light damage (445-455 nm, 4 j/cm2) to retinal pigment epithelium (rpe) subcellular structures was investigated in 4 age risk groups (9, 25, 40 and 52 weeks) of japanese quail coturnix japonica by light and electron microscopy. the indicator of biological aging of rpe was age-related accumulation of lipofuscin granules: 5-6-fold increase in their quantity increasing by 5-6 times in quails at 52 weeks. the main photo-induced changes observed after 24 h of the photo radiation wer ...	2014	25669109
different temperature and cooling patterns at the blunt and sharp egg poles reflect the arrangement of eggs in an avian clutch.	incubation is an energetically demanding process during which birds apply heat to their eggs to ensure embryonic development. parent behaviours such as egg turning and exchanging the outer and central eggs in the nest cup affect the amount of heat lost to the environment from individual eggs. little is known, however, about whether and how egg surface temperature and cooling rates vary among the different areas of an egg and how the arrangement of eggs within the clutch influences heat loss. we ...	2015	25658846
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
developmental changes in the role of gonadotropin-inhibitory hormone (gnih) and its receptors in the reproductive axis of male xiaomeishan pigs.	gonadotropin-inhibitory hormone (gnih), a key regulator of vertebrate reproduction, was identified in the japanese quail in 2000, and rfamide-related peptide-3 (rfrp-3) was found to be a mammalian gnih ortholog. to further determine its role in the reproductive system of male xiaomeishan pigs, we systematically investigated changes in gnih and its receptors (gpr147 and gpr74) during the development of the reproductive axis of male pigs. we also investigated the direct effect of rfrp-3 on the syn ...	2015	25640458
avian egg odour encodes information on embryo sex, fertility and development.	avian chemical communication is a rapidly emerging field, but has been hampered by a critical lack of information on volatile chemicals that communicate ecologically relevant information (semiochemicals). a possible, but as yet unexplored, function of olfaction and chemical communication in birds is in parent-embryo and embryo-embryo communication. communication between parents and developing embryos may act to mediate parental behaviour, while communication between embryos can control the synch ...	2015	25629413
towards more physiological manipulations of hormones in field studies: comparing the release dynamics of three kinds of testosterone implants, silastic tubing, time-release pellets and beeswax.	hormone manipulations are of increasing interest in the areas of physiological ecology and evolution, because hormones are mediators of complex phenotypic changes. often, however, hormone manipulations in field settings follow the approaches that have been used in classical endocrinology, potentially using supra-physiological doses. to answer ecological and evolutionary questions, it may be important to manipulate hormones within their physiological range. we compare the release dynamics of thre ...	2015	25623144
chromium-histidinate ameliorates productivity in heat-stressed japanese quails through reducing oxidative stress and inhibiting heat-shock protein expression.	an experiment was conducted to evaluate the effects of a histidine complex of chromium (chromium histidinate, crhis) on egg production, lipid peroxidation and the expression of hepatic nuclear factor kappa-light-chain-enhancer of activated b cells (nf-κb) and heat-shock proteins (hsps) in japanese quails (coturnix coturnix japonica) exposed to heat stress (hs). a total of 180 5-week-old female quails were reared either at 22°c for 24 h/d (thermoneutral, tn) or 34°c for 8 h/d (heat stress, hs) fo ...	2015	25622754
non-coding rna derived from a conservative subtelomeric tandem repeat in chicken and japanese quail somatic cells.	subtelomeres are located close to the ends of chromosomes and organized by tandemly repetitive sequences, duplicated copies of genes, pseudogenes and retrotransposons. transcriptional activity of tandemly organized dna at terminal chromosomal regions and the distribution of subtelomere-derived non-coding rnas are poorly investigated. here we aimed to analyze transcriptional activity of subtelomeric tandem repeat in somatic tissues and cultured cells of birds. we focused on tissue-specific differ ...	2014	25610495