Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| rate of testicular maturation, in relation to gonadotrophin and testosterone levels, in quail exposed to various artificial photoperiods and to natural daylengths. | rates of testicular growth and plasma levels of fsh, lh and testosterone were determined in japanese quail exposed to various fixed photoperiods (number of hours of light: number of hours of darkness): 12l : 12d, 13l : 11d, 14l : 10d, 16l : 8d and 20l : 4d and to natural daylengths. all five artificial photoperiods stimulated spermatogenesis, with the testes reaching maturity after 30-40 days. maximum rates of testicular growth occurred with 14l : 10d, 16l : 8d or 20l : 4d but the rate was reduc ... | 1978 | 702020 |
| toxic effects of rice culture of aspergillus candidus and its metabolite, xanthoascin, on japanese quails. | laying japanese quails were fed on diet of 1:1 mixture of basal diet and rice cultures of 2 strains of aspergillus candidus. during 20 days of feeding, egg production was significantly reduced in these groups compared with the birds fed unmolded rice. the liver of the quails sacrificed at 20 days showed fatty degeneration of hepatic cells. following withdrawal of the moldy rice, rate of egg production recovered in 5 days. the suppressive effect of egg production seems to be secondary to hepatic ... | 1978 | 713126 |
| relation of vitamin d-dependent intestinal calcium-binding protein to calcium absorption during the ovulatory cycle in japanese quail. | 1978 | 714958 | |
| mercury metabolism in japanese quail. i. the effect of dietary mercury and selenium on their tissue distribution. | immature and adult coturnix quail were fed isolated soybean protein diets to which methylmercuric chloride or mercuric chloride were added with or without supplemental selenium for seven days. samples of brain, blood, liver, and kidney were analyzed for total mercury and selenium via atomic absorption spectrophotometry. selenium addition had no effect on the mercury concentration in kidney, brain, or blood but did tend to increase the concentration of mercury in the livers of the methylmercuric ... | 1978 | 724598 |
| mercury metabolism in japanese quail. ii. the effects of dietary mercury and selenium on blood and liver glutathione peroxidase activity and selenium concentration. | 1978 | 724599 | |
| variation in the response of plasma enzyme activities in avian species dosed with carbophenothion. | the response of various species of anser and branta geese and other avian species to the ingestion of carbophenothion (s-[[(4-chlorophenyl)thio]methyl] o,o-diethyl phosphorodithioate) has been investigated. optimum assay conditions for measurement of glutamate oxaloacetate transaminase, glutamate dehydrogenase, sorbitol dehydrogenase, and cholinesterase in avian plasma were developed for the study. the administration of acutely toxic doses of carbophenothion to japanese quail, pigeons, and chick ... | 1978 | 729517 |
| the endocrine control by luteinizing hormone of testosterone secretion from the testis of the japanese quail. | 1978 | 730045 | |
| elevated temperature effects on catecholamines and serotonin in brains of male japanese quail. | endogenous level and turnover of brain norepinephrine (ne), epinephrine (e), dopamine (da), and serotonin (5-ht) in male japanese quail were determined after acute (6 h) and chronic (5 wk) exposure to thermal (34 degrees c) and cyclic temperature (10--34 degrees c) stress. alpha-methyl-p-tyrosine (alpha-mt) and p-chlorophenylalanine (pcpa) were used to study the turnover of the monoamine levels. the differences between the monoamine levels of drug-treated birds and control (22 degrees c) birds w ... | 1978 | 730566 |
| [isolation and study of several properties of mycoplasma from japanese quail embryos]. | an agent isolated from japanese quail embryos was found to be pathogenic for chick embryo and quail embryo fibroblast cultures, to cause hemadsorption and hemagglutination of guinea pig erythrocytes. reproduction of the agent was inhibited by tetracycline and 5-bromodeoxyuridine. the agent incorporated both 3h-thymidine and 3h-uridine and had a buoyant density in sucrose gradient of 1.22 g/ml. mature mycoplasma forms were determined electron microscopically in gradient fractions in cell sections ... | 1978 | 735016 |
| endocrine cells in the pyloric region of the japanese quail (coturnix coturnix japonica). | the endocrine cells of the pyloric region of the japanese quail have been studied by light and electron microscopy. the quail pyloric region is a narrow circular zone (about 2 mm in width) between the gizzard and the duodenum. the endocrine cells are concentrated in this region, and they are represented by argyrophil cells. at least five types of endocrine cells are identified in this region by electron microscopy. type i cells are characterized by having round and large granules (350--550 nm in ... | 1978 | 736752 |
| response to bidirectional and reverse selection for mating behavior in japanese quail coturnix coturnix japonica. | reported is a genetic analysis of mating behavior in male japanese quail. data were obtained from replicated experiments involving 12 generations of divergent selection for high and low cumulative number of completed matings (cncm). no trait measured in the randombred control population changed significantly over time. asymmetrical responses between the divergent lines were observed during various phases of selection. reversed selection showed that additive genetic variance remains in the high l ... | 1978 | 736872 |
| effect of acute and chronic elevated air temperatures, constant (34 degrees) and cyclic (10--34 degrees), on brain and heart norepinephrine of male japanese quail. | 1978 | 738597 | |
| effects of photoperiod and temperature on testicular and thyroid activity of the japanese quail. | 1978 | 738600 | |
| isolation of mycoplasma gallisepticum from sinuses of three quails (coturnix coturnix japonica). | 1978 | 741620 | |
| the effect of hypophysectomy on the quail's oviduct response to low and high doses of estradiol benzoate. | the response of the quail's (coturnix coturnix japonica) oviduct to different doses of estradiol benzoate (eb) was explored in ovariectomized and ovariectomized-hypophysectomized animals. doses of eb ranged from 10 microgram to 1 mg/animal daily for 6 consecutive days; animals were sacrificed 24 h after the last injection. controls were injected with olive oil. parameters thought to reflect stimulation of the oviduct were 1) wet and dry weight, 2) dna, 3) rna, 4) soluble proteins, 5) ovalbumin, ... | 1978 | 744154 |
| the japanese quail (coturnix coturnix japonica) as a laboratory animal. | the use of the japanese quail as a laboratory animal was first reported in 1959. since then this species has been increasingly used as an avian model for biomedical research. a quail colony was recently established in the dental research institute to provide adult birds for teratogenicity and toxicity studies. these birds are not widely used for biological research in south africa at present. the housing, husbandry, breeding and nutrition of this species is described, together with the biomethod ... | 1978 | 745199 |
| testosterone and sex-related behavior and morphology: relationship during maturation and in the adult japanese quail. | 1978 | 750348 | |
| ultrastructure of the parathyroid gland of the quail, coturnix coturnix japonica. | 1978 | 750947 | |
| comparison of the transfer of 125i, 82br, and 26cl into the growing oocytes of the japanese quail. | laying japanese quail were doubly-labeled with either 125i and 36cl or 82br and 36cl. eighteen-hour accumulations, expressed as percent of tracer doses, were: growing oocytes, 125i 48.2 vs. 36cl 2.07, 82br 4.01 vs. 36cl 1.99; thyroids, 125i 10.6 vs. 36cl .030, 82br .027 vs. 36cl .020. concentrations (expressed as percent per gram) of the radionuclides in the growing oocytes and the thyroids as compared with concentrations in the plasma were: for oocytes, the mean 125i concentration was 199 times ... | 1978 | 751040 |
| specific binding of estrogen to nuclei from japanese quail kidney cells. | the binding properties of estrogen to japanese quail kidney cell nuclei were evaluated by 3h-17 beta-estradiol exchange. kidney cell nuclei from estrogenized male, as well as laying female quail, had a single class of saturable (0.1-0.2 pmol/mg dna), high affinity (kd = 1-2 x 10-10m) nuclear binding sites for 17 beta-estradiol. high affinity estrogen binding sites were not found in kidney cell nuclei from untreated males. various non-radioactive estrogens (17 beta-estradiol, estrone, estriol and ... | 1978 | 752636 |
| hormonal differentiation of sexual behavior in japanese quail. | 1978 | 753700 | |
| a multi-generation toxicity evaluation of p,p'-ddt and dieldrin with japanese quail. ii. tissue residues analyses. | selected tissues and egg yolks of japanese quail fed diets containing ddt or dieldrin in a four-generation (parental, f1, f2 and f3) study were analyzed for residues of parent compound and/or specific metabolites. diets containing ddt (5 and 50 ppm) or dieldrin (0.1 and 1.0 ppm) were fed to each generation for 10 wks followed by a 12-wk recovery period in order to determine generation-accumulative effects, maximum residue levels and decline of residues during recovery. tissue-residue storage and ... | 1978 | 755665 |
| the effect of lesions of the epithalamus on plasma aldosterone and corticosterone levels in japanese quail. | the peripheral plasma aldosterone and corticosterone concentrations were measured by cpba and ria method in japanese quails in which the subcommissural organ (sco) or the habenula had been destroyed. lesion of the sco reduced the plasma aldosterone level by 50%. the lesion of n. habenularis medialis and lateralis on the other hand did not affect the plasma corticosteroid level. it is suggested that in birds the sco takes part in a multifactorial regulation of aldosterone secretion. | 1978 | 757096 |
| turkey meningo-encephalitis: a general review. | turkey meningo-encephalitis (tme), a neuro-paralytic disease of the adult turkey caused by an arbovirus, was described in 1960 in israel, and not yet reported elsewhere. the seasonal outbreaks caused a high morbidity and a mortality up to 80%. a tendency toward spread has been found in the last two years. the tme virus was attenuated sucessfully by adapting it to a new host, the japanese quail, and a vaccine prepared with this attenuated virus is effective in immunizing turkeys to the disease. | 1976 | 769768 |
| steroid feedback in the male and female japanese quail. | 1976 | 789805 | |
| effect of chlorinated hydrocarbons on shell gland carbonic anhydrase and egg shell thickness in japanese quail. | japanese quail (coturnix japonica) were fed different levels of pesticide in their diets for 15 weeks. the levels of pesticide used were 25, 50, 100, 200 p.p.m. dde 25, 50, 100, 200 p.p.m. ddt and 50 p.p.m. pcb. carbonic anhydrase activities were analyzed in the shell glands and blood; pesticide concentration in the eggs of the first experiment was measured; egg weight, shell weight and shell thickness were also measured. no depression in growth was observed at any levels of pesticides used. qua ... | 1975 | 806067 |
| immunoglobulin a in some avian species other than the fowl. | in immunodiffusion tests rabbit and pheasant antisera monospecific for fowl iga detected a cross-reacting homologous protein in sera and/or secretions (saliva and bile) of pheasant, japanese quail, guinea fowl, turkey and pigeon. negative findings with duck samples do not preclude the occurrence of a similar immunoglobulin class in that species. | 1975 | 806945 |
| effects of polychlorinated biphenyls and terphenyls and polybrominated biphenyls on pentobarbital sleeping times of japanese quail. | polychlorinated biphenyls (aroclor 1221, 1232, 1242, 1248, 1254, 1260, 1262, and 1268), polychlorinated terphenyls (aroclor 5460), a mixture of polychlorinated biphenyls and terphenyls (aroclor 4465) and polybrominated biphenyls (bp-6) were administered in a single dose, 100 mg/kg body weight injected orally, to mature male and female japanese quail. two hr after aroclor treatment, pentobarbital sleeping times were prolonged (2 to 3 times control) in both male and female quail. twenty-four hr af ... | 1975 | 808178 |
| effects of pcbs, ddt, and mercury compounds upon egg production, hatchability and shell quality in chickens and japanese quail. | dietary polychlorinated biphenyls (pcbs), ddt and related compounds, in well controlled experiments, produced no detrimental effects upon egg shell quality in single comb white leghorm chickens or in japanese quail. pcbs caused some decrease in egg production and a drastic reduction in hatchability in chickens, but not in japanese quail. inorganic mercury as hgso4 or hgcl2, at dietary levels up to 200 p.p.m. of hg, had only small effects, if any, upon egg production, hatchability, shell quality, ... | 1975 | 809763 |
| [location of nucleolar organizers in somatic nuclei of newly-formed ovary of japanese quail (coturnix coturnix japonica)]. | the localization of nucleolar organizers has been studied in the nuclei of the somatic cells of one-day-old quail ovaries with in situ hybridization techniques. in these cells the nucleolus apparatus has a chromocentre formed by heterochromatin and small nucleoli typified by cytochemical and ultrastructural characteristics, associated at the periphery of the chromocentre. after hybridization wtih [3h] rrna (28 s-18 s) and histoautoradiography, levels of radioactivity are detected only on the nuc ... | 1975 | 811380 |
| [amino acid uptake in the magnum mucosa as affected by egg formation in the japanese quail]. | 1976 | 817543 | |
| [the localization of primordial germ cells in japanese quail embryos using a technic of ultraviolet irradiation]. | in the japanese quail embryo at the stage of 6 pairs of somites, ultraviolet irradiation of the extraembryonic crescent-shaped area anterior to the level of the first somites does not lead to total sterilization of the developing gonads. there are always subsisting primordial germ cells which apparently can restore the population of gonocytes. on the contrary, complete sterilization can be obtained by irradiating the area extending posteriorly to the level of the hensen node. | 1976 | 819163 |
| [formation of intercellular contacts between embryonic quail and chicken cardiomyoblasts in culture in vitro]. | in mixed cultures of japanese quail and chick cardiac cells, it is possible to recognize the two cell types by the structural differencies of their nuclei. therefore, the formation in culture of intercellular contacts can be observed. | 1976 | 820463 |
| [demonstration in japanese quails of genetic differences in survival from hypoxia]. | 164 quails (coturnix coturnix japonica; 94 males and 40 females), 27-55 days old and belonging to 9 families, each family being issued from a different couple of parents, were submitted to an acute nitrogen hypoxia which resulted in an overall mortality of 43.29%. the fact that a high statistically significant (p less than 0,001) heterogeneity was pointed out in these different families supports the existence of a genetic component of resistance towards hypoxia. | 1976 | 825239 |
| [parathion axial teratogenesis after giving several compounds with known anti-teratogenic or antitoxic properties in vertebrate adults or embryos after exposure to organic phosphates. study in the quail embryo (coturnix coturnix japonica)]. | axial abnormalities, highly specific of parathion, are prevented by pyridine aldoximes p2s, 2-pam and tmb4. atropine, well known as an antimuscarinic agent is ineffective and so it is for tryptophan and dmso, compounds having protective effect on some morphogenetic disturbances induced by organic phosphates. these results point out the specificity of pyridine aldoximes as alleviating agents on the characteristic axial deformities induced by parathion. | 1976 | 826344 |
| effects of sevin on the reproductive biology of the coturnix. | adult coturnix quail (coturnix coturnix japonica) were subjected to three levels of carbaryl pesticide treatment (sevin-20 p.p.m., 40 p.p.m., and 400 p.p.m) and monitored to observe any modifications in either their reproductive biology or behavior. there was an increase in the amount of pesticide excreted with increasing treatment levels during the first 48 hours following intubation, after which pesticide levels in the fecal material for all groups approached zero. addditionally, significant a ... | 1976 | 828254 |
| [results of a study of live mumps vaccine from strain l-3 produced by the moscow research institute for viral preparations. characteristics of the vaccine]. | for some years the moscow research institute of virus preparations carried out studies concerned with the elaboration of conditions for production and control of mumps vaccine from the leningrad-3 (l-3) strain under experimental production conditions. twenty nine batches of the vaccine were prepared, tested and studied in extensive field trials. the paper presents the optimal conditions for the preparation of the live mumps vaccine from the l-3 strain in japanese quail embryo cell cultures. in m ... | 1976 | 829008 |
| effects of dimethylaminoethanol upon life-span and behavior of aged japanese quail. | the lysosome hypothesis of aging predicts that membrane stabilizers will extend life-span. stabilizers containing the dimethylaminoethanol moiety (dmae) have been reported to extend the life-span of drosophila and mice. we tested the prediction in japanese quail (n = 15) by administering dmae bitartrate (18.4 mg/kg/day) in the drinking water for 69 weeks, starting at 195 weeks of age. a matched control group (n = 14) received tartaric acid (4.0 mg/kg/day) in the water. contrary to the prediction ... | 1977 | 830732 |
| altered yolk structure and reduced hatchability of eggs from birds fed single doses of petroleum oils. | yolk deposited by japanese quail was abnormal for 24 hours after the oral administration of a single capsule containing 200 milligrams of bunker c oil. both the structure and the staining properties of the yolk were affected. fewer eggs were laid during the 4 days after dosing, compared to controls, and hatchability was drastically reduced. hatchability returned to normal in 4 days. three other reference oils also affected yolk structure. canada geese given 2 grams and chickens given 500 milligr ... | 1977 | 836586 |
| development of dustbathing components in bobwhite and japanese quail. | the development of dustbathing components was investigated in bobwhite and japanese quail. the incidence and frequencies of components for both species increased with age, but dustbathing occurred earlier in japanese quail. the dust toss, head rub, and side rub components invariably developed in the same order they occur during an adult bout. the topographies of many components changed systematically with a "rudimentary" form preceding the typical adult form. large individual differences were ob ... | 1977 | 838163 |
| [effect of accelerations, additional weight load and hypokinesia on protein catabolism in the japanese quail (coturnix coturnix japonica)]. | activities of glutamate and xanthine dehydrogenases were measured in four groups of quails (coturnix coturnix japonica): 1) hypodynamic birds which were kept in an area which made 1/4 of the control, 2) birds exposed to an increased weight load, 3) birds exposed to 3g. and 4) control birds. the experimental birds were exposed to the above treatment for 1 to 6 hours a day during 8 days. the birds were fed on a forced basis to eliminate differences in food intake. the activity of glutamate dehydro ... | 2007 | 839707 |
| angiotensin and water intake in the japanese quail (conturnix coturnix japonica). | 1977 | 852661 | |
| metabolism of 25-hydroxycholecalciferol in japanese quail in relation to reproduction. | 1977 | 853266 | |
| isolation and separation of inositol 1-phosphate, cyclic inositol 1,2-phosphate, and glycerylphosphoinositol from tissue culture cells labeled with [3h]inositol. | water-soluble phosphorylated inositol derivatives have been separated from each other and from inositol by ion exchange and by thin-layer chromatography. the method, in combination with radioactive labeling, is sensitive enough to be applied to single tissue culture dishes corresponding to 10(6) - 10(7) cells. with this technique glycerylphosphoinositol, inositol 1-phosphate, cyclic inositol 1,2-phosphate, and at least three other inositol labeled compounds can be detected in human, monkey, hams ... | 1977 | 856711 |
| androgen influence on mating behavior in selected lines of japanese quail. | 1977 | 863398 | |
| demasculinization of male japanese quail by prenatal estrogen treatment. | 1977 | 863403 | |
| influence of reproductive status on in-vitro renal production of 1,24,25-trihydoxyvitamin d3 in japanese quail. | 1977 | 864644 | |
| effect of dietary dl-ethionine on egg laying and activities of cytoplasmic and mitochondrial l-glycerol 3-phosphate dehydrogenases in liver and kidney of japanese quail, coturnix coturnix japonica. | the effect of dietary dl-ethionine on egg laying and activities of succinate dehydrogenases, cytoplasmic and mitochondrial l-glycerol 3-phosphate dehydrogenases, in liver and kidney of japanese quail, coturnix coturnix japonica was investigated. when quail at full laying were fed a diet supplemented with dl-ethionine at 0.05%, 0.10%, 0.15% and 0.30% (w/w), respectively, apparent dl-ethionine concentration dependent inhibitions of egg laying rate, weights of ovary and oviduct, and egg weight were ... | 1977 | 870646 |
| antibody responses to xenogeneic red blood cell challenge in the japanese quail. | previous reports indicate that japanese quail are hyporesponsive to such conventionally used antigens as sheep red blood cells and bovine serum albumin. in this study the immune responsiveness of japanese quail to several erythrocyte antigens was investigated. the quail produced higher antibody titers when immunized with chukar red blood cells than when immunized with sheep, turkey, or pheasant red blood cells. it is concluded that japanese quail are capable of producing ha titers comparable in ... | 1977 | 885581 |
| effects of obesity induced by overfeeding on body temperature, the testis and plasma testosterone of the male japanese quail. | male japanese quail, force-fed for 4 weeks, showed a marked increase in weight resulting mainly from the deposition of fat. 2. obesity, induced by forced feeding, was accompanied by increases in colonic temperature (about 0-3 degrees c), peripheral leg temperature (about 3 degrees c) and by a decrease of the mid-scapular skin temperature (about 0-6 degrees c). 3. testicular weight decreased by 30% during the period of overfeeding and the spermatozoa concentration in the testis and ducti deferent ... | 1977 | 890516 |
| humoral immunity of japanese quail subjected to microwave radiation during embryogeny. | 1977 | 893100 | |
| binomial assessment of behavioral-phenotypic variations: constancy of choices, trial effects, and social interaction effects in mass-screened color preferences of quail chicks (coturnix coturnix japonica). | individual variations in repeated approach choices between colors by quail chicks were efficiently and reliably identified by methods of binary mass screening and binomial assessment. choices between a pair of identical white stimuli showed only random variations, which indicated that position habit, systematic alternation, and extraneous stimulus factors did not influence performances. choices between blue and red colors showed significant individual variations, which were free of influences fr ... | 1977 | 893748 |
| natural selection for an intermediate level of heterozygote activity in japanese quail. | latter's hypothesis of a molecular explanation of the advantage of heterozygotes is based on the intermediate character of such phenotypes. under particular environmental conditions the efficiency of heterozygotes might clearly be superior to that of wild-type individuals. this hypothesis is illustrated by two examples of egg-white proteins in quail. | 2010 | 893995 |
| exposure of japanese quail embryos to 2.45-ghz microwave radiation during development. | 1977 | 897073 | |
| the embryonic development of theproctodeal gland of coturnix coturnix japonica (aves). | the embryogenesis of the proctodeal gland and development of the connective tissue of the associated lamina propria in the dorsal wall of the proctodeum of common coturnix (coturnix c. japonica) were studied on embryos collected at 12-hour intervals from day 7 of incubation through hatching. gland development began at 9.5 days from ectodermal-derived epithelial buds developing in the craniolateral region of the dorsal proctodeal epithelium. at 11 days, the epithelial buds had become solid convol ... | 1977 | 900523 |
| evaluation of control populations: body weight and rate of gain in japanese quail. | 1. two control populations of quail of different origin were maintained by cyclical mating, one for 4 and the other for 6 generations. means, heritabilities, genetic and phenotypic correlations of body weights at 1, 14 and 35 d and rates of gain from 1 to 14 d and from 14 to 35 d did not show any trend of change with generation. 2. the variability between generations was greater in the characters having intermediate and lower values of heritability, genetic and phenotypic correlations than in th ... | 1977 | 902132 |
| heart rate response to light in the embryo of the japanese quail (coturnix coturnix). | the effects of exposure to light were investigated during and shortly after the period of light stimulation. a particular objective was to evaluated any responses to the type of illumination conditions generally used for observation of avian embryos. twenty 16-day japanese quail embryos were illuminated for 15 minutes each during a total recording period of 55 minutes. heart rate, respiration rate and an approximate measure of activity were recorded. mean heart rate was found to be higher during ... | 1977 | 908914 |
| suppression of pineal multiunit response to flash after habenular lesion in quail. | habenular nuclei were completely destroyed in male photostimulated and nonphotostimulated quail (coturnix coturnix japonica). lesion of the nuclei habenulae led to a markedly increased pineal multiunit activity (mua) pattern in both long and short daily photoperiods compared to control values. intact, as well as habenular lesioned birds, showed a lower level of pineal mua under long-day rearing than under short-day rearing. the decrease in pineal firing rates found in controls under repetitive f ... | 1977 | 910942 |
| excess iodide and the accumulation of 125i by the thyroid, plasma and developing oocytes of the japanese quail. | 1. developing oocytes of the japanese quail accumulated 0-44 microgram of each 1 microgram of 125i-labelled iodide after intra-muscular injection of doses up to 500 microgram iodide as nai but only 0-007 microgram after injection of more than this: the abrupt change in the rate of accumulation was attributed to saturation of the iodide transport mechanism. 2. the proportion of available iodide transferred into the oocytes appeared to be more dependent on the amount of iodide injected and the tot ... | 1977 | 912468 |
| lithium induction of premature oviposition by the japanese quail. | 1. the intramuscular injection of licl into laying japanese quail 6 or 12 h subsequent to an oviposition induced early oviposition of the next egg. 2. the shells of eggs from li-treated birds were without speckling and weighed half or less as much as shells from na-treated birds. many eggs were also deficient in albumen. | 1977 | 912469 |
| osteoclast cell-surface changes during the egg-laying cycle in japanese quail. | the medullary bone serves as a source of labile calcium mobilized during calcification of the egg shell in birds. quantitative histological methods demonstrate that the numbers of medullary bone osteoclasts and nuclei per osteoclast remain unchanged during the egg cycle in the japanese quail (coturnix). therefore, cyclic changes in bone resorption cannot be explained by modulations of osteoclasts from and into other bone cells, a mechanism previously suggested for certain species of birds. rathe ... | 1977 | 914893 |
| effects of androgens on the testes of intact and hypophysectomized japanese quail. | 1977 | 924118 | |
| effects of testosterone on spermatogenesis and luteinizing hormone release in japanese quail. | 1977 | 924120 | |
| contribution of gular flutter to evaporative cooling in japanese quail. | oxygen consumption, body temperature (tb), and evaporative water loss (mwe) were determined in intact japanese quail (coturnix coturnix), and in quail in which the hyoid musculature responsible for gular flutter had been surgically transected several days prior to study. abolishing gular flutter reduced total mwe by an average of 20% at air temperatures (ta) above 40 degrees c. treated birds developed a significantly greater degree of hyperthermia during acute heat stress than the controls and, ... | 1976 | 931873 |
| effect of dieldrin and calcium on the performance of adult japanese quail (coturnix coturnix japonica). | two experiments were conducted to determine the effects of dieldrin and calcium on reproductive performance of quail. at 25% egg production the quail received diets containing 0,10 or 25 p.p.m. of dieldrin for 6, 28-day periods in experiment 1 and 0, 5, or 25 p.p.m. of dieldrin for 4, 28-day periods in experiment 2. pesticide treatments were employed with diets containing 0.5% and 3.0% calcium. the results show that egg shell thickness, cracked eggs, egg production, feed consumption, egg weights ... | 1976 | 934984 |
| the effect of dietary selenium level on lead toxicity in the japanese quail. | previous studies (parizek et al., 1969) have shown significant interactions between selenium and certain heavy metals, particularly mercury and cadmium. since these elements have an affinity for sulfhydryl groups, it was proposed that a similar interaction might exist with lead. in an initial experiment, adult quail hens were given diets supplemented with 0 and 1 p.p.m. selenium and 0, 500 and 1000 p.p.m. lead in a 2 x 3 factorial arrangement. after 32 days of feeding, body weight, liver weight ... | 1976 | 934997 |
| magnesium deficiency, requirement and toxicity in the young japanese quail. | studies of magnesium deficiency, requirement and toxicity in the young japanese quail (coturnix coturnix japonica) were conducted. day-old birds were fed an adequate purified diet containing 35% soy protein to 2 weeks of age. residual magnesium in the diet without any added magnesium salts was 21 p.p.m. magnesium was supplied by graded amounts of mgso4 to a total of 11 levels ranging from 125 to 2,000 p.p.m. deficiency signs included poor growth, and occasionally excitability, gasping and convul ... | 1976 | 934998 |
| acute oral ochratoxicosis in day-old white leghorns, turkeys and japanese quail. | the comparative acute, oral toxicity of ochratoxin a for three day-old avian species is presented. the seven-day ld50 value for white leghorns was calculated to be 3.4 +/-0.19 mgm./kg., for turkeys to be 5.9 +/- 0.72 mgm./kg., and for japanese quail to be 16.5 +/- 0.56 mgm./kg., body weight. the dose-response curves are linear and parallel through one standard deviation on either side of the ld50 when log-dose is plotted against probit for survivors. it is suggested that the mechanism of action ... | 1976 | 935032 |
| vitamin d metabolism: physiological regulation in egg-laying japanese quail. | homogenates of kidney removed from reproductivity active female japanese quail were incubated with tritiated 25-hydroxyvitamin d3, and the metabolites were extracted and identified by chromatographic methods. kidneys removed from birds with and without an egg in the oviduct revealed that ovulation results in enhanced production of 1, 25-dihydroxyvitamin d3, the active hormonal form of vitamin d3. further examination of this phenomenon in relation to the ovulatory cycle revealed that 1, 25-dihydr ... | 1976 | 937550 |
| ferrihemoglobin formation by monohydroxy aniline derivatives in erythrocytes of some avian species in comparison with mammals. | ferrihemoglobin formation nitrosobenzene and p-, m- and o-animophenol was studied in erythrocyte supspensions from a number of avian and mammalian species. compared with the mammalian erythrocytes, bird red cells show little species differences in susceptibility. in birds, dose-effect relationship are different for nitrosobenzene and the aminophenols: using low concentration nitrosobenzene is more active than the aminophenols, while at higher concentrations o-aminophenol is at least equally effe ... | 1976 | 940603 |
| [age-specific learning ability in japanese quails (coturnix coturnix japonica)]. | the main question of our investigation is: do there exist age-specific learning abilities in animals? 120 quails (coturnix coturnix japonica) of 12 different age groups (between one day and 20 weeks) were tested in a combination apparatus 0y using two training methods. 60 quails were trained with decreasing (1), 60 other quails with increasing learning assistance (2). in each case the learning period lasted 5 days after which the animals were tested in a two-way choice apparatus and in a simple ... | 1976 | 942637 |
| incorporation of tritiated uridine during pachytene and diplotene stages in the oocytes of the japanese quail (coturnix coturnix japonica). | incorporation of 3h-uridine was studied during pachytene and diplotene stages of quail oocytes. no labelling could be detected during early pachytene. during advanced and late pachytene, labelling simultaneously appeared on the macrochromosomes and on certain michromosomes in the zone where they emerge from the chromocentric surface periphery. the latter localization corresponds to the region of ribosomal rna synthesis. at diplotene the same localizations were labelled with a considerably increa ... | 1976 | 942928 |
| induction of parental behavior in japanese quail (coturnix coturnix japonica). | the japanese quail is a precocial species, and because of its relatively rapid development, sexual maturation in about 40 days after hatching, and prolific breeding capacity, it promises to become an organism well suited for avian research. one stumbling block has been the inability to induce, with any consistency, parental behavior in laboratory stocks. the study reported herein demonstrates a method for establishing a self-perpetuating population under seminaturalistic conditions. in addition, ... | 1976 | 945304 |
| fungus-fermented soybeans benefit the life cycle of japanese quail (coturnix coturnix japonica). | feeding quail chicks diets containing soybeans fermented with two cultures of aspergilli (a. oryzae n.r.r.l. 451 and a. oryzae n.r.r.l. 506) resulted in significantly superior weight gains (p less than 0.05) through a 4-week growth period and confirmed previous observations made with identical cultures in broiler studies. subsequent hen-day egg production and egg size were changed little by diets containing fermented soybeans. the numerical increases in fertility and hatchability were not signif ... | 1976 | 945574 |
| comparative effects of niridazole on spermatogenesis and reproductive capacity in the mouse, rat and japanese quail. | niridazole is an effective schistosomicidal compound which, at lower dose levels, affects schistosome gonads. its antifertility and possible mutagenic effects after various courses of oral treatment were compared in mice, rats and japanese quail (coturnix coturnix japonica). in all three species the meiotic stage of spermatogenesis was particularly affected. in mice the highest dose rate (five daily doses of 100 mg/kg) produced sterility during the 4th week. rats were more susceptible, the compo ... | 1976 | 946818 |
| effect of photoperiod upon age and maintenance of sexual development in female coturnix coturnix japonica. | coturnix kept in a 14l:10d photoperiod from hatch began to lay their first eggs at a mean age of 42.8 days (range 38-55). approximately 2/3 of coturnix held from hatch in photoperiods of 6l:16d light were laying at 165 days of age. mean age at first egg was 112.7 days (range 68-162 days) in 8l:16d and 130.8 days (range 117-158 days) in 6l:18d photoperiod. coturnix transferred from a non-stimulatory (8l:16d) photoperiod to a stimulatory one (14l:10d or 24l) begun laying in 15-20 days if less than ... | 1976 | 951357 |
| genetic parameters of organ and body weights in the japanese quail. | heritability values were estimated for the weights of various internal organs and correlations among the organ weights were calculated using 279 male and 305 female birds of japanese quail. the organs measured were heart, lungs, liver, gizzard, intestines, pancreas, spleen, kidneys, gonads, oviduct, muscles, and bones; total body weight was also recorded. the heritabilities for these internal organs ranged from 78 percent for bones to 17 percent for intestines, and showed no marked differences b ... | 1976 | 951359 |
| studies on the sodium requirement of growing japanese quail. | the response of japanese quail, fed a purified diet, to dietary increments of sodium chloride was studied. birds fed the basal diet (0.042-0.051% sodium) displayed poor growth, high mortality, depressed plasma sodium levels, elevated blood hematocrit and increased relative adrenal gland weights. growth plateaued and the other parameters reached normal values at a total dietary sodium level of approximately 0.10 percent. | 1976 | 951367 |
| sexual maturation and productivity of japanese quail fed graded concentrations of mercuric chloride. | japanese quail (coturnix c. japonica) were fed 0, 2, 4, 8, 16, and 32 p.p.m. hg as mercuric chloride (hgcl2) from the time of hatching up to the age of 1 year. none of the birds manifested any gross signs of mercury poisioning. food consumption, growth rate, and weight maintenance were unaffected. initial oviposition tended to occur at a younger age as dietary mercuric chloride increased, e.g., the median age at which egg laying began among hens fed 32 p.p.m. hg was 6 days younger than for contr ... | 1976 | 951373 |
| growth of broilers and quail fed fusarium (gibberella zeae)-infected corn and zearalenone (f-2). | there were no effects in commercial broilers after the long term ingesting of fusarium-infected corn supplying 1, 10, and 30 p.p.m. zearalenone (f-2) in diets. average gain and feed conversion were similar in all treatment groups. in the first feeding trial the average body weights were higher for males than for females, but the differences were not significant. purified f-2, 30 p.p.m., was fed to broilers and no chronic effects were observed. differences in mean body weights, between dietary tr ... | 1976 | 951378 |
| effects of follicle stimulating hormone and luteinizing hormone on the incorporation of 32p into the testis of the immature japanese quail. | 1976 | 955400 | |
| auditory stimulation of coturnix embryos coturnix coturnix japonica and its later effect on auditory preferences. | 1976 | 962774 | |
| inheritance of body weight and rate of gain in japanese quail. | the effects of hatch date, location and sex on the body weight and rate of gain in coturnix coturnix japonica were examined. 2. the data conformed to a mixed and adjustments were made for the fixed effects sex, hatch date and location. adjustment improved the precision of the estimates by reducing the error variances significantly. 3. rearing equal numbers of birds from each family at different locations made the interactions negligible. 4. weight gain was greater if illumination intensity up to ... | 1976 | 963569 |
| the half-life of luteinizing hormone in intact and castrated quail during photoperiodic stimulation. | in the japanese quail (coturnix coturnix japonica) the plasma concentration of luteinizing hormone (lh) depends on the physiological state of the animal. low levels are found in sexually immature birds on short days (0.8 +/- 0.1 (n = 20) ng/ml) while after exposure to long days, sexually mature birds have a significantly higher lh level (4.4 +/- 0.4 (n = 20) ng/ml). castration of long day males results in an even higher rise in lh concentration to 16.8 +/- 1.8 (n = 16) ng/ml. when the half-life ... | 1976 | 964208 |
| genetic analysis of tonic immobility in young japanese quail (coturnix coturnix japonica). | 1976 | 964440 | |
| the relative effectiveness of an inanimate stimulus and a live surrogate during imprinting in japanese quail, coturnix coturnix japonica. | 1976 | 964445 | |
| genetic analysis of behaviors related to the solution of a detour learning task. | a diallel cross involving five noninbred (purebred) lines of japanese quail indicated that additive and nonadditive genetic effects had important influences on behaviors involved in a detour learning task. social isolation for 3 hr was used to provide additional motivation which enabled detection of differences among strains. the percentage of quail, within purebred lines, that solved a 4-min detour task three or more consecutive times ranged from 52 to 72. differences among purebreds were signi ... | 1976 | 973829 |
| [germinal population of gonads in some chimerical embryos obtained by connecting pieces of japanese quail and domestic chick blastoderms (author's transl)]. | the experimental realization of chemerical embryos (martin's13 technic) permits a quantitative appreciation of the modalities of the colonization of quail gonads by chick germ cells. results clearly show that nature and origin of the somatic part of the gonad areas settle the characters of the genital ridges populating, and specially the specific index of asymmetry expressed by the percentage of pgc colonizing the right gonad. | 1976 | 976456 |
| origin of ovarian follicle cells in birds. | in the embryonic japanese quail ovary, transplanted on chicken chorioallantoic membrane (cam), follicle cells are derived from somatic cells of the ovarian surface epithelium. no evidence was found for a contribution of other cell groups of the quail ovary in the formation of follicle cells. this may be demonstrated on pas stained sections, by following the transfer of carbon particles, initially applied on the surface epithelium. | 1976 | 976457 |
| prenatal experience and avian development: brief auditory stimulation accelerates the hatching of japanese quail. | a single 2-hour exposure to auditory stimulation at any point during the final 3 days of incubation accelerates the hatching of japanese quail. the 3-day sensitive period includes both prenatal and perinatal stages of incubation. so far as is known these results provide the first unequivocal evidence that short-term prenatal sensory stimulation can affect the development of an avian embryo. | 1976 | 982054 |
| an electron microscopic study on 203 hg transport in the ovarian tissue of laying japanese quail. | 1976 | 985989 | |
| increased retention of inorganic mercury caused by selenite and selenate in japanese quail. | 1976 | 988412 | |
| ultrastructure of the organum vasculosum of the lamina terminalis of the japanese quail, coturnix coturnix japonica. | the structure of the organum vasculosum of the lamina terminalis (ovlt) of the japanese quail has been studied by light and electron microscopy. the ovlt has a palisade arrangement. it forms a part of the terminal plate extending from the optic chiasma to the anterior commissure and is characterized by a special vascular arrangement. the organ consists of ependymal, internal and external zones. the ventricular surface of the organ is covered by non-ciliated ependymal cells characterized by the p ... | 1976 | 991207 |
| penetration of melanocytes from embryonic japanese quail peritoneum into associated embryonic avian gonads, grown on chicken chorioallantoic membrane. | after association on chorioallantoic membrane (cam) of an embryonic bird testis with pigmented peritoneum from a japanese quail embryo, numerous melanocytes penetrate in its interstitial tissue. if, instead of a testis, an ovary is transplanted under similar conditions, then the melanocytes may be found in the medulla or between the secondary sex cords at the rim of the ovary. | 1976 | 991998 |
| on the retinal mediation of genetic influences in color preferences of japanese quail. | the hypothesis that the pigmentation of retinal oil droplets is the morphological target of genetically induced change in the early color preferences of the japanese quail (c. coturnix japonica) was examined and rejected. subjects were drawn from the fourth generation of genetic selection for preferences between blue and red, and they were compared according to genetic lines of origin and the presence or absence of pigmentation in their retinal oil droplets. pigmentation was manipulated by raisi ... | 1976 | 993392 |
| effect of dietary lead on reproductive performance in japanese quail, coturnix coturnix japonica. | 1976 | 996861 | |
| genetic variation of pancreatic esterase isozyme in japanese quail. | a genetic variation was found in pancreatic esterases of japanese quail which appeared to be arylesterase. it was found on the cathode side in the agar gel electrophoresis. three phenotypes, a,b and ab, were observed. these phenotypes were shown to be controlled by one autosomal locus, designated as es-4, with co-dominant alleles es-4a and es-4b. es-4 esterase isozymes were detected in all the individuals from about 4 days of age, but the activity was very weak. however, it gradually increased t ... | 1976 | 999053 |
| mirex-induced hepatic changes in chickens, japanese quail, and rats. | mirex was fed in the diet to chickens at 0 to 160 ppm for 12 and 16 weeks, to japanese quail at 0 to 80 ppm for 12 weeks, and to rats at 0 to 100 ppm for 2 and 4 weeks. mirex did not affect the concentration of protein or cytochrome p450 in hepatic microsomes of chickens or japanese quail, nor did it affect hydroxylation of aniline or demethylation of aminopyrine. however, structural changes were apparent in livers of chickens fed mirex at 10 ppm and above and included regions of necrosis and no ... | 1976 | 999336 |
| effects of dietary dilution with fibre on the food intake and gut dimensions of japanese quail. | japanese quail (coturnix coturnix japonica) were fed on either a conventional diet (low-fibre) or the same diet diluted with 200 g oak sawdust/kg (high-fibre). the lengths of the colo-rectum, small intestine, two caeca combined and empty gizzard weight were measured at 10 and 20 weeks of age. food intake and rate of passage were measured and an approximate measure of digestibility was also made. 2. there were separate effects of dietary fibre, sex and age on gut size. it was larger in birds fed ... | 1976 | 1000323 |
| changes in food intake and gut size in japanese quail in response to manipulation of dietary fibre content. | adult japanese quail (coturnix coturnix japonica) which had been fed, since hatching, on either a conventional diet (low-fibre) or on the same diet diluted with 200 g oak sawdust/kg (high-fibre) took 8 to 10 d to adjust their food intake when their diets were interchanged. 2. those fed on high-fibre weighed less than those fed on low-fibre diet, and body weight changed rapidly when the diets were interchanged. all the birds digested about the same weight of nutrients in a day, irrespective of di ... | 1976 | 1000324 |