| effects of ddt, polychlorinated biphenyls and thiouracil on circulating thyroid hormones, thyroid histology and eggshell quality in japanese quail (coturnix coturnix japonica). | | 1982 | 6817931 |
| divergent selection for body weight and yolk precursor in coturnix coturnix japonica. 3. correlated responses in mortality, reproduction traits, and adult body weight. | egg production, mature body weight, egg weight, yolk weight, fertility, hatchability, and mortality during the early growing period were compared in strains of japanese quail. the strains were either a randombred control (r1) that served as the base population or strains divergently selected for high (hw) or low (lw) 4-week body weight or high (hp) or low (lp) plasma phosphorus (yolk precursor) early in the laying period. changes in 4-week body weight in hw and lw were associated with correspond ... | 1982 | 7163098 |
| atherosclerosis in cholesterol-fed japanese quail: evidence for amelioration by dietary vitamin e. | three experiments were conducted with adult, male japanese quail (coturnix coturnix japonica) from 5 through 14 weeks of age. in experiment 1, quail fed a cholesterol-free diet were compared with quail fed .5% of united states pharmacopoeias (usp), recrystallized (rcr), or oxidized (oxi) cholesterol preparations. in experiment 2, .5% oxi cholesterol was fed alone and with .1% butylated hydroxytoluene (bht) or 100 mg d-alpha-tocopherol acetate/kg of diet and compared with .5% rcr cholesterol. exp ... | 1982 | 7178001 |
| aspects of "fear" in japanese quail chicks (coturnix coturnix japonica) genetically selected for different levels of locomotor activity. | domestic chicks selected for high and low locomotor activity in a novel environment have low and high levels of fearfulness, respectively. using four commonly employed methods of estimating fear, namely emergence, open-field, response to a bell and tonic immobility tests, we found a similar effect in lines of japanese quail selected for high and low locomotor activity, i.e. the active line appeared the least fearful. the present findings demonstrate that this effect is common to two gallinaceous ... | 1982 | 24923180 |
| [comparative study of the effect of glucocorticoids on nitrogen metabolism in adult male and non-laying female quail (coturnix coturnix japonica)]. | the effects of glucocorticoids on nitrogen metabolism have been studied in three different groups of quail: a) control animals; b) quail treated with cortisol; c) quail treated with corticosterone. all the experiments were carried out in adult male and non-laying female animals. during the 7 day period that the experiments lasted, hormones were administered daily by via oral at 4 mg/100 g body weight/7 day doses. while body weight, food intake, nitrogen balance and liver weight, in the treated a ... | 1982 | 7156453 |
| effects of sulfaguanidine and amino acid imbalances on the induction of niacin deficiency in mature and immature japanese quail (coturnix coturnix japonica). | effects of sulfaguanidine, leucine, or leucine plus isoleucine in a niacin free diet on body weight changes, liver weight, pyridine nucleotide concentrations, and activities of enzymes in mature female or immature japanese quail were measured. the inclusion of .5% of sulfaguanidine or a high level of leucine in a niacin free diet had no influence during an 8-week period on liver pyridine nucleotide levels and the development of niacin deficiency symptoms in mature female quail. this would sugges ... | 1982 | 7134112 |
| [the effect of water soluble trichloromonofluoromethane freon on the weight and proteins of the heart muscle in japanese quail]. | an experiment was conducted to study the effects of water-soluble trichloromonofluoromethane freon (f-11, cc13f) on the weight of heart and on the level of freely extractable proteins in the heart of japanese quail (coturnix coturnix japonica). after three-week sublethal exposure of japanese quail to the effect of freon the heart weight of the tested birds was found to have markedly decreased (however, the total body weight of the birds did not decrease). the tested quail also showed pronounced ... | 1982 | 6803425 |
| decreased synaptic areas on purkinje spines in the cerebellar cortex of the mutant japanese quail, coturnix coturnix japonica. | 'dark frayed feather nervous disorder' (dn) is a neurological mutation in quails in which the cerebellar cortex is abnormally organized. purkinje cells are not aligned in a single row and show hypoplasia of the dendrites. the synapses between the parallel fibers and the spines of the purkinje cell dendrites were examined with the technique of serial sections in electron microscopy. the postsynaptic thickenings were obviously decreased in the mutant quail despite the same density and size of dend ... | 1982 | 7055694 |
| postnatal growth and organ development in the quail (coturnix coturnix japonica). | in a previous study it has been shown that the pattern of organ growth of the goose, a species with a high growth rate factor, is characterized by a rapid early development of the digestive organs and the liver. the present study describes the postnatal growth and the pattern of organ development of the quail, a species with a low growth rate factor. the results show that the pattern of organ growth is characterized by a rapid early development of the wings, pectorals and feathers. these results ... | 1982 | 7173707 |
| genetic variation in a population of the wild quail coturnix coturnix japonica. | to investigate genetic variation and to compare it with those of domestic quail populations, enzymatic and non-enzymatic proteins in a wild quail population were examined electrophoretically. the wild quail population had a genetic variability considerably lower than those of domestic populations. the average heterozygosity estimated for 22 loci was 0.090 in the wild quail population. | 1982 | 7149337 |
| divergent selection for body weight and yolk precursor in coturnix coturnix japonica. 2. correlated responses in plasma lipoproteins and lipids. | lipoproteins from generations five and six of japanese quail (coturnix coturnix japonica) divergently selected for increased (hw) or decreased (lw) body weight at 4 weeks of age or increased (hp) or decreased (lp) plasma yolk precursor at the initiation of egg production were separated into fractions of d less than 1.006 and d greater than 1.006. a randombred control (r1) was also sampled. total lipids (tl), neutral lipids (nl), and phospholipids (pl) were determined. the nl's of the d less than ... | 1982 | 7088780 |
| an analysis of satellite cell content in the semimembranosus muscle of japanese quail (coturnix coturnix japonica) selected for rapid growth. | transverse sections of the semimembranosus muscle of a control (c) line of japanese quail and of a line (p) selected for high body weight at 4 weeks of age were observed for nuclear content. the two lines were sampled at 4 days posthatching and at 4 weeks of age. the relative number of satellite cells decreased from 4 days to 4 weeks of age. the total number of satellite cells, however, appeared to increase as muscle length increased; this relation was not influenced by line effects. it was conc ... | 1982 | 7080801 |
| [toxicity and certain physiopathologic effects of 2,4,5-trichlorophenoxyacetic acid, an organo-chlorine herbicide, in the adult domestic quail (coturnix coturnix japonica)]. | the effects of 2,4,5-t on adult japanese quail have been studied. the herbicide was administered daily in oral dosages at level of 100 mg/kg per day for two weeks (five days a week). in these experimental conditions, this compound was moderately toxic, the rate of mortality was low. however, we noticed a significant reduction in food consumption, body weight and egg production. the physiological disturbances resulting from the toxicological treatment are reversible. | 1982 | 6217874 |
| the energy costs of temperature regulation in birds: the influence of quick sinusoidal temperature fluctuations on the gaseous metabolism of the japanese quail (coturnix coturnix japonica). | 1. quick sinusoidal temperature fluctuations (constant average 10 degrees c) cause an increase in metabolism in comparison to an invariable constant ambient temperature of the same dimension. 2. at the observed mean value of 10 degrees c metabolism is increased by 0.8% per 1 k/hr based on the values of resting metabolic rate (correlation: m = 53.5 + 0.445 ta, m in j/k g hr, ta = ambient temperature change in k/hr) and 0.6% based on the values of activity metabolism (m = 70.4 + 0.425 ta). 3. the ... | 1982 | 6120786 |
| distribution and elimination of hexachlorobenzene (hcb) after single oral exposure in japanese quail (coturnix coturnix japonica). | the distribution and excretion of hexachlorobenzene (hcb) after administration to quails of a single oral dose of 4.5 microci [14c] hcb per 100 g body weight was studied by whole-body autoradiography and liquid scintillation counting. radiolabeled hcb was distributed throughout the body in 2 h. peak levels were found 4-8 d after administration, with the highest concentrations in the subcutaneous and abdominal fat, uropygial gland, bone marrow, adrenals, ovarian stroma, and liver, in that order. ... | 2013 | 7338946 |
| histochemistry of uterovaginal sperm-host glands in japanese quail (coturnix coturnix japonica) with reference to the period of oviposition. | general histochemistry of uterovaginal sperm-host glands (shg) of japanese quail was examined in virgin and naturally mated hens and during oviposition in artificially inseminated hens. the shg tissues were stained for complex carbohydrates with periodic acid - schiff (pas); for lipids with oil red o (oro); and for acid phosphatase (ap) with as-tr phosphate substrate. typically, pas material was absent from shg cells, shg showed preferential uptake of oro, and the stain was seen as discrete drop ... | 1981 | 7199147 |
| the regulation of 25-hydroxycholecalciferol metabolism in the kidney of japanese quail (coturnix coturnix japonica) by sex hormones and by parathyroid extract. | | 1981 | 6973503 |
| failure to induce incubation behavior with estradiol and prolactin and hormonal induction of brood patches in japanese quail (coturnix coturnix japonica). | | 1981 | 7286622 |
| carbamate poisoning. effects of selected carbamate pesticides on plasma enzymes and brain esterases of japanese quail (coturnix coturnix japonica). | | 2006 | 7276383 |
| organophosphate poisoning. effects of selected organophosphate pesticides on plasma enzymes and brain esterases of japanese quail (coturnix coturnix japonica). | | 2006 | 7276382 |
| toxic effects of acrylamide in japanese quail (coturnix coturnix japonica). | | 1981 | 7265318 |
| [tolerance of mebendazole, fenbendazole, thiabendazole, cambendazole and febantel in relation to egg-laying capacity, egg quality, fertility and hatch rate of quail (coturnix coturnix japonica)]. | | 1981 | 6895027 |
| sites and action spectra for encephalic photoreception in the japanese quail. | sexually mature japanese quail, coturnix coturnix japonica, were transferred to short environmental photoperiod for 20 days, during which they received encephalic illumination via surgically implanted optic fibers. white light delivered to discrete sites in the basal hypothalamus induced photogonadal response for testicular maintenance. there was also a strong positive response to monochromatic red, green, or blue light delivered to these areas, and this response was of equal magnitude regardles ... | 1981 | 7212094 |
| [effect of fasting on the main blood and liver metabolites of gluconeogenesis and ketogenesis in the adult domestic quail (coturnix coturnix japonica)]. | the changes in the main plasma and liver metabolites of gluconeogenesis and ketogenesis have been studied in quails during 72-hr starvation. in those conditions, glycaemia barely decreased, whereas liver glycogen and plasma and liver lactate dropped, suggesting that lactate was utilized extensively for gluconeogenesis. in contrast, plasma alanine decreased only slightly. during starvation, plasma free fatty acids and cholesterol were significantly enhanced, whereas plasma triglycerides decreased ... | 1981 | 7349537 |
| teratological examination of agricultural pesticides on japanese quail (coturnix coturnix japonica) eggs. | | 1981 | 7342740 |
| humoral and cell-mediated immune function in adult japanese quail following exposure to 2.45-ghz microwave radiation during embryogeny. | japanese quail, coturnix coturnix japonica, eggs were subjected to 2.45-ghz cw microwave radiation at 5 mw/cm2 (sar = 4.03 mw/g) during the first 12 days of embryogeny. following hatching the exposed embryos, as well as nonexposed controls, were reared to 22 weeks of age. humoral immune potential, as indicated by comparable anti-crbc antibody, igm and igg, levels at 0, 4, and 7 days postimmunization in both exposed and control quail was not affected significantly. however, cell-mediated immune p ... | 1981 | 7306223 |
| [electron microscopic studies of striated muscles of the japanese quail (coturnix coturnix japonica) obtained from eggs centrifuged during incubation]. | reported in this paper are results obtained from investigations into the effect of hypergravitation on embryogenesis of striped muscles in japanese quail. specimens of striped muscles were excised from the birds after hatching and used in the study. the eggs had been centrifuged on zero day as well as on the first and 15th days of incubation. the muscle fibrils were found to proliferate in all groups, that is the control group, the group with centrifugation on zero day, and that with centrifugat ... | 1981 | 7283640 |
| normal eeg of the restrained twenty-four-hour-old japanese quail (coturnix coturnix japonica). | a new method for obtaining bipolar electroencephalographic (eeg) recordings from day-old japanese quail (coturnix coturnix japonica) is described. the electrodes are chronically placed stainless steel suture wires sewn into the skull and secured with dental acrylic. using this arrangement, recordings were made over the hyperstriatum accessorum and dorsoarchistriatum regions of the brain. these records showed a preponderance of high amplitude slow waves. transitions to low amplitude fast waves we ... | 1981 | 7232267 |
| immunocytochemical localization of neurotensin-containing neurons in the hypothalamus of the japanese quail, coturnix coturnix japonica. | the hypothalamus of japanese quail, coturnix coturnix japonica, has been studied by means of the peroxidase-antiperoxidase immunocytochemical method, with the use of antibodies to synthetic neurotensin (nt). a number of immunoreactive neuronal perikarya occur in the medial preoptic nucleus of the rostral hypothalamus and a few in the accessory part of paraventricular nucleus and dorsal portion of the infundibular nucleus. some of them correspond to the parvocellular neurons previously identified ... | 1981 | 7018692 |
| the effect of adrenal glands on ovulation in japanese quail (coturnix coturnix japonica). | adrenal involvement in ovulation has been demonstrated for several mammalian species and has recently come under scrutiny in birds. complete adrenalectomy causes severe system imbalances; therefore, it was decided to evaluate the effect of unilateral adrenalectomy on ovulation in coturnix. since no mortality occurred among 59 hens recovering from anesthesia following hemiadrenalectomy, systemic imbalances appeared to be tolerable. hen-day egg production of adrenalectomized hens was significantly ... | 1980 | 7196579 |
| [the effect of the herbicide dinoseb-acetate (aretit) on transaminase (got, gpt) activity in the blood serum and muscles of the japanese quail (coturnix coturnix japonica)]. | an experiment was undertaken to study the effect of the dinoseb-acetate (aretit) herbicide, administered in drinking water at a concentration of 100 and 200 mg x 1(-1) for four days, on the activity of transaminases (got and gpt) in the blood serum and muscle of the japanese quail (coturnix coturnix japonica). got had higher activity values in the blood serum and muscle of the control and test birds, as compared with gpt. the herbicide increases got activity in the blood serum, whereas the gpt v ... | 1980 | 6777953 |
| changes in plasma concentrations of thyroxine binding prealbumin and retinol binding protein in japanese quail after hatching. | 1. male and female japanese quail (coturnix coturnix japonica) were reared under short daily photo-periods (8 h light-16 h dark) to inhibit sexual development with free access to food and water. blood was sampled at frequent intervals for 13 weeks from hatching in order to monitor the developmental changes in plasma concentrations of the two proteins which are important in the transport of retinol, retinol-binding protein (rbp) and thyroxine-binding prealbumin (tbpa). 2. measurements of body-wei ... | 1980 | 6776983 |
| studies on the amino acid and protein requirements of laying japanese quail (coturnix coturnix japonica). | six experiments were conducted to define the amino acid and protein requirements of laying japanese quail. in the initial experiments the diets contained 12% protein from a mixture of casein and soybean meal and were supplemented with essential amino acids and glutamic acid to promote optimum egg production. later studies were conducted with corn-soybean meal diets. results from varying the levels of essential amino acids led to the following estimates of amino acid requirements (as percent of t ... | 1980 | 7433362 |
| participation of the eyes in the photosexual response of japanese quail (coturnix coturnix japonica). | | 1980 | 7417677 |
| an analysis of skeletal muscle response to selection for rapid growth in japanese quail (coturnix coturnix japonica). | a line of japanese quail selected for high body weight at 4 weeks of age (p line) was compared to an unselected control (c) line at 10, 23 and 56 days of age. the increase in the weight of the pectoralis major and supracoracoideus muscles in the p line was paralleled by an increase in total dna, rna and protein content of the muscles when compared to comparable age c line. dna, rna and protein concentrations and rna/dna and protein/dna ratios were similar between lines within age. greater muscle ... | 1980 | 6159255 |
| effect of changing photoperiod on plasma thyroxine-binding prealbumin in japanese quail (coturnix coturnix japonica). | | 1980 | 6773850 |
| changes in the pituitary and plasma lh, plasma and follicular progesterone and estradiol, and plasma testosterone and estrone concentrations during the ovulatory cycle of the quail (coturnix coturnix japonica). | | 1980 | 7419043 |
| somitogenesis in cultured embryos of the japanese quail, coturnix coturnix japonica. | the ability of unsegmented paraxial mesoderm from japanese quail embryos to form somites was studied by culturing pieces of embryos, containing the segmental plates, on an agar medium. in the first experiments, two explants were prepared from each donor embryo. both explants contained a segmental plate and neural tube, but only one contained notochord. the explants containing notochord formed 11.4 +/- 2.1 somites, while the explants without notochord formed 11.1 +/- 1.3 somites. it was concluded ... | 1980 | 7416048 |
| involvement of catecholaminergic mechanisms in the photoperiodically induced rise in serum luteinizing hormone of japanese quail (coturnix coturnix japonica). | | 1980 | 7390138 |
| visual information and approach behavior in genetically manipulated quail chicks: preference hierarchies and interactions of flash rate, flash amplitude, luminance, and color. | visual preferences were studied in 18,225 quail chicks (coturnix coturnix japonica) of three genetic populations, in relation to 185 pairs of systematically varied and combined flash rates, flash amplitudes, luminances, and colors. results indicate additive and nonadditive interactions between preference values of stimulus elements embedded in complex stimulus information. flicker preferences changed with changes in overall stimulus liminances, flash amplitudes, and colors. likewise, color prefe ... | 1980 | 7372852 |
| mendelian units of inheritance control color preferences in quail chicks (coturnix coturnix japonica). | genetic analysis of approach preferences for blue and red colors in 1-day-old, experientially naïve quail, at 12th through 14th generations of bidirectional genetic selection, implicate four to eight segregating units of inheritance. because the quails' initial approach choices are also readily modifiable by experience, these results point the way to studying the mediation of gene effects, environment effects, and gene-environment interactions in visually guided behaviors. | 1980 | 7352267 |
| the neuroendocrine control of gonadotrophin release in the japanese quail. iii. the role of the tuberal and anterior hypothalamus in the control of ovarian development and ovulation. | reproduction in the japanese quail (coturnix coturnix japonica), as in many other species, is controlled by the length of the daily photoperiod. the present experiments have investigated the neuroendocrine regulation of both the photoperiodically induced 'tonic' gonadotrophin secretion, which causes the development and maintenance of the ovary, and the 'cyclic' surge release of luteinizing hormone (lh), which stimulates ovulation. areas within the anterior and tuberal hypothalamus were destroyed ... | 1980 | 6102391 |
| abnormal organization of the cerebellar cortex in the mutant japanese quail, coturnix coturnix japonica. | | 1979 | 497820 |
| response of lipogenic enzymes and plasma lipids to starvation and refeeding in the adult japanese quail (coturnix coturnix japonica). | | 1979 | 41568 |
| the metabolism of cholecalciferol in the liver of japanese quail (coturnix coturnix japonica) with particular reference to the effects of oestrogen. | 1. studies were carried out in vitro with the livers of japanese quail that had been fed from hatching on diets supplying their full requirements for vitamin d. 2. 25-hydroxycholecalciferol was the major metabolite when liver homogenates of egg-laying female and oestrogen-treated quail of both sexes were incubated with [3h]cholecalciferol. 3. very little 25-hydroxycholecalciferol was generated from liver homogenates of adult male and immature quail. instead the cholecalciferol was converted into ... | 1979 | 229826 |
| stereospecific analysis of glycerolipids of egg yolk of japanese quail (coturnix coturnix japonica). | phosphatidylcholine, phosphatidylethanolamine and triacylglycerol were isolated from egg yolk of the japanese quail. fatty acid compositions at the two and three positions of glycerol in the glycerolipids were determined by stereospecific analysis employing phospholipase a2. the distribution of the total number of carbon atoms in the fatty acid moieties of triacylglycerol was also quantitated by high temperature gas liquid chromatography. the distribution of acyl groups in each of the positions ... | 1979 | 575185 |
| cholinesterase activity in japanese quail dusted with carbaryl. | japanese quail (coturnix coturnix japonica) were dusted with 5% carbaryl to determine if this topical treatment would alter plasma and brain cholinesterase activities. within 6 hours after dusting, plasma cholinesterase activity was depressed compared with controls, the depression averaging 20% for females and 27% for males. by 24 hours the cholinesterase activity of females had returned to normal, but the cholinesterase activity of males remained depressed. brain cholinesterase activity was not ... | 1979 | 116071 |
| the influence of the sex-hormone testosterone on body temperature and metabolism of the male japanese quail (coturnix coturnix japonica). | testosterone causes a significant body temperature decrease in male quails. oxygen consumption/g b. wt remains the same, however. | 1979 | 437037 |
| the ontogeny of crowing and copulatory behavior in japanese quail (coturnix coturnix japonica). | the onset and development of sexual behavior were examined in the male japanese quail. sixteen individuals were observed for crowing, tested for mating, and measured for cloacal gland area at 2-day intervals from day 10 to day 60 posthatch. onset of the behaviors occured in a sequence. crowing began at 32.8 days, mating attempts at 34.3 days and mating (cloacal contacts) at 36.9 days. frequencies of each of these behaviors inceased rapidly from the time of onset. the order in the onset of sexual ... | 1979 | 24896389 |
| cholesteremia in japanese quail: response to a mixture of vitamins c and e and choline chloride. | five-week old, male, japanese quail (coturnix coturnix japonica) were given ad libitum access to glucose- soybean meal-10% fat diets containing 0, 0.25, 0.5, or 1% cholesterol, with or without the addition of a vitamin supplement (vitamin c--1 g/kg of diet, vitamin e--30 i.u./kg of diet and choline chloride--5.5 g/kg of diet). after 12 weeks, 9 quail from the 24 quail fed each diet were killed and the total cholesterol concentration of serum, liver, kidney, and aorta was determined. cholesterol ... | 1979 | 539918 |
| blood sampling and intravenous injections in japanese quail (coturnix coturnix japonica). | the suitability of five different sites (brachial, jugular, caudal tibial vein, external dorsal thoracic vein and the heart) were examined for blood sampling and intravenous injections in japanese quail. in terms of safety, ease of collection, repeated collections or injections, the jugular vein was found to be the most suitable. | 1979 | 439844 |
| experimental study on the nervous connections of some diencephalic and mesencephalic nuclei in coturnix coturnix japonica. | this work is carried out by analysing the retrograde and transneuronal retrograde degenerations appeared following a total or partial unilateral removal of the optical lobe, in coturnix coturnix japonica newborn and adult specimens. by means of this technique we are able to contribute new information on the so far unknown nervous relationships between several mesencephalic (io, sp+ips, tp, pt and spl) and diencephalic (spc, dsod, rt, glv, dlamc and la) nuclei and the optical tectum; we also give ... | 1979 | 536587 |
| reproductive responses of quail to bunker c oil fractions. | bunker c fuel oil was extracted with petroleum ether and the concentrated extract was given to breeding japanese quail (coturnix coturnix japonica). a dose of extract equivalent to 300 mg bunker c reduced both egg production and hatchability. fractionation of the extract by absorption on florisil and elution with petroleum ether followed by chloroform yielded fractions that were tested for toxicity. all the fractions had a pronounced effect upon production; however, only the chloroform eluates w ... | 1979 | 485214 |
| effects of light and of testosterone derivatives or antiandrogens on the secretory content of the subcommissural organ of the quail, coturnix coturnix japonica. | photosensitivity of the quail subcommissural organ (sco) is demonstrated. when the birds are submitted to continuous light the sco cells appear depleted in secretory material and the enzyme activities investigated are of greater intensity. such a diminished secretory content is observed in birds exposed to short daylength when they are injected with testosterone derivatives. besides, injections of antiandrogenic compounds in continuously illuminated quails abolish the decrease of the secretory m ... | 1979 | 458434 |
| ultrastructure of the parathyroid gland of the quail, coturnix coturnix japonica. | | 1978 | 750947 |
| 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 |
| 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 |
| parenchymal fine structure of the subfornical organ in the japanese quail, coturnix coturnix japonica. | the parenchyma of the subfornical organ (sfo) of the japanese quail was studied by light and electron microscopy. the sfo consists of ependymal, intermediate, and basal (perimeningeal) layers. in the intermediate layer, neurons, glial cells, and their processes are found. axons containing dense core granules approximately 80 nm in diameter are numerous, some of which make synaptic contact with the neuronal perikarya or dendrites. synaptic vesicles in some axons contain a dense dot in the interio ... | 1978 | 688362 |
| surface fine structure of the subfornical organ in the japanese quail, coturnix coturnix japonica. | the surface ultrastructure of the subfornical organ (sfo) was investigated in the japanese quail. the sfo consists of a body and a stalk. the body of the sfo can be divided into rostral and caudal parts. on the rostral part, each ependymal cell possesses a short central solitary cilium; clustered cilia are also occasionally seen. microvilli are abundant. on the caudal part, cells with a solitary cilium are fewer in number, and clustered cilia are rarely found. microvilli are not as abundant as o ... | 1978 | 688361 |
| a fine structural study of liver (littoral) cells of methylmercury fed japanese quail (coturnix coturnix japonica). | tissues of japanese quails were subjected to electron microscopical study. the birds had received 0-8 ppm methylmercury added to their diets for 6 weeks. the ultrastructural changes in the littoral cells of the liver were swollen mitochondria, with dilatation of the endoplasmic reticulum, loss of ribosomes from the rough endoplasmic reticulum and an increase in the number of vesicles in the cytoplasm. the nuclear membrane in some littoral cells became dilated, and the nuclear chromatin was conde ... | 1978 | 696349 |
| the uterovaginal sperm host glands of the quail (coturnix coturnix japonica): an ultrastructural and ultracytochemical study. | ultrastructural and ultrahistochemical studies were performed on the uterovaginal sperm host glands of the quail (coturnix coturnix japonica). the proximal parts of the glandular necks are lined by a pseudostratified epithelium, consisting of high columnar ciliated cells and small, irregular shaped, basal cells. the true glandular epithelium is composed only of columnar cells with microvilli on their luminal end. a characteristic luminal feature is a large lipid droplet in the perinuclear region ... | 1978 | 688348 |
| dieldrin, ca and p balance, and characteristics of the egg in the quail (coturnix coturnix japonica). | a study was made of the ca and p balance, ca and p content in the femur, physical characteristics of the egg, mineral structure of the shell, and the number of eggs in quails treated with dieldrin (20 mg/kg of diet) for 48 days. the diet contained 3.24% ca and 0.72% p. the ca and p balance, the bone contents of ca and p and the calcemia in the males were not changed by the pesticide. in the females, the pesticide decreased the amount of excreted ca and ca in the egg, for which reason the coeffic ... | 1978 | 674041 |
| effects of drugs that modify brain monoamine concentrations on photoperiodically-induced testicular growth in coturnix quail (coturnix coturnix japonica). | | 1978 | 630021 |
| response of lipogenic enzymes to intensity and duration of overfeeding in the adult japanese quail (coturnix coturnix japonica). | | 1978 | 629919 |
| 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 |
| ovarian responses and serum lh levels after retraction or removal of the oviduct in japanese quail. | the effects of oviduct removal, oviduct displacement or sham-operation were studied in japanese quail (coturnix coturnix japonica). no significant differences were observed between the treatments for body weight, number of follicles larger than or equal to 6 mm diam., or number of ruptured follicles. retraction or removal of the oviduct resulted in similar significant increases (p less than 0.05) in ovarian weight, diameter of the largest follicle, and serum lh levels when compared with the cont ... | 1978 | 621700 |
| the role of the subfornical organ in drinking induced by angiotension in the japanese quail, coturnix coturnix japonica. | synthetic 5-valine angiotensin ii (aii) induced copious drinking when applied directly to the the subfornical organ (sfo) in the japanese quail. reliable response was obtained with as little as 1 ng of aii. the amount of water intake increased dose-dependently from 5 ng to 1 microgram. a latent period of 73.0 +/- 11.0 seconds at 100 ng was noted. the electrical destruction of the sfo significantly reduced the amount of water intake induced by both intravenous and intracranial aii injections. the ... | 1977 | 597841 |
| diet composition and cholesteremia in japanese quail. | male, japanese quail (coturnix coturnix japonica) were given ad libitum access to one of four diets: a corn-soybean meal control, control plus 1% cholesterol, a glucose-soybean meal with 10% fat plus 1% cholesterol (inducer) or inducer minus 1% cholesterol for an initial 12 weeks beginning at 22 weeks of age. serum and liver cholesterol concentrations of quail fed the 1% cholesterol supplemented diets averaged respectively, 5.3 and 10.3 times higher than those from quail fed the corresponding di ... | 1977 | 611506 |
| rapid accumulation of cholesterol in serum, liver and aorta of japanese quail. | five-week-old, male, japanese quail (coturnix coturnix japonica) were given ad lib. access to either a glucose-soybean meal diet with 10% fat and 1% cholesterol (inducer) diet, or a corn-soybean meal (control) diet for 10 weeks. at the beginning of the experiment, and at two week intervals thereafter, quail from each treatment were killed, and the cholesterol concentrations of serum, aorta, and liver, as well as the extent of lipid accumulation in the intima of the aortas were determined. the ch ... | 1977 | 611498 |
| 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 |
| utility of selected line (sea) of the japanese quail (coturnix coturnix japonica) for the discovery of new anti-atherosclerosis drugs. | a special line of the japanese quail (coturnix coturnix japonica) was developed by selective breeding to screen for new drugs that are effective in either preventing or reversing atherosclerosis. by the fourth or fifth generation, approximately 95% of the males of the selected line developed aortic atherosclerosis in response to a 2% cholesterol atherogenic diet. the arterial cholesterol level was significantly elevated after 1 week on the diet and was 14 times the control level after 14 weeks. ... | 1977 | 592732 |
| [germ cell colonization of gonads in experimental quail twin embryos (coturnix coturnix japonica)]. | at the same development stage, two quail twin embryos from right and left halves of a blastoderm contain together as many germ cells as a normal embryol. these are asymmetricaly distributed between the twins as between the right and left genital ridges of control embryos. | 1977 | 410552 |
| 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 |
| 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 |
| the effect of prolactin on reproductive function in female japanese quail (coturnix coturnix japonica). | the anti-gonadal or anti-gonadotropic actions of prolactin in japanese quail (coturnix coturnix japonica) were re-investigated. treatment of mature regularly laying quail with 16 i.u. of ovine prolactin (nih-p-s11) per day for 7 or 14 days caused significant (p less than .05) decreases in ovarian and oviductal weight and a reduction in egg production by the third day of treatment. the most frequent response to prolactin was complete cessation of ovulation for the duration of the experiment, but ... | 1977 | 605076 |
| [effects of herbicides (gramoxone and defenuron) on the development and protein levels of quail (coturix coturix japonica)]. | the herbicides gramoxone (active substance paraquat dichloride) and defenuron (active principle n-phenyl-n'-methylurea) were studied as influencing the development of the japanese quail (coturnix coturnix japonica) and the proteins in their blood serum. the aqueous solution of gramoxone (500 ppm), applied to the egg surface, reduces the hatchability percentage and delays hatching. under similar conditions, defenuron has no inhibitory effect on embryonal development. gramoxone in drinking water ( ... | 1977 | 411224 |
| 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 |
| effect of dietary dl-ethionine and/or dl-methionine on egg laying and activities of some cytoplasmic nad linked-dehydrogenases and nadph-producing enzymes in liver of japanese quail, coturnix coturnix japonica. | the effect of dietary dl-ethionine and/or dl-methionine on egg laying, and activities of some nad linked-dehydrogenases and nadph-producing enzymes in liver of japanese quail, coturnix coturnix japonica was investigated. a 0.30% dl-ethionine plus 0.30% dl-methionine supplemented diet reversed partially the egg laying inhibited by the diet with 0.30% dl-ethionine alone. no inhibitory effect on egg laying was observed for the diet supplemented with 0.30% dl-methionine alone. in marked contrast to ... | 1977 | 16100 |
| angiotensin and water intake in the japanese quail (conturnix coturnix japonica). | | 1977 | 852661 |
| the gene of golden plumage colour linked with lower fertility in mangurian golden quail. | relation between golden plumage colour and lowered fertility has been found in quails (coturnix coturnix japonica). golden colour of plumage is due to the presence of a single gene g, while its recessive alleles gg determine partridge-like colour. homozygotic birds of gg pattern die during incubation. | 1977 | 24317533 |
| [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 |
| protein requirements of coturniz coturnix japonica for reproduction using purified diets. | not more than 20% protein is needed in purified diets based on isolated soybean protein, starch supplemented with vitamins and minerals containing about 2700 kcal./kg. metabolizable energy for optimum egg production, fertility and hatchability. a protein level as low as 16% gave slightly inferior egg production, but the data were statistically insignificant. levels of 24 and 28% protein were not superior to the 20% protein level for the reproductive performance. | 1977 | 605015 |
| [histotopic of glycosidases in the oviduct of the quail (coturnix coturnix japonica) (author's transl)]. | the activities of 6 glycosidases (n-acetyl-beta-glucosaminidase, beta-galactosidase, beta-glucuronidase, alpha-galactosidase, alpha-fucosidase and alpha-mannosidase) in the oviduct of the quail (coturnix coturnix japonica) were studied with histochemical methods. alpha-galactosidase and alpha-fucosidase showed a weak to moderate activity in the surface epithelium and in most of the glands of the oviduct. a distinct reactivity of beta-glucuronidase was observed in the surface epithelium of the wh ... | 1977 | 204147 |
| influence of dieldrin on the production and characteristics of the egg and utilization of calcium and phosphorus in the quail (coturnix coturnix japonica) [proceedings]. | | 1976 | 1028072 |
| [analysis of pattern preferences in japanese quail (coturnix coturnix japonica; galli, aves) with reference to inborn and acquired components]. | japanese quails were examined as to whether inborn or environmental factors were decisive for visual white-black pattern preference. by different breeding conditions (patterning of the environment, sight contact with other quails, knowledge of the food form) it was found out that bright surfaces were preferred to dark ones; young quails preferred patterns resembling the plumage of their own species, whereas older ones favoured those corresponding to their favourite food. furthermore, activities ... | 1976 | 1014936 |
| 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 |
| [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 |
| effect of dde, ddt and calcium on the performance of adult japanese quail (coturnix coturnix japonica). | two experiments were conducted to determine the effects of dde, ddt and calcium on performance of quail. the quail received diets containing 0 or 100 p.p.m. of dde for eight 28-day periods in exp. 1 and 0, 100 or 300 p.p.m. of dde or 100 p.p.m of ddt for six periods in exp. 2. diets containing either 0.5 or 3% calcium were used with each pesticide level. no differences in egg shell thickness, cracked eggs, egg production, feed consumption, egg weights, female body weights, fertility or hatchabil ... | 1976 | 1019080 |
| calcium balance in the quail (coturnix coturnix japonica). 1, influence of sex and diethylstilbestrol. | young adult male and laying female quail, fed with a diet containing 2.64% ca and 0.70% p, were used to study nutritive utilization, corporal calcium retention and endogenous excretion, calcemia, laying and properties of the egg (including the shell structure), mineralization of the femur bone, as well as the influence of diethylstilbestrol upon these parameters. the coefficient of nutritive utilization (c.n.u.) in the female was high and logically superior to that of the male, while the corpora ... | 1976 | 1019078 |
| 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 |
| effect of dietary lead on reproductive performance in japanese quail, coturnix coturnix japonica. | | 1976 | 996861 |
| 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 |
| [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 |
| [epistatic disequilibrium in an experimental population of japanese quail (coturnix coturnix japonica)]. | in an experimental population of the japanese quail coturnix coturnix japonica, two polymorphic ovoglobulin loci, two polymorphic esterase loci, and pgd versus g-6-pd loci are in epistatic disequilibrium. epistatic interactions occur between structurally and physiologically very closely related proteins and enzymes. | 1976 | 135610 |
| 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 |
| comparison of predicted with actual body weight selection gains of coturnix coturnix japonica. | results of nine generations of individual selection for six-week large and small body weight of japanese quail (coturnix coturnix japonica) are reported. the objectives of this study were three-fold: 1) to estimate genetic variation of body weight of coturnix quail at six weeks; 2) to predict selection gains when selecting on an individual basis for large and small body weight; and 3) to conduct a selection program for large and small females and males, respectively, with greater response in the ... | 1976 | 24414762 |
| 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 |
| regulation of intestinal calcium absorption in the laying quail: independent of kidney vitamin d hydroxylation. | two experiments were carried out with laying quail (coturnix coturnix japonica) fed either cholecalciferol (40 mug/kg) or 1 alpha-hydroxycholecalciferol (8 mug/kg). recovery following vitamin d depletion, as indicated by egg production and shell deposition, was faster in quail fed 1 alpha-hydroxycholecalciferol than in those fed cholecalciferol. overall intestinal calcium absorption was higher in the 1 alpha-hydroxycholecalciferol-fed quail due to a higher absorption in the middle parts of the s ... | 1976 | 182938 |
| 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 |
| auditory stimulation of coturnix embryos coturnix coturnix japonica and its later effect on auditory preferences. | | 1976 | 962774 |