Publications

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
response of lipogenic enzymes and plasma lipids to starvation and refeeding in the adult japanese quail (coturnix coturnix japonica).		1979	41568
[polymorphism of proteins in 3 strains of domestic quail (coturnix coturnix japonica)].	in three breeds of domestic quail (coturnix coturnix japonica) with different zootechnical characteristics, heterozygote frequencies of egg white and serum proteins are variable. data are briefly explained by the genetic homeostasis theory.	1975	57750
[biochemical polymorphism in the red partridge (alectoris rufa)].	egg white proteins, hemoglobin, serum proteins and enzymes from alectoris rufa have been examined by starch gel electrophoresis. all three genetic parameters, mean proportion of loci polymorphic per population (p), mean numbers of alleles per locus (a), and mean proportion of loci heterozygous per individual (h) are given for alectoris rufa, and comparison were made between the proteins of the related species coturnix coturnix japonica.	1976	64137
[the effect of proteins from tannery wastes on body proteins in birds].	the effect of 7.0% and 3.5% proportion of lime protein, produced according to the patent csp 133.077, in the diet was studied under laboratory conditions, as exerted on the growth rate of japanese quail (coturnix coturnix japonica) and on the level of serum proteins and keratins in the feathers of these birds. the second generation of quail fed this diet showed an improvement of growth at the final stage and significant internal changes in the protein spectrum of the blood serum. electrophoresis ...	1978	96565
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
[ultradian (between 5 and 70 minutes) respiratory (vo2, vco2) rhythms of 4 small vertebrates used in biomedical research].	four laboratory vertebrate species with a predominant activity, either diurnal (coturnix coturnix japonica), nocturnal (rattus norvegicus, mus musculus), or equivocal (cavia porcellus), present, in usual housing conditions (temperature 20 degrees c, hygrometry 60-70%, acoustical background 70 db, ld12:12 lighting l = 150 lx), food and water ad libitum, ultradian respiratory (vo2, vco2) rhythms of short periods. the frequencies of these rhythms are independent of food intake and activity variatio ...	1979	118819
[polychromatism in eggshell of domestic quail (coturnix coturnix japonica). iii. variability and mechanism of phenotype transmission of the dominant form].	the study of the transmission of egg shell color and pattern in the quail (coturnix coturnix japonica) indicates a polygenic inheritance modality, determined by the female sex.	1975	126743
[polychromatism in eggshell or domestic quail (coturnix coturnix japonica). iv. porphyrin biosynthesis in uteri of phenotypes belonging to the dominant form].	with the introduction of delta-aminolevulinic acid, uterin extracts, in vitro, can synthesize porphyrins (uroporphyrin, 62%; coproporphyrin, 27%; and protoporphyrin, 11%). at the stage where the uterus contains a white egg, various phenotypes in the dominant form are capable of synthesizing with the introduction of delta-aminolevulinic acid, the same quantity of porphyrins. these results are interpreted, assuming the existence of differences in the activity of the enzymes involved during the lay ...	2002	126744
[polymorphism of serum esterases of japanese quail (coturnix coturnix japonica)].	polymorphism of plasma esterases in quail is very important. phenotypic frequences of genetic variants of three esterases are examined and they show a high proportion of heterozygotes. the maintenance of this polymorphism is supposed to be due to the organophosphorus pesticides.	1975	129259
[polychromatism of the egg shell in the domestic quail (coturnix coturnix japonica). 5. augmentation of the incidence of phenodeviants through consanguinity].	an observation of interest is that brother-sister inbreeding appears to have increased the size of protoporphyrin spots of wild type egg-shells in japanese quail. phenodeviant theory can explain the modalities of trait segregation.	2002	134795
[polychromatism of the egg shell in the domestic quail (coturnix coturnix japonica). 6. comparison with polychromatism in related species].	polychromatism and pigments of five phasianides egg-shells others than japanese quail are studied. polychromatism modalities and pigments repartitions are species specific.	2002	134796
[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
[on the histotopochemistry of the uterovaginal region in the quail (coturnix coturnix japonica) (author's transl)].	the surface epithelium of vagina, uterovaginal region and uterus as well as the uterine and uterovaginal glands of 18 mature female quails were studied with histochemical methods. as in other avian species also in the quail a storage of spermatozoa in the lightly coiled uterovaginal glands takes place. the functional specialization of these glands is underlined by their distinct enzyme pattern. a strong reactivity of enzymes from oxidative pathways and of adenosine triphosphatase between epithel ...	1976	137647
light- and electron-microscopic studies on the secretory cytology of the adenohypophysis of the japanese quail, coturnix coturnix japonica.	the effects of thyroidectomy, adrenalectomy, and castration on the pars distalis of male japanese quail, and of injection of lh-rh on sexually inactive females, were investigated by light and electron microscopy. correlation between light and electron microscopy was attained by use of alternate thin and thick sections. six types of secretory cells were identified and the ultrastructural characteristics described. putative endocrine functions have been designated on the basis of responses to expe ...	1996	167970
genetic susceptibility of chicken times quail hybrid embryos to avian rna tumour viruses.	an attempt was made to hybridize the chicken (gallus domesticus) male with japanese quail (coturnix coturnix japonica) female in order to study the genetic susceptibility of hybrid embryos to avian rna tumour viruses of subgroups, a, b, d and e. in the hybrids the results supported the prevailing concept that susceptibility is dominant over resistance regardless of the dominant trait contributed by either parent. it was also observed that the ie gene of the chicken was unable to suppress the 'qu ...	1975	169318
initial expression of the genes for fructose 1,6-diphosphatase, malic enzyme, and aspartate aminotransferase in japanese quail and chicken--quail hybrid embryos.	the initial appearance of a number of enzymes involved in gluconeogenesis was investigated in the early embryogenesis of the japanese quail (coturnix coturnix japonica), the domestic chicken (gallus gallus domesticus), and chicken-quail hybrids. starch gel electrophoresis and enzyme-specific stains revealed genetic differences between muscle and liver fructose 1,6-diphosphatase (fdpase) as well as malic enzyme (me) and mitochondrial aspartate aminotransferase (aat) isozymes of the two species. m ...	1975	170909
monoamine fluorescence in the median eminence of the japanese quail, coturnix coturnix japonica, following medial basal hypothalamic deafferentation.	monoamine fluorescence was examined in the ventral hypothalamus of the japanese quail, coturnix coturnix japonica after medial basal hypothalamic deafferentation. in sham-operated control birds, numerous yellow-green fluorescent fibers were observed in the median eminence and the nucleus tuberis. in the area of the paraventricular organ, a number of fluorescent fibers and cell bodies were observed. in birds with deafferented hypothalami, fluorescence disappeared both in the median eminence and t ...	1995	173465
the effect of prolactin and cb154 on in vivo lipogenesis and enzyme patterns in the japanese quail, coturnix coturnix japonica and of photositmulation on enzyme patterns in the white-throated sparrow, zonotrichia albicollis.		1990	175996
marek's disease in japanese quail -- a pathological, virological and serological study.	experimental studies were performed to see whether japanese quail (coturnix coturnix japonica) are susceptible to jm strain of marek's disease virus (mdv). in three identical trials, a total of 120, one-day-old quail were inoculated intra-abdominally with 0.2 ml. of chicken blood infected with mdv (jm strain) and raised in fapp isolators. uninfected controls were inoculated with normal saline only and raised separately. during the 18-week post infection observation period, 65-80% of the infecte ...	1975	180503
calcium-binding protein and calcium absorption in the laying quail (coturnix coturnix japonica).	a vitamin d3-dependent calcium-binding protein (cabp) has been found in the intestinal mucosa of japanese quail (coturnix coturnix japonica). this protein is similar, if not identical to that of the chick (gallus domesticus). a similar protein fraction appears also in uterine mucosa of laying quail. both intestinal and uterine cabp levels are higher in laying than in non-laying quails. uterine cabp was higher during egg shell formation than during uterine inactivity. the slight corresponding dif ...	1976	180508
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
[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
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
involvement of cholecalciferol metabolism in birds in the adaptation of calcium absorption to the needs during reproduction.	1. the metabolism of calcium and cholecalciferol in quail (coturnix coturnix japonica) and chicken (gallus domesticus) during maturation was correlated to gonadal activity and plasma oestrogen levels. 2. birds with undeveloped ovaries (immature), developed ovaries but not laying (mature), and after laying 3-8 eggs (laying), were used in the first series. 3. birds in which egg production had been arrested by nicarbazin, were used in the second series. 4. plasma 17 beta-oestradiol and calcium were ...	1978	233778
ca-2+-mg-2+-activated atpase in the shell gland of japanese quail (coturnix coturnix japonica).		1975	237726
tracing of cells of the avian thymus through embryonic life in interspecific chimeras.	differences in the structure of the interphase nucleus between two species of birds, the japanese quail (coturnix coturnix japonica) and the chick (gallus gallus) has been used to distinguish cells from different origins in interspecies combinations. this biological cell marking technique was applied to thymus histogenesis. using various combinations between components of quail and chick thymic rudiments, the respective contribution of endodermal epithelium, mesenchyme, and blood-borne extrinsic ...	1975	239088
influence of the egg formation cycle on alpha-aminoisobutyric acid (aib) transport by magnum mucosa and liver slices in japanese quails (coturnix coturnix japonica).		1975	241548
comparative chemical studies on the quail (coturnix coturnix japonica) egg ovalbumin.	1. three components of quail ovalbumin were fractionated by gel filtration and ion exchange chromatography. 2. these were a1, a2, and a3, of which the major is a2. they contained phosphorus of 3, 2 and 1 residues, respectively. 3. the amino acid composition were higher in lys, asp, ser, thr and gly, and lower in arg, glu and ile than chicken ovalbumin. 4. the carbohydrate compositions were slightly higher in hexose and lower in hexosamine than chicken ovalbumin. 5. the molecular weight was deter ...	1978	318336
[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
[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
the epididymal region of the japanese quail (coturnix coturnix japonica).	the epididymal region of the japanese quail was studied histologically. the organ consists of the extratesticular portion of the rete testis, the ductuli efferentes proximales and distales, the ducti conjugentes and ductus epididymidis. distinct tubuli recti link the seminiferous tubules with the rete testis. the non-ciliated cells of the ductuli efferentes proximales and distales show, between them, certain internal structural differences which were highlighted. in 40% of the birds, the ductus ...	1979	433566
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
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
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
pharmacokinetics of gentamicin in blood plasma of quail, pheasants, and cranes.	rate of appearance, peak concentration, and the biological half-life of gentamicin in the plasma of quail (coturnix coturnix), pheasants (phasianus colchicus), and cranes (grus canadensis tabida) were studied. gentamicin was given im in doses of 5, 10, and 20 mg/kg of body weight. peak plasma concentrations occurred earliest in the quail, latest in the cranes. the peak concentrations varied directly with the administered doses in all species. the biological half-life of gentamicin was 42 +/- 12 ...	1979	475144
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
involvement of catecholaminergic nerve fibers in angiotensin ii-induced drinking in the japanese quail, coturnix coturnix japonica.	monamine distribution in a septohypothalamic area was investigated in the japanese quail using a histochemical fluorescence method. this area includes the subfornical organ (sfo) and the preoptic area (poa) which are inferred dipsogenic receptor sites for angiotensin ii (aii) in the japanese quail. nerve fibers showing yellow-green fluorescence were found between the poa and the sfo. thwy traversed from the poa to the sfo, and some fibers seemed to terminate on the neurons in the sfo. after a lo ...	1979	487128
abnormal organization of the cerebellar cortex in the mutant japanese quail, coturnix coturnix japonica.		1979	497820
micro-stereological study of the avian epididymal region.	morphometric studies of the epididymal region of three avian species (gallus domesticus, coturnix coturnix japonica, japanese quail, and numida meleagris, guinea-fowl) were performed using a stereological compensating eyepiece graticule. the proportions of the volume of the region made up of rete testis lacunae, proximal and distal efferent ductules, connecting ducts, ductus epididymidis, blood vessels and connective tissue were determined. the efferent ductules constituted the largest proportio ...	1979	536308
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
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
testosterone and sex related physical characteristics during the maturation of the male japanese quail (coturnix coturnix japonica).		1979	572248
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
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
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
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
the folacin requirements of broiler chicks and quail (coturnix coturnix japonica).	six experiments were conducted to investigate the effect of dietary composition on the folacin requirement of broiler chicks and to determine the folacin requirement of growing japanese quail. the folacin requirement of both chicks and quail could not be determined when an isolated soybean protein based diet containing 0.44 mg. folacin per kilogram was used. dietary composition affects folacin requirement of growing broiler chicks. three values for the folacin requirement of growing broiler chic ...	1977	611491
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
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
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
response of lipogenic enzymes to intensity and duration of overfeeding in the adult japanese quail (coturnix coturnix japonica).		1978	629919
effects of drugs that modify brain monoamine concentrations on photoperiodically-induced testicular growth in coturnix quail (coturnix coturnix japonica).		1978	630021
ultrastructure of the subfornical organ of the japanese quail, coturnix coturnix.		1978	639095
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
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
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
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
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
eastern equine encephalomyelitis outbreak in coturnix quail.	eastern equine encephalomyelitis (eee) was the cause of heavy mortality in coturnix quail (coturnix coturnix) reared commercially in south carolina. the birds showed depression, tremor, and partial paralysis that advanced into complete paralysis, torticollis, and death within a few hours. the only consistent lesion on necropsy was a catarrhal enteritis in the duodenal area. the disease spread rapidly to all pens throughout the two houses on the farm in all birds over 2 weeks old, and mortality r ...	1978	697663
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
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
ultrastructure of the parathyroid gland of the quail, coturnix coturnix japonica.		1978	750947
[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
[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
evaluation of 45 chemicals as chemosterilants in adult male quail (coturnix coturnix).		1976	825643
[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
[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
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
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
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
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
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
[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
[quantitative aspects of the colonization of the gonads by germ cells in the quail embryo (coturnix coturnix japonical)].	a quantitative analysis made on quail embryos coming from 13 isolated parent-couples reveals some significative variations of a genetic origin, between some of the offspring studied: the differences observed concern both the quantitative importance of the colonization of gonads by germ cells and the asymmetrical distribution of pggs (primordial germ cells) between the two genital ridges. the chronological study of the colonization in the quail shows, as in both the duck and the chick, two period ...	1976	947997
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
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
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
effect of dietary lead on reproductive performance in japanese quail, coturnix coturnix japonica.		1976	996861
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
ontogeny of the avian thymus and bursa of fabricius studied in interspecific chimeras.	differences in the structure of the interphase nucleus between two species of birds, the japanese quail (coturnix coturnix japonica) and the chick (gallus gallus) have been used to distinguish cells from different origins in interspecies combinations. this biological cell marking technique was applied to thymus and bursa of fabricius histogenesis. using various combinations between components of quail and chick thymic and bursic rudiments, the respective contribution of endodermal epithelium, me ...	1976	1008530
[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
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
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