Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| 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 |
| [ultrastructural studies of the evolution of the notochord and dorsal embryonic constituents derived from the mesoderm in the chicken and japanese quail during teratogenic exposures to parathion]. | after experimental expositions to parathion--an organophosphorous insecticide which, in birds, gives rise to elective axial abnormalities--the evolution of the notochord and the different dorsal embryonic tissues issued from the mesoderm was analysed with the chicken and the japanese quail embryos. the abnormalities being settled, the notochord, which has normally developed, exhibited no ultrastructural change. sclerotomic cells had normally migrated and, at the time when the provertebrae were f ... | 1976 | 1008561 |
| testosterone feedback on luteinizing hormone (lh) secretion during a photoperiodically induced breeding cycle in japanese quail. | 1976 | 1010307 | |
| parathyroid hormone and eggshell calcification in japanese quail. | the effect of parathyroid hormone (pth) on egg-shell calcification has been investigated in egg-laying japanese quail. lilly parathyroid extract (pte) when injected into quail within 2-6 h of oviposition caused a significantly increased deposition of a chronic 45ca label into the sequential egg-shell compared with the previous egg in the clutch, indicating increased mobilization of bone ca and its subsequent incorporation into the egg-shell. at the same time egg-shell weight/unit area and egg-sh ... | 1976 | 1010971 |
| [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 |
| 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 | |
| ovarian 125i transference in the laying japanese quail: apparent stimulation by fsh and lack of stimulation by tsh. | six-hour accumulations of 125i were measured in the growing oocytes and thyroids of laying japanese quail injected with 0.002 to 2 mg. of fsh or 0.004 to 4 i.u. of tsh per day for six days. fsh at 0.2 and 2 mg./day increased the 125i content of the growing oocytes to 1.4 times the control values. the numbers and the total weights of these growing oocytes doubled. the egg-laying rate remained unchanged. the fsh-induced apparent stimulation of 125 i transference was seen as a consequence of the in ... | 1976 | 1033539 |
| a transport mechanism of methyl mercury to egg albumen in layer japanese quail. | 1976 | 1034154 | |
| diurnal variation and the episodic release of plasma gonadotrophins in japanese quail during a photoperiodically induced gonadal cycle. | blood samples were taken every 3 h, over a 27 h period, from (1) a group of 12 intact male quail on short days (lights on 09.00-17.00 h) and during the 2nd, 15th and 36th day of photostimulation (lights on 09.00-05.00 h); (2) 12 castrated male quail on the 2nd, 20th and 43rd long day, and (3) 12 intact male quail on the 12th long day. plasma lh was measured in all samples and fsh in the 43rd long day castrate and 12th long day intact male samples. although there was considerable variation in the ... | 1976 | 1034662 |
| cadmium-binding protein in tissues of male rats and japanese quail. | 1976 | 1034846 | |
| exposure of the japanese quail embryo to 2.45 ghz microwave radiation during the second day of development. | 1975 | 1041597 | |
| some effects of exposure of the japanese quail embryo to 2.45-ghz microwave radiation. | exposure of quail eggs 4 hr per day during the first 5 incubation days at 2450 mhz and in an exposure field of 30 mw/cm-2 and at an absorbed power of 14 mw/g does not cause any great change in body weight, observed gross malformations, rbc, wbc, hematocrit, hemoglobin, or differential wbc percentages. if small differences exist in these parameters due to microwave exposure, they are obscured by the large variability between individual quail. this variability is believed to partially result from ... | 1975 | 1054240 |
| protective effects of ascorbic acid against toxicity of heavy metals. | toxicity of cadmium in the young japanese quail rapidly produced moderate growth depression, hypogonadism in the male, decreased bone ash, severe anemia, alterations of "indicator" tissue levels of several essential inorganic elements, and marked histological abnormalities of the duodenum, bone marrow, adrenal medulla, and esophageal mucus glands. cadmium appeared to have direct effects on zinc and iron, particularly iron (iii), by decreasing intestinal absorption of these elements. small amount ... | 1975 | 1060397 |
| control of renal vitamin d hydroxylases in birds by sex hormones. | kidney homogenates from adult male japanese quail or chickens demonstrate hydroxylase activity predominantly for the 24 rather than the 1 position of 25-hydroxyvitamin d3 (25-hydroxycholecalciferol). a single injection of 5 mg of estradiol-17beta into a male bird completely suppresses the 24-hydroxylase and greatly increases the 1-hydroxylase activity. immature males do not respond well to estrogen alone, but they do respond well to estradiol plus testosterone. testosterone alone has little or n ... | 1976 | 1066683 |
| structural aspects of immune recognition of lysozymes. iii. t cell specificity restriction and its consequences for antibody specificity. | we have studied the relationship between the determinants encountered by t cells on an antigenic molecule and the specificities of the antibodies eventually produced by the b cells with which these t cells cooperate. the number of epitopes on the hen lysozyme (hel) molecule available to t cell receptors was functionally limited by inducing t cell tolerance to hel in rabbits. highly cross-reactive lysozymes were then used to challenge the hel-unresponsive rabbits. only t cells which recognize ne ... | 1976 | 1087241 |
| origin of hemopoietic stem cells in embryonic bursa of fabricius and bone marrow studied through interspecific chimeras. | the histogenesis of the bursa of fabricius and of bone marrow was studied by a biological cell marking technique based on differences in the nuclear structure of two species of birds, japanese quail (coturnix coturnix japonica) and chick (gallus gallus). in quail cells the nucleus contains a large amount of heterochromatin associated with the nucleolus. that makes it possible to distinguish them from chick cells after feulgen-rossenbeck staining and by electron microscopy. by grafting bursal rud ... | 1975 | 1101262 |
| directional selection for growth at two ambient temperatures in coturnix coturnix japonica. | four lines of quail; random-selected, male-selected, female-selected and male- and female-selected lines, were subjected to 37 plus or minus 1-6 degrees c from 3 to 5 weeks of age while another four lines, similarly selected, were reared at room temperature (15 to 27 degrees c). selection for increased growth was practised for two generations using ten females and five males as parents in each line. a significant interaction between time and temperature was observed in the third generation proge ... | 2005 | 1111852 |
| the rate of testicular development in japanese quali (coturnix coturnix-japonica) following stimulation of the extra retinal photoreceptor. | 1975 | 1112322 | |
| effect of choline deficiency on utilization of labeled precursors of choline and turnover of choline in the liver of mature japanese quail. | studies were conducted to determine the effect of choline deficiency on utilization of various labeled precursors of choline and rate of choline biosynthesis in mature japanese quail. a deficiency of dietary choline did not change the in vivo incorporation of 14c-label from (1,2-14c) ethanolamine, n, n-dimethyl (1,2-14c) ethanolamine, and l-(methyl-14c) methionine into liver phosphatidylcholine (pc) or total phospholipids. incorporation of radioactivity from (14c) serine into liver pc was increa ... | 1975 | 1113201 |
| role of the caeca in japanese quail energetics. | 1975 | 1116070 | |
| plasma levels of luteinizing hormone in gonadectomized japanese quail exposed to short or to long daylengths. | plasma levels of luteinizing hormone (lh) were measured by radioimmunoassay in gonadectomized male and female japanese quail, exposed either to 8 h light: 16 h darkness per day (8l:16d; short days) or to 20l:4d (long days). in both sexes, exposure to long days increased lh levels and in the gonadectomized quail lh continued to rise over several weeks. eventually the castrated quail had levels about five times higher than the control birds and the ovariectomized quail had levels about 14 times hi ... | 1975 | 1117231 |
| chicken gonadotrophins: their effects on the testes of immature and hypophysectomized japanese quail. | five-week old japanese quail held under short daylengths (8l/16d) were injected daily for two weeks with 20 mug/day of purified chicken luteinizing hormone (lh) or with one of two chicken follicle-stimulating hormone (fsh) fractions. both intact and hypophysectomized birds were used. after killing, the testes were weighed and fixed for light- and electron-microscopy. following hypophysectomy testicular weights fell significantly below those of saline-injected controls, indicating that short day ... | 1975 | 1120336 |
| the effects of prenatal and postnatal auditory stimulation on early vocalization and approach behavior in the japanese quail (coturnix coturnix japonica). | 1975 | 1122222 | |
| studies on combined effects of organophosphates and heavy metals in birds. i. plasma and brain cholinesterase in coturnix quail fed methyl mercury and orally dosed with parathion. | we found that mercury potentiated the toxicity and biochemical effects of parathion. male coturnix quail (coturnix coturnix japonica) were fed a sublethal concentration of morsodren (4 ppm as methyl mercury) for 18 weeks. this resulted in an accumulation of 21.0 ppm of mercury in the liver and 8.4 ppm in the carcass. birds fed clean feed and those fed morsodren-treated feed were orally dosed with 2, 4, 6, 8,and 10 mg/kg parathion, and their 48-h survival times compared. the computed ld50 was 5.8 ... | 1975 | 1125450 |
| landolt's club in the japanese quail: a fine structural study. | 1975 | 1126406 | |
| studies on differentiation of mûllerian ducts in the quail, coturnix coturnix japonica. ii. effects of sex hormones on nucleic acid synthesis in isolated female ducts. | the present investigations were carried out in an effort to determine the mechanisms underlying differentiation in the avian müllerian duct, especially the asymmetrical differentiation of the female ducts. using the isolated female ducts of japanese quail, the incorporations of 3h-uridine and 14c-thymidine were determined in vitro at several embryonic stages. incorporation of 3h-uridine was altered with some synchronous fluctuation during the embryonic period in both the left and right ducts, wh ... | 1975 | 1127406 |
| the effect of mirex on reproduction of japanesequail and on characteristics of eggs from japanese quail and chickens. | laying white leghorn chickens were fed mirex at 0, 5, 10, 20, 40, 80, and 160 ppm for 12 weeks, and laying japanese quail were fed mirex at 0, 5, 40, and 80 ppm for 12weeks. the data suggest that dietary mirex at these levels did not affect egg production, egg weight, shell thickness, shell calcium, the proportion of broken eggs, or the proportion of soft-shelled eggs of either chickens or quail. statistical significance (p greater than 0.05) associated with dietary mirex was detected in the ana ... | 1975 | 1130832 |
| mesenchymal origin of bursal lymphoid cells in japanese quails. | 1975 | 1130940 | |
| thyroid stimulating hormone distribution in the pars distalis of the japanese quail. | 1992 | 1132676 | |
| leukopenia in neonatal japanese quail. | japanese quail were sacrificed at one or two days after hatching. several hematological parameters were measured. a leukopenia occurred in the two-day-old quail. concomitantly the circulating numbers of lymphocytes were reduced in the older quail. it appears that this functional leukopenia is attributable to reduced numbers of lymphocytes and may represent an heretofore undefined physiological adaptive mechanism which occurs during the early neonatal period. | 1975 | 1135136 |
| ontogeny of lactate dehydrogenase isozymes in chicken-quail hybrid embryos. | the ontogeny of lactate dehydrogenase (ldh) isozymes was examined in avian hybrids and compared with the isozyme patterns of the parental species. hybrids were obtained by crossing female japanese quali (coturnix coturnix japonica) with male domestic chickens (gallus gallus domesticus). by use of starch gel electrophoresis and an enzyme-specific stain, traces of embryonic paternally derived ldh were detected in unincubated hybrid eggs. it was concluded that the embryonic genes coding for the b s ... | 1975 | 1137566 |
| barbiturate potentiation in mercury poisoning. | barbiturate potentiation was observed in japanese quail fed dietary levels of 4, 21, and 24 ppm hg as methyl mercuric chloride. gross symptoms of mercury poisoning were not observed until after bp was observed. after the initial increase in bp time was observed in the birds receiving 4 and 12 ppm mercury, there followed a plateau in response until those birds receiving 24 ppm hg began to show gross symptoms of toxicity and the bp time markedly rose again. pronounced bp persisted 7 weeks after re ... | 1975 | 1139056 |
| distribution of labelled testosterone in japanese quail using autoradiography of whole body sections. | auto radiography offers a simple method of giving preliminary information about the metabolism in vivo of steroids. 2. in japanese quail injected testosterone is metabolised mainly in the gastro-intestinal tract. | 1975 | 1139354 |
| [biochemical polymorphism of japanese quail (coturnix coturnix japonica): comparison of functionally different proteins (author's transl)]. | the polymorphism observed among the enzymes involved in the respiratory metabolism (lactate dehydrogenase, malate dehydrogenase, phosphoglucomutase, phosphohexoseisomerase, glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase fructose 1-6 diphosphate dehydrogenase) is less important than that of the enzymes physiologically less essential, such as the various esterases, the alkaline phosphatase, the alcohol dehydrogenase, and of the non-enzymatic proteins (ovalbumin, ovoglobulins, ... | 1975 | 1140313 |
| rate of thyroxine secretion by male and laying japanese quail: identification of the radioactive thyroxine degradation component of the multiphasic 131-i curve. | counting of radioactivity in japanese quail in vivo showed a rapid loss of 131-i from the body 12-24 h after the i.v. injection of [131-i]thyroxine (t4), followed by a period of slow decrease in counting rates to 96 h. from comparison of these [131-i]t4 curves with curves for 131-iodide-injected birds and from counts on serum and other tissues in vitro it was concluded that, for japanese quail, the t4 secretion rate should be calculated using serum samples taken during the first 12 h. using this ... | 1975 | 1141813 |
| cellular changes in the gonads, livers and adrenal glands of japanese quail as affected by the insecticide kepone. | 1975 | 1145634 | |
| hematology of neonatal japanese quail. | the hematologic development of japanese quail was studied as a function of time through the first 49 hr post-hatching. packed cell volumes, hemoglobin levels, erythrocyte and leukocyte numbers, as well as differential percentages of lymphocytes, heterophils, basophils, eosinophils, and monocytes were determined. additionally, the mean corpuscular volumes, mean corpuscular hemoglobins, and mean corpuscular hemoglobin concentrations were calculated. of particular interest are the increasing mean c ... | 1975 | 1152424 |
| multichannel digiral recording for oviposition in japanese quail. | a multichannel recording system is described which offers the advantages of accuracy and low cost. the system was a commercially digital printer and clock mechanism. switch decoding circuitry is presented in the article. the system described will reocrd from 200 switches connected to egg trip levers on bird cages. an example of data obtained from two japanese quail illustrates the smooth patterns of lay seen when recorded to one minute accuracy. | 1975 | 1153375 |
| effects of hormonal pretreatment of cardiac necrosis in the japanese quail. | male japanese quail castrated and treated with beta-estradiol-3-benzoate for 3 wk were more resistant than sham-operated males to the necrogenic effects of massive doses of isoproterenol. the estrogen-treated castrate also weighed significantly more and had significantly lower hematocrit ratios than either the sham-operated male or the intact male. these results indicate that there is a definite sex-related protective effect this type of cardiac necrosis which cannot be explained on the basis of ... | 1975 | 1153402 |
| [a comparison of mean weights and the variability of weights of twelve bilateral muscles of the japanese quail (coturnix c. japonica) studied in four generations of consanguine crosses]. | the influence of the increase of the degree of homozygosity, obtained by successive consanguine cross-breeding, on the mean weights and the variability of the weights of twelve muscles of the japanese quail (coturnix c. japonica) was studied in four generations of females and two generations of males. it was found that the mean weights of the twelve muscles in both sexes showed a progressive reduction in the consecutive generations of consanguine crosses, this reduction being more marked in the ... | 1975 | 1154998 |
| hormonal basis of sexual differentiation in the japanese quail. | on the 10th day of incubation, japanese quail eggs either were injected with testosterone propionate (tp), estradiol benzoate (eb), or oil, or were not injected. when sexually mature, all birds were examined for a variety of sexually dimorphic behavioral and physical characteristics, both masculine and feminine. they were then exposed to a short photoperiod (causing gonadal regression), treated with either tp or eb, and examined again. either androgen or estrogen administered before hatching dem ... | 1975 | 1159113 |
| polybrominated biphenyls: tissue distribution and effect on hepatic microsomal enzymes in japanese quail. | 2006 | 1159188 | |
| relationship of embryonic development to egg weight, hatch weight, and growth in japanese quail. | relationships between egg, embryo, hatch, two-week and four-week body weights of three quail lines differing in growth rate were investigated. two of the quail lines had previously undergone 29 generations of selection for increased four-week body weight, and the third line was a nonselected control. selected lines produced heavier eggs, larger 10 to 11 day embryos, and larger chicks. percent embryo weights were similar for all three lines indicating that correction for egg size eliminated diffe ... | 1975 | 1161716 |
| binary assessment of early approach-behaviour in the japanese quail. | visually-elicited early approach-behaviour was studied in 1013 japanese quail chicks (coturnix coturnix japonica) by a newly developed, binary assessment procedure. this procedure was shown to be highly effective for identifying approach preferences and related indivisual differences in early approach-behaviour. experimental results show that quail chicks exhibit approach-responses to a flashing light. within various paired intensity-combinations of the tested intensity-range of approximately tw ... | 1975 | 1163852 |
| nitrosobenzene-induced ferrihemoglobin formation in japanese quail erythrocytes. the significance of ferrihemoglobin reduction. | quantitative aspects of nitrosobenzene-induced ferrihemoglobin formation were studied in quail erythrocytes in comparison to goat red cells. many similarities exist with the mechanism in mammalian red cells such as a nadph-dependent enzymatic recycling of phenylhydroxylamine from nitrosobenzene. also the mechanism of ferrihemoglobin reduction is similar in both species, it is a nadh-dependent process. however, the reducing activity of quail red cells exceeds by far the activity of the majority o ... | 1975 | 1165790 |
| the effect of temperature and diet on the fatty acid composition of japanese quail. | 1975 | 1167351 | |
| selection for mating ability in japanese quail. | results are presented for a replicated mass selection experiment for high and low cumulative number of completed matings. through six generations of selection heritabilities of the selected trait averaged .07 for the high lines and .25 for the low lines. no correlated responses were noted for body weight at either 4 or 8 weeks of age, whereas the relationships of the selected trait with size of the cloacal gland and relative aggressiveness were positive. | 1975 | 1171460 |
| [reaction to vaccination and measles antibody levels in children inoculated with vaccine prepared from the l-16 strain from japanese quail embryonic fibroblast cultures]. | 1975 | 1178922 | |
| gene activation of alcohol dehydrogenase in japanese quail and chicken-quail hybrid embryos. | no preferential activation of the maternally derived alcohol dehydrogenase (adh) allele was found in any of the chicken male x japanese quail female hybrids examined. adh activity in the liver was, in fact, found to exist in two different cathodal zonal regions on starch gel electropherograms; the zone ii bands appeared at day 5 of incubation in the quail embryo (day 6 in the hybrid embryo) and the zone i bands appeared in 9-day quail embryos (10-day hybrid embryos). by day 13 of incubation, onl ... | 1975 | 1180882 |
| [interactions of estradiol benzoate and progesterone on the development of the oviduct in quail. ii. (coturnix coturnix japonica). ultrastructural studies of two types of responses obtained by varying doses of estradiol benzoate injected]. | 1975 | 1181239 | |
| effects of the egg cycle and route of administration of prostaglandin-induced oviposition of hens and japanese quail. | 1975 | 1181427 | |
| standards of morphological development of the quail, coturnix coturnix japonica, embryo. | the morphologic growth of 290 japanese quail embryos was analyzed to enable an assessment of the developmental status of an organism and permit the evaluation of experimental effects on development. the growth of 36- to 228-hr embryos was analyzed according to hamburger and hamilton's (1951) stages of development for the chick; the growth of 240-hr and older embryos was analyzed by correlating age with the length of 5 morphologic structures, toe, leg, beak, wing, and total. a correlation of +.99 ... | 1975 | 1183856 |
| enzymes and electrolytes in the semen of japanese quail. | japanese quail (coturnix coturnix japonica) semen was collected at 10 a.m., 2 p.m., or 6 p.m. for four consecutive days during four consecutive weeks. all but the first day's collections were analyzed for sodium, potassium, chloride, carbon dioxide, h+ concentration, cell count, volume and total sperm number. a random sample was then collected for the analysis of amylase and another random sample was collected for the analysis of glutamic oxalacetic transaminase (got), creatine phosphokinase (cp ... | 1975 | 1187516 |
| toxicity of dietary lead in japanese quail. | the toxicity of dietary lead in japanese quail was investigated. the data indicated that dietary lead, in the form of lead acetate, was toxic to young quail at the level of 500 p.p.m. and this toxicity was evidenced by an inhibition of normal growth and by anemia. the anemic state in the lead toxic quail was more readily detected by reduced blood hemoglobin concentrations than by packed cell volumes. in addition, the data suggested that lead interfered with normal sexual development in the males ... | 1975 | 1187520 |
| effect of turning and age of egg on hatchability in the pheasant, chukar, and japanese quail. | eggs from pheasants, chukar partridge and japanese quail were stored 1 to 28 days in a cold box where temperature and relative humidity were maintained at approximately 16 degrees c. and 70 percent, respectively. half the eggs from each species was turned once daily from a 45 degree angle from the verticle to the opposite angle. turning eggs prior to incubation had no appreciable effect on hatchability of eggs stored up to 28 days. length of storage for eggs from the pheasant and quail was criti ... | 1975 | 1187527 |
| inefficacy of carnitine as a substitute for choline for normal reproduction in japanese quail. | an experiment was conducted to determine if dl-carnitine could partially or completely substitute for choline for maintaining normal reproduction in japanese quail. adding 2800 mg. choline chloride per kg. to a purified diet significantly increased egg production and egg weight and improved hatchability, but adding a similar level of carnitine failed to improve any of the parameters measured. likewise, performance of quail fed 1400 mg. carnitine per kg. in combination with 1400 mg. choline chlor ... | 1975 | 1187531 |
| hematological and biochemical effects of chronic co exposure on the japanese quail. | japanese quail were exposed to a concentration of 300 to 350 ppm co to maintain an equilibrium carboxyhemoglobin concentration of 30% for a period of 4 weeks. compared to a control group of birds maintained in an identical chamber, the co-exposed quail demonstrated increases in hematocrit ratio and hemoglobin concentration. at the end of the exposure period, the co-exposed quail had significantly larger plasma and blood volumes, slight but significant right ventricular hypertrophy and higher fas ... | 1975 | 1188199 |
| effect of prolactin on thyroid function in japanese quail (coturnix coturnix japonica). | 1975 | 1193366 | |
| protection against zinc deficiency by prior excess dietary zinc in young japanese quail. | three experiments were designed to determine whether an excess of zinc during the first week of life would afford any protection to young japanese quail during a subsequent period of zinc deprivation. day-old birds of both sexes were fed an adequate purified diet containing soybean protein with requirement (25-30 mg/kg of diet) or higher levels of zinc for 1 week. the zinc level was reduced during the second week to the deficient level of 1mg/kg of diet, except for the controls which continued t ... | 1975 | 1195013 |
| new animal model for atherosclerosis research. | japanese quail were investigated for their utility as a model for the discovery and evaluation of anti-atherosclerosis compounds. although they possessed suitable characteristics for a screening animal, their development of atherosclerosis was too variable to make them a practical model. a search was conducted to find a means to make quail uniformly atherosclerotic. to this end a line of quail susceptible to experimental atherosclerosis (sea) were selectively bred. thus, the sea japanese quail i ... | 1975 | 1199872 |
| genetical control of phosphoglucose isomerase isozymes in the japanese quail erythrocytes. | three phenotypes of phosphoglucose isomerase (pgi) from the japanese quail erythrocytes were observed by horizontal starch gel electrophoresis. population and family data from one laboratory population of quail was consistent with the theory that pgi polymorphism was controlled by two codominant, autosomal alleles designated pgif and pgis with gene frequency values 0.25 and 0.75, respectively. the study supported the earlier view that the japanese quail is highly polymorphic with regard to bioch ... | 1975 | 1200415 |
| frozen thin-sections of rapidly forming bone: bone cell ultrastructure. | frozen thin-sections of fresh medullary bone, which had been calcifying for 2 to 4 days, were prepared and examined in the electron microscope. the bone was obtained from male japanese quail treated with estradiol valerate. large numbers of 200-800 a electron dense granules, which consisted of 50-75 a subparticles, were seen within mitochondria. a population of electron-dense particles slightly smaller than ribosomes was also observed. most granules were not present after conventional fixation, ... | 1975 | 1201464 |
| tanycyte absorption affected by the hypothalamic deafferentation in japanese quail, coturnix coturnix japonica. | in japanese quail, coturnix coturnix japonica the tanycytes of the median eminence absorbed peroxidase injected into the third ventricle. the number of tanycytes showing peroxidase reaction was greater in the posterior median eminence than in the anterior median eminence. following hypothalamic deafferentation, the tanycyte absorption was augmented both in the posterior and anterior median eminence. these findings suggest that axons of some neurons, which have inhibitory action on the tanycyte a ... | 2005 | 1201586 |
| proceedings: follicle-stimulating hormone in the japanese quail: variation in plasma levels during photo-periodically induced testicular growth and maturation. | 1975 | 1206270 | |
| electrical stimulation of the hypothalamus and luteinizing hormone secretion in japanese quail. | experiments were undertaken to localize those hypothalamic areas in the male quail (coturnix coturnix japonica) where electrical stimulation would increase lh secretion. the posterior basal hypothalamus was stimulated with rectangular pulses (height 500 mua) through a bipolar electrode for 6 min, blood samples being taken for lh assay 20 min before, and 2, 10, 20 and 30 min after stimulation. the highest plasma concentration was observed in the 2 min sample. over the next 30 min the lh level dec ... | 1975 | 1206328 |
| [effect of accelerations, hypergravity and hypokinesia on protein metabolism in japanese quail. i. effect on muscle composition]. | the effect of hypokinesia, hypergravity achieved by centrifugation and additional weight load on the content and composition of proteins and nucleic acids in the chest and pelvic muscles of four groups of quails (coturnix coturnix japonica) was studied. the first group was used as controls, the second included hypokinetic birds, the third was made of birds with an additional weight load (the load was a double weight of the animal) and the fourth group included birds exposed to acceleration of 3 ... | 2013 | 1207021 |
| influence of low ambient temperature and dietary lipids on adipose tissue and plasma fatty acid composition of the japanese quail. | japanese quail were maintained on synthetic diets containing 15% corn oil, 15% tallow, and zero fat, and were later exposed at 3.5 degrees c for 21 days. a distinct influence of dietary fat composition upon the adipose tissue triglyceride fatty acid composition was detected, but no change in fatty acid composition was produced with cold exposure. the fatty acid composition of adipose tissue from quail acclimatized to winter temperatures showed no trend towards a greater degree of unsaturation. t ... | 1975 | 1213031 |
| [the amino acid sequence of the double-headed protein proteinase inhibitor from dog submandibular glands, i. structural homology to the pancreatic secretory trypsin inhibitors (author's transl)]. | the primary structure of the broad specificity proteinase inhibitor from dog submandibular glands was elucidated. the inhibitor consists of a single polypeptide chain of 117 amino acids which is folded into two domains (heads) connected by a peptide of three amino acid residues. both domains i and ii show a clear structural homology to each other as well as to the single-headed pancreatic secretory trypsin inhibitors (kazal type). the trypsin reactive site (-cys-pro-arg-leu-his-glx-pro-ile-cys-) ... | 1975 | 1213678 |
| the effect of dietary dilution on the intestinal anatomy of the japanese quail (coturnix coturnix japonica). | there was an increase in the length of the small intestine, caeca and colon when japanese quail (coturnix coturnix japonica)were fed on a diet diluted with fibre. no differences were found in the length of the villi and the thicknesses of the submucosal layers throught the large and most of the small intestine between birds fed on the normal diet compared with those fed on the diluted diet. the birds fed on the normal diet appeared to have more mucous goblet cells and lymph nodes in the caeca th ... | 1975 | 1215679 |
| [use of the embryos of japanese quail for the production of biological preparations]. | 1975 | 1216624 | |
| pathological studies of marek's disease in japanese quail. | 1975 | 1228263 | |
| combining ability in a diallel cross of three lines of coturnix coturnix japonica. | three random-bred lines of japanese quail were crossed in a 3 x 3 diallel to estimate their combining ability for hatchability, growth rate, and age at 25, 50, 75 and 100% lay. the experiment was conducted as a randomized complete block design with a 3 x 3 x 2 x 2 factorial arrangement of treatments (3 lines of sire x 3 lines of dam x 2 ambient-temperature stresses x 2 sexes). approximately 1200 eggs in three hatches were set; 496 progeny measured for five week body weight; and 212 hens observed ... | 1975 | 1228714 |
| photoacceleration of embryonic development in depigmented japanese quail eggs. | pigmented and depigmented japanese quail eggs were incubated either in the presence of a light source for one week or in the dark. acceleration of embryonic development was apparent by the first day of incubation in the depigmented eggs exposed to light. embryonic weights of eggs exposed to light were significantly (p less than .05) greater than eggs incubated in the dark by the fourth day of incubation. air cell temperatures of depigmented eggs were significantly (p less than .05) lower than pi ... | 1975 | 1228715 |
| reproductive response to intermittent light regimens in coturnix coturnix japonica. | the effect of intermittent light regimens of one hour of light interspaced with dark periods of one, two or three hours, repeated three, four, five or six times per day was determined for age to first egg, hen day percent production and egg production for a 126 day experimental period in females, and the age to initial response of the cloacal gland in males. three broad classes of response were noted based on the equivalent light period (elp), which is defined as the interval from the beginning ... | 1975 | 1228720 |
| genetic differences in susceptibility to ulcerative enteritis in japanese quail. | six lines of japanese quail were derived from a single foundation population. four of the lines were selected on the basis of family mean three week body weight, two were unselected and all lines were randomly mated. quail were housed in wire batteries during the brooding, rearing and laying periods. during the brooding period, hover temperature and floor space per chick were similar from line to line. for the rearing and laying periods, floor space per chick was approximately the same from line ... | 1975 | 1228728 |
| the metabolism of p,p'-dde in laying japanese quail and their incubated eggs. | 1975 | 1239322 | |
| behavioural responses to sex steroids of gonadectomized and sexually regressed quail. | the purpose of these experiments was to compare the behavioural and morphological effects of exogenous sex hormones in gonadectomized quail (coturnix coturnix japonica) with those in quail having regressed gonads as a result of exposure to short days. in expt 1, male quail were assigned to one of three treatment groups: (1) intact, exposed to 16 h light: 8 h darkness and injected with oil (group 16l); (2) gonadectomized, exposed to 16 h light: 8 h darkness and injected with 2-5 mg testosterone p ... | 1976 | 1255064 |
| ovum promotes its own transport in the oviduct of the japanese quail. | 1976 | 1260088 | |
| inbreeding components of body weight and growth rate in japanese quail. | 1. the parental inbreeding component of body weight and daily gain was partitioned into paternal and maternal inbreeding components and the latter were found to be the mor important. 2. the contribution of the maternal inbreeding to the depression of characters was more pronounced on 1-d-old chicks, but declined as the chicks grew. 3. the body weight taken near sexual maturity showed a low and non-significant decline. 4. in spite of differences in the body weight of the two populations of japane ... | 1976 | 1260477 |
| the effect of fluoride supplementation on the strength of osteopenic bone. | the strength of osteopenic bone from calcium deprived rats, quail and roosters was significantly reduced after fluoride supplementation. using a device which measures torque, femurs from rats fed low calcium diets with 100 parts per million fluoride added to the water supply fractured at lower torque values than those values observed for rats fed a low calcium diet without fluoride. fluoride administration and calcium restriction in adult roosters and young japanese quail also resulted in a redu ... | 1976 | 1261131 |
| p,p-ddt and p,p'-dde effects on egg production, eggshell thickness, and reproduction of japanese quail. | p,p' -ddt and p,p' -dde were investigated for effects on egg production and eggshell thickness in japanese quail. p,p' -ddt was examined for effects on hatchability and fertility. dde was tested at 0, 2, 10, 40, and 200 ppm in the diet. no evidence suggested that dde affected number of eggs laid, egg weight, or eggshell thickness at any level of dde tested. ddt was tested at 1,2.5, 10 and 40 ppm in the diet. in one experiment, quail fed ddt at 40 ppm and caged in male-female pairs broke more egg ... | 1976 | 1268339 |
| immunohistochemical localization of lh-producing cells in the adenohypophysis of the japanese quail, coturnix coturnix japonica. | the cells that produce luteinizing hormone (lh) in the adenohypophysis of the japanese quail were identified immunohistochemically using anti-chicken lh serum and horseradish peroxidase-labeled goat anti-rabbit gamma globulin serum. the lh cells are localized in the caudal lobe of the pars distalis. they are elongate in shape shape and are polarized toward the sinusoids, especially in their active states. alterations in size of lh cells are directly related to changes in circulating lh levels as ... | 1976 | 1268921 |
| plasma follicle-stimulating hormone during photoperiodically induced sexual maturation in male japanese quail. | follicle-stimulating hormone (fsh) was measured in japanese quail using a heterologous radioimmunoassay, the specificty of which was confirmed by its cross-reactions with purified chicken fsh and luteinizing hormone (lh). plasma concentrations of fsh, lh and testosterone were determined in quail during the testicular growth and sexual maturation which follows their transfer from short to long daylengths. all three hormones could be detected in short-day birds but their concentrations were greatl ... | 1976 | 1270949 |
| scalar electrocardiographic measurements in unrestrained young japanese quail. | 1976 | 1271733 | |
| produced by selective breeding of japanese quail animal model for experimental atherosclerosis. | the japanese quail (coturnix coturnix japonica) was bred selectively to produce a strain highly susceptible to experimental atherosclerosis. a population was produced where aortic atherosclerosis is contracted by 99% of the fourth generation males and 83% of the femlaes. forty-three percent of the males exhibited severe atherosclerosis making this line of japanese quail a suitable model for discovering and testing anti-atherosclerosis compounds. this feature is augmented by other features such a ... | 1976 | 1274793 |
| effects of different rates of inbreeding on the body weight and rate of gain of japanese quail. | 1. the effect of regular full-sib and double first cousin mating on body weight and rate of gain over six generations of japanese quail was determined. 2. the depression of characters was more pronounced in the full-sib than in the double first cousin mating system, the relative depression due to parental inbreeding and offspring inbreeding depending on the magnitude of parental effect and individual's own genotypic effect on the character. 3. the body weight and rate of gain taken at an early a ... | 2005 | 1276969 |
| a histochemical study of acid phosphatases in medullary bone matrix and osteoclasts in laying japanese quail. | acid phosphatase activity in medullary bone matrix and osteoclasts of laying japanese quail was examined histochemically. to avoid nonspecific staining, the reactivity of the enzyme was evaluated using both the azo dye method and the lead salt method and nonembedded thick sections and resin-embedded thin sections. the ph of the incubation medium was also varied from the acid range (ph 5.0 and 6.5) to the alkaline range (ph 8.5). medullary bone osteoclasts contain both tartrate-resistant acid pho ... | 1992 | 1281604 |
| phylogeny of regulatory regions of vertebrate tyrosinase genes. | highly homologous dna elements were found to be shared by the upstream regions of the mouse tyrosinase and tyrosinase related protein (trp-1) genes. several nuclear proteins were shown to bind to both of these upstream regions. shared homologous dna elements were also found in the 5' flanking sequences of japanese quail and snapping turtle tyrosinase genes. shared homologous nucleotide sequences were found to be scattered like an archipelago in the 5' upstream regions of mouse and human tyrosina ... | 1992 | 1292011 |
| [the effect of culture media on bacteriocin production in various strains of bacteria]. | some staphylococcus and enterococcus strains were used to investigate the effect of culture medium on bacteriocin production. staphylococcus cohnii sc7, staphylococcus sp. ztj 151, s. saprophyticus ss 877, enterococcus faecium ef1 and e. faecalis efg2 were isolated from the rumen wall and contents of lambs, calves and fallow deer, enterococcus gallinarum eg10 and e. avium ea12 were isolated from the caecum of japanese quail. the tested bacteria belong to producers with a wide antimicrobial effec ... | 1992 | 1297243 |
| distribution of benzodiazepine binding sites in the brain of the male japanese quail and its correlation to a hormonal control: quantitative autoradiography study. | quantitative receptor autoradiography was used to study the neuroanatomical distribution and effects of gonadal hormones on [3h] flunitrazepam binding in the male japanese quail brain. in gonadally intact quail brains, [3h] flunitrazepam displayed a heterogeneous distribution, with elevated levels in the posterior brain regions such as the stratum griseum et fibrosum superficiale and stratum griseum centrale of the optic tectum. lower values were observed in the anteriorly located brain sites su ... | 1992 | 1319005 |
| osteoclasts from medullary bone of egg-laying japanese quail do not express the putative calcium 'receptor'. | the present study reports the contrasting effects of extracellular calcium ([ca2+]e) elevation on cytosolic free calcium levels ([ca2+]i) of osteoclasts, freshly isolated either from medullary bone of the egg-laying japanese quail or from rat cortical bone. [ca2+]i was measured in single osteoclasts using the ca(2+)-sensitive fluorochrome, indo-1. we found that elevation of [ca2+]e failed to induce a rise of [ca2+]i in quail osteoclasts, whilst causing an elevation of [ca2+]i in rat osteoclasts. ... | 1992 | 1321642 |
| outbreaks of egg drop syndrome due to eds-76 virus in quail (coturnix coturnix japonica). | two outbreaks of the egg drop syndrome were observed in quail flocks maintained on a farm together with chickens. the decrease in egg production ranged from 10.6 per cent to 50.6 per cent, and the number of soft-shelled eggs increased with the decline in egg production. in both the outbreaks haemagglutination inhibiting antibodies to eds-76 virus were detected. fluorescent viral antigen specific to eds-76 virus was also detected in the lining epithelial and glandular cells of the uterus. | 1992 | 1329304 |
| host range of rous sarcoma virus pseudotype rsv(hprs-103) in 12 avian species: support for a new avian retrovirus envelope subgroup, designated j. | the host ranges of the rous sarcoma virus (rsv) pseudotype rsv(hprs-103) of a novel avian leukosis virus (alv), strain hprs-103, and representative rsv pseudotypes of subgroups a to f, have been determined in embryo fibroblasts from 12 avian species. domestic fowl, red jungle fowl, sonnerat's jungle fowl and turkey were susceptible to infection by rsv(hprs-103); ring-necked pheasant, japanese green pheasant, golden pheasant, japanese quail, guinea-fowl, peking duck, muscovy duck and goose were r ... | 1992 | 1331300 |
| regulation of aromatase cytochrome p-450 (estrogen synthetase) transcripts in the quail brain by testosterone. | the aromatase cytochrome p-450 (p-450arom) cdna, which was identified by homologies in the dna and in the deduced amino acid sequences with human p-450arom cdna, was isolated from a brain cdna library of japanese quail, demonstrating the presence of rna transcripts of p-450arom in the quail brain. to determine trace amounts of p-450arom mrna in the brain and to examine the effects of testosterone on its expression, a quantitative pcr method of rna transcripts was developed. brain total rna was s ... | 1992 | 1331667 |
| a method to obtain avian germ-line chimaeras using isolated primordial germ cells. | primordial germ cells (pgcs), collected from the blood of 2-day-old chick embryos, were concentrated by ficoll density centrifugation. the blood contained 0.048% pgcs and the concentrated fraction contained 3.9% pgcs in blood cells. the pgcs were picked up with a fine glass pipette, and one hundred were then injected into the terminal sinuses of 2-day-old japanese quail embryos (24 somites); bubbles were then inserted to prevent haemorrhage. the embryos were further incubated at 38 degrees c for ... | 1992 | 1339832 |
| the effect of dehydration on brain temperature regulation in japanese quail (coturnix coturnix japonica). | 1. the effect of dehydration and heat exposure on body and brain temperature was studied in quail exposed to increasing ambient temperatures within the range of 25-40 degrees c. 2. the body-to-brain temperature difference was not affected by increasing ambient temperature or hydration state. a mean body-to-brain temperature difference of 0.96 +/- 0.64 degrees c and 0.85 +/- 0.65 degrees c was found in normally hydrated and dehydrated quail, respectively. 3. the slope of the relation between brai ... | 1992 | 1348680 |
| effects of alpha-methyl-para-tyrosine on monoamine levels in the japanese quail: sex differences and testosterone effects. | experiments were performed to obtain more information on the regulation by steroids of catecholaminergic systems in the brain of japanese quail. dose-response and time-response experiments were first performed to determine optimal conditions for measuring turnover in the quail brain. the norepinephrine and dopamine turnover were then estimated in microdissected brain nuclei of birds that were either sexually mature or gonadectomized or gonadectomized and treated with testosterone. two major fact ... | 1992 | 1350749 |
| characterization of a paired box- and homeobox-containing quail gene (pax-qnr) expressed in the neuroretina. | the retina is an integral part of the central nervous system, and consists of two layers, the outer pigmented layer and the inner sensory layer or neuroretina (nr). the nr layer contains several strata of cells (glial and neuronal) derived from proliferating neuroectodermal precursors that differentiate after terminal mitosis. in vitro, nr cells can differentiate not only into neuronal and glial types, but also into pigment and lens cells. quail (coturnix coturnix japonica) nr cells (qnr) infect ... | 1992 | 1354346 |