Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| synaptic organization of the nucleus dorsolateralis anterior thalami in the japanese quail (coturnix coturnix japonica). | the nucleus dorsolateralis anterior thalami (dla) of birds is the homologue of the mammalian dorsal lateral geniculate nucleus. the positions of terminals from the retina and visual wulst upon identified relay neurons in the dla were examined in japanese quail with both light and electron microscopic techniques. injection of horseradish peroxidase (hrp) into the visual wulst showed that relay neurons projecting ipsilaterally or contralaterally were located in a rostrolateral subdivision (dlalr) ... | 2013 | 3815098 |
| effect of the injection solvent on steroid activity. | the effects of testosterone, 5 alpha-dihydrotestosterone, and androstenedione on cloacal gland and sternotracheal muscle growth and on luteinizing hormone plasma levels were studied in japanese quail. the steroids were given to the animals in daily intramuscular injections and were dissolved either in propylene glycol or in ethanol:saline (1:1). the three steroids had significant effects on the responses which were measured, but the magnitude of this effect was clearly related to the type of veh ... | 1987 | 3817442 |
| meiotic prophase in the left embryonic testis of the japanese quail (coturnix coturnix japonica l.). | spontaneous, transitory feminization of the left embryonic testis occurs in the majority of male japanese quails from day 11 of incubation until the 2nd day after hatching. the feminized gonad is composed of a testicular part and of an ovarian-like cortical region, which develops outside the tunica albuginea. the cortical region contains numerous germ cells some of which enter meiosis on day 11 (i.e. at the time characteristic of female germ cells) and reach pachytene on day 14. cortical regions ... | 2006 | 3827252 |
| melatonin rhythms in quail: regulation by photoperiod and circadian pacemakers. | the profile of melatonin in the eyes, pineal, and blood of japanese quail was assessed in birds held under ld 16:8 and ld 6:18 photoperiods. melatonin levels in all three tissues showed a robust daily rhythm with higher levels occurring at night. the amplitude of the rhythm was depressed and its duration lengthened on ld 6:18 relative to ld 16:8. the blood melatonin rhythm precisely reflected the rhythms shown by the pineal and eyes, supporting the idea that the blood rhythm is a result of melat ... | 1985 | 3831303 |
| eyes--the second (and third) pineal glands? | the pineal gland, the retinas and perhaps other tissues as well may in some species produce melatonin that appears in significant quantities in the circulation. in at least one species, japanese quail, the circadian rhythm in the levels of circulating melatonin reflects contributions from both the pineal and the retinas; in other species circulating melatonin may come exclusively from the pineal or perhaps only from the eyes. comparative behavioural and physiological data from several bird and l ... | 1985 | 3836819 |
| effect of dietary calcium stress on plasma vitamin d3 metabolites in the egg-laying japanese quail. | experiments were performed to ascertain whether circulating levels of 25-hydroxyvitamin d3 and 1,25-dihydroxyvitamin d3 varied in a cyclic manner during the 24-hr ovulatory period in japanese quail hens and to assess the effects of dietary calcium restriction upon levels of the plasma vitamin d3 metabolites during that period. birds fed a marginally-deficient calcium diet (1.7%) had significantly elevated plasma 1,25-dihydroxyvitamin d3 (.71 +/- .11 ng/ml, mean +/- sem) compared with those fed h ... | 1985 | 3839307 |
| biological activity of the three mono-beta-d-glucopyranosides of 1,25-dihydroxycholecalciferol. | the biological activity of the three mono-beta-d-glucopyranosides (mono-glucosides) of 1,25-dihydroxycholecalciferol [1,25(oh)2d3] synthesized chemically has been studied in chicks and japanese quails. while the 1- and the 3-glucoside showed no or only little effect on serum calcium, bone weight, calcium binding protein (cabp) or calcium deposition in the egg shell, the 25-glucoside was found to be more than half as active as the aglycone 1,25(oh)2d3. the bioactivity of this glucoside parallels ... | 1985 | 3841093 |
| medullary bone matrix formation, mineralization, and remodeling related to the daily egg-laying cycle of japanese quail: a histological and radiological study. | a model is presented concerning the remodeling of medullary bone during the egg-laying cycle of hens. this model is partly based on earlier results that showed that the active period of medullary bone resorption that produces part of the calcium needed for the eggshell coincides with the period of medullary bone matrix formation. it was hypothesized that mineralization of this matrix takes place during the subsequent inactive period. the present study examines this model. the medullary bone matr ... | 1985 | 3841645 |
| evaluation of timefurone, a new anti-atherosclerotic drug, for its effects on lipoprotein cholesterol in male sea japanese quail and rats. | timefurone was evaluated in several animal models for cholesterol-lowering and anti-atherosclerotic activity. in normal male rats, a dose-response study with timefurone (3, 10, 30, 50 and 100 mg/kg/day) was conducted for 7 days. significant activity was observed only at 50 and 100 mg/kg/day, where very low and low density lipoprotein cholesterol [(vldl + ldl)-c] and total-c levels were reduced (mean 27 and 20%). high density lipoprotein cholesterol (hdl-c) was lowered 24% by the high timefurone ... | 1985 | 3863623 |
| synergistic effects of 1,25(oh)2d3 and 24,25(oh)2d3 on duodenal cabp in rachitic chicks and on eggshell weight in japanese quails. | the role of 24,25(oh)2d3 in calcium homeostasis is still controversial. in the present study the administration of low doses of 1,25(oh)2d3 and of higher doses of 24,25(oh)2d3 either alone or in conjunction with each other, were studied in rachitic chicks and in japanese quails. whereas 24,25(oh)2d3 alone had no significant effect on duodenal cabp and on alkaline phosphatase in chick serum, it increased the influence of 1,25(oh)2d3 on these two parameters strongly. also, when 1,25(oh)2d3 and 24, ... | 1985 | 3872123 |
| survey of vitamin d metabolite levels during growth and development in japanese quail. | plasma calcium and vitamin d metabolite levels were monitored during growth and development in male and female japanese quail. in male japanese quail, plasma calcium levels were constant (range 9.0 to 10.9 mg/dl); the 1,25-dihydroxyvitamin d [1,25-(oh)2d] levels remained undetectable in all age groups. plasma calcium levels in the females rose at 6 weeks of age and remained elevated. the female 1,25-(oh)2d levels increased from undetectable levels at 3 to 5 weeks to a peak of 297 pg/ml at 8 week ... | 1985 | 3877920 |
| interaction of androgens and estrogens in the control of sexual behavior in male japanese quail. | a series of 4 experiments was performed to study the relative contribution of androgens and estrogens in the activation of sexual behavior in castrated male quail. the synthetic androgen methyltrienolone (r 1881) which is not metabolized in androgen target tissues activated sexual behavior in castrated birds and at the dose level of 0.5-1 mg/day/animal had the same potency as testosterone (t). however r 1881 was much more active than t in the induction of cloacal gland growth and activation of c ... | 1985 | 3877943 |
| hexachlorobenzene-induced porphyria in japanese quail: an in vitro study of changes in cytochrome p-450 and monooxygenases. | the ability of hexachlorobenzene (hcb) to cause changes in the isozymic composition of hepatic monooxygenases of japanese quail was assessed. hcb-induced changes in the relative concentrations of benzo[a]pyrene metabolites produced in vitro were apparent. hcb treatment also resulted in changes in the responsiveness of ethoxycoumarin o-deethylase (ecod) and ethoxyresorufin o-deethylase (erod) to the in vitro cytochrome p-450 inhibitors metyrapone, skf-525a, and alpha-naphthoflavone. these changes ... | 1985 | 3878414 |
| ontogeny of the third component of complement of japanese quails. | ontogeny of quail complement was examined in terms of serum c3 level, cytolytic activity of total complement, functional activity of c3 via the classical pathway (ccp) and an alternative route (acp), and the distribution of c3-bearing cells. in serum, c3 was detected from 7-day-old embryos by rocket immunoelectrophoresis. thereafter, its concentration increased rapidly and reached the adult level at 4-5 weeks of age. total activities of serum complement via ccp and acp, both of which were assaye ... | 1985 | 3882557 |
| the management of japanese quail and their use in virological research: a review. | since the domestication of japanese quail during the last few decades, they are extensively used as table birds and pet birds. these birds, because of their physiological resemblance to chickens, inexpensive maintenance and rapid generation turnover are increasingly used in biomedical research including virology. in the present review the life cycle of birds, care and incubation of eggs, rearing, nutrition and naturally occurring diseases are described. the use of japanese quail, their embryos a ... | 1985 | 3883644 |
| immunohistochemical localization of corticotropin-releasing factor (crf)-containing neurons in the hypothalamus of the japanese quail, coturnix coturnix. | immunohistochemical localization of corticotropin-releasing factor (crf)-like immunoreactivity in the brain of the japanese quail was studied by means of the peroxidase anti-peroxidase (pap) method. crf-immunopositive perikarya of parvocellular neurons were observed mainly in the nucleus praeopticus medialis and nucleus paraventricularis. additional perikarya were also detected in the nucleus hypothalamicus posterior medialis in the hypothalamus and in the non-hypothalamic nucleus accumbens, nuc ... | 1985 | 3884159 |
| diurnal rhythm of water intake and plasma angiotensin ii in the japanese quail (coturnix coturnix japonica). | a diurnal rhythm was noted in the hourly water intake of the japanese quail exposed to a 12l:12d photoperiod. two peaks for the water intake were observed: from 07:00 to 08:00, 1 hr after turning on the light source, and from 18:00 to 19:00, 1 hr before termination of the light source. the plasma angiotensin ii (aii) concentration also showed two peaks: one at 06:00, 1 hr before the light source was turned on, and another at 18:00, 1 hr before the light was turned off. the two plasma aii peaks e ... | 1985 | 3886477 |
| the effect of total body gamma-irradiation on mortality, egg production and egg weight of japanese quails. | male and female japanese quail 21 weeks old, that were given total body doses of 60co gamma-rays ranging from 0 to 30 gy, showed a peak in mortality at 6-8 days post-irradiation. the ld 50/30 was 22.5 gy, and the ld 90/30 was 26.7 gy. no differences were evident in mortality between males and females. the reduction in egg production by 30 days post-irradiation was related linearly to the dose, for doses above 6 gy. the reduction in egg weight (30 days post-irradiation laying period) was also rel ... | 1985 | 3888896 |
| an alcaligenes faecalis isolate from turkeys: pathogenicity in selected avian and mammalian species. | an alcaligenes faecalis isolate of known pathogenicity for turkeys was examined for adherence and cytotoxicity in tracheal organ cultures of turkeys, chickens, japanese quail, guinea pigs, hamsters, and mice, and for colonization and pathogenicity in these 6 species. adherence and colonization were detected by fluorescent antibody staining. infected and noninfected tracheal rings were examined by phase-contrast microscopy for cytotoxicity (ciliostasis, blebing of the cell membrane, and sloughing ... | 1985 | 3890634 |
| modification of growth and development of muscles of poultry. | growth curves of selected and unselected lines of broilers and japanese quail show that chicks respond to selection for 8-week or 4-week body mass, respectively, by increasing the exponential growth rate during the first 2 weeks after hatching. comparative studies indicate that growth rate varies among species of birds according to adult body mass, developmental maturity of the chick at hatching, and the postnatal growth increments of the skeletal muscles of the legs. differentiation of tissues ... | 1985 | 3900968 |
| vasotocin-immunoreactive elements and neuronal typology in the suprachiasmatic nucleus of the chicken and japanese quail. | a golgi study of the suprachiasmatic nucleus (scn) of the chicken and japanese quail revealed in this area a complex neuronal pattern and typology, including specialized dendritic patterns. immunocytochemical studies provided evidence for the existence of a vasotocinergic system within the scn, mainly in its rostral portion. other clusters of immunoreactive elements are located in the lateral and dorsal divisions of this nucleus; they show a different distribution in the chicken and japanese qua ... | 1985 | 3902247 |
| maintenance of proliferative capacity during avian myogenesis is independent of fusion-permissive calcium ion concentration. | skeletal muscle differentiation is normally accompanied by the permanent withdrawal of myogenic nuclei from the proliferative cycle. however, embryonic japanese quail (coturnix coturnix japonica) myoblasts which have been prevented from fusing in vitro by the addition of egta to the culture medium retain the capacity to re-enter the cell cycle following accumulation of muscle-specific myosin. we have therefore investigated the roles of ca2+ and fusion in the withdrawal of myogenic cells from the ... | 1985 | 3924639 |
| effects of chicken (gln8)- and mammalian (arg8)-luteinizing hormone-releasing hormones on the release of gonadotrophins in vitro and in vivo from the adenohypophysis of japanese quail. | both chicken luteinizing hormone-releasing hormone (gln8-lh-rh) and mammalian luteinizing hormone-releasing hormone (arg8-lh-rh) increased the release of fsh and lh from adenohypophysial halves of adult male japanese quail when the halves were incubated in a medium containing lh-rh. elevation of the fsh release was less marked than that of the lh release irrespective of the lh-rh species. a pulse stimulation (10 min) of adenohypophysial halves with chicken as well as mammalian lh-rh in vitro res ... | 1985 | 3926602 |
| biological parameters in japanese quail genetically selected for resistance or sensitivity to an acute hypoxic survival. | various biological parameters were measured in two strains of japanese quail selected for their resistance (ls+) or susceptibility (ls-) to an acute normobaric hypoxic challenge. adults of these two strains showed very little or no significant differences concerning body weights, carbon dioxide emission, photoperiodic (l----d and d----l) respiratory reactions, cloacal temperatures, heart rates and ecg qrsii amplitudes, red blood cell data, hemoglobin electrophoresis, and plasma corticosterone (b ... | 1985 | 3933475 |
| the rapid appearance of acid phosphatase activity at the developing ruffled border of parathyroid hormone activated medullary bone osteoclasts. | the localization of acid phosphatase (acpase) activity in and near parathyroid hormone (pth) activated osteoclasts was investigated using electron microscopic cytochemical methods. at 3 hours after oviposition in japanese quail hens, medullary bone osteoclasts were highly reactive for acpase but lacked ruffled borders. there was no evidence of extracellular acpase activity associated with these osteoclasts. at 20 minutes after pth administration, osteoclasts had developing ruffled borders and ac ... | 1985 | 3933792 |
| the relative potencies of l-t4 and l-t3 on the pituitary-thyroid axis in the japanese quail. | we have studied indirectly the relative contribution of the two thyroid hormones t4 and t3 to the feedback regulation of thyrotropin (tsh) secretion in quails, by means of the trh-test. adult euthyroid quails received a single injection of thyrotropin-releasing hormone (trh) (1 or 10 micrograms/100 g body wt) and were killed different times after. peak level of t4 occurred at 40 min and further served as the trh-test response. the administration of two different doses of t4 or t3 (0.5 or 2 micro ... | 1985 | 3934029 |
| comparative study on the cardiac actions of bovine parathyroid hormone (1-34). | the cardiac stimulatory effects of bovine parathyroid hormone (1-34) [bpth-(1-34)] were studied on isolated atria and ventricular strips from cobra snakes (naja naja), ducklings (anas platyrhynchos), pigeons (columba livia), japanese quails (coturnix coturnix japonica), laboratory rats (rattus norvegicus), and dogs (canis familiaris). in all atrial preparations, bpth-(1-34) caused positive chronotropism. this suggests that the chronotropic effect of pth is ubiquitous among the terrestrial verteb ... | 1986 | 3940926 |
| development of testosterone-metabolizing pathways in the avian brain: enzyme localization and characteristics. | metabolites formed from testosterone in the brain, their neuroanatomical distribution and the kinetic properties of the enzymes were studied in male and female japanese quail chicks and compared with the adult brain using an in vitro radioassay. oestradiol-17 beta. 5 alpha-dihydrotestosterone, 5 beta-dihydrotestosterone and 5 beta-androstane-3 alpha, 17 beta-diol were identified as metabolites of testosterone (t) in hypothalamic samples of 3-day-old quail. estimation of the km of hypothalamic ar ... | 1986 | 3948030 |
| diluting segment in avian kidney. i. characterization of transepithelial voltages. | renal tubules from the japanese quail, coturnix coturnix, were perfused in vitro to characterize the transepithelial voltage (vt). the thick limb (tl) of the mammalian-type (mt) nephron showed vt positive in the lumen (+9.1 +/- 0.7 mv, n = 35). the vt decreased with increases in hydrostatic perfusion pressure. furosemide (lumen), na cyanide (bath), and ouabain (bath) reversibly reduced vt. removal of cl or na from the perfusate and the bath decreased vt of the tl from +10.3 +/- 3.0 to -0.3 +/- 0 ... | 1986 | 3953845 |
| diurnal variations of sexual receptivity in the female japanese quail (coturnix coturnix japonica). | a series of experiments was performed to study the changes during the day of female receptivity in japanese quail. in each experiment, the frequency of squatting and the percentage of male approaches which were followed by squatting increased at the end of the day, approximately 11 to 13 hr after lights on (in a photoperiod of 16l:8d). in some cases this increased receptivity was associated with a significant decrease of the long-avoid frequency. analyses are presented which demonstrate that the ... | 1986 | 3957258 |
| a sexually dimorphic nucleus in the quail preoptic area. | the cytoarchitectural analysis of the preoptic-anterior hypothalamic region of the japanese quail reveals a sexual dimorphism in the total volume of the medial preoptic nucleus (significantly larger in males than in females). different nuclei of the region (dorsal preopticus, suprachiasmaticus) do not show any statistically significant difference. the sex-related difference is more consistent comparing the distribution of dark volume. this last is due to a larger number of cells containing high ... | 1986 | 3960396 |
| rhodopsin-like sensitivity of extra-retinal photoreceptors mediating the photoperiodic response in quail. | it has been known for some 50 years that birds use photoreceptors in or near the hypothalamus to mediate the photoperiodic responses that control seasonal breeding. so far, however, attempts to identify the photopigment by determining an action spectrum have failed. the problems stem from the selective filtering of light by the tissues surrounding the photoreceptors and the need to deliver defined amounts of light over the days or weeks required to induce a quantitative measure of photostimulati ... | 2008 | 3965970 |
| the crystal and molecular structure of the third domain of silver pheasant ovomucoid (omsvp3). | omsvp3 and omtky3 (third domains of silver pheasant and turkey ovomucoid inhibitor) are kazal-type serine proteinase inhibitors. they have been isomorphously crystallized in the monoclinic space group c2 with cell dimensions of a = 4.429 nm, b = 2.115 nm, c = 4.405 nm, beta = 107 degrees. the asymmetric unit contains one molecule corresponding to an extremely low volume per unit molecular mass of 0.0017 nm3/da. data collection was only possible for the omsvp3 crystals. orientation and position o ... | 1985 | 3971987 |
| thyroid and adrenal response to heat stress in chickens and quail differing in heat tolerance. | three experiments were conducted to evaluate the thyroid and adrenal response in groups of birds with altered heat tolerance. groups of chickens that had been handled on each of 4 days and a nonhandled control group were bled on the 5th day with or without heating for 1 hr at 50 c. handling did not affect the thyroid response as indicated by thyroxine (t4) or triiodothyronine (t3) levels. corticosterone levels were lower in handled birds than nonhandled birds after heating. in a second experimen ... | 1985 | 3975193 |
| effect of cyclic sound cues on sexual development in nonphotostimulated japanese quail. | the influence of cyclic ambient sound stimuli on sexual development was studied in nonphotostimulated [6 hr light:18 hr dark (16l:18d)] japanese quail (coturnix coturnix japonica). the incidence of accelerated gonadal development was reduced when ambient daily sound stimuli were attenuated by the presence of a white noise mask in the animal quarters. in a second experiment nonphotostimulated (9l:15d) male quail showed a phase-dependent testicular response to a daily 3-hr radio broadcast presente ... | 2014 | 3975196 |
| constitutional biases in early perceptual learning: iii. similarities and differences between artificially selected and imprinted color preferences in quail chicks (coturnix coturnix japonica). | color preferences and preference generalization were tested in naive and imprinted japanese quail chicks drawn from the 20th generation of a genetic control line and two genetic lines that were bidirectionally selected for preferences between blue and red. twelve hours of imprinting to blue or red on the first posthatch day resulted in large preference changes in the genetic controls, and these subjects exhibited no or only small additional changes from 3 more days of imprinting (for the total o ... | 1985 | 3979028 |
| does neonatal gonadectomy affect the sexual differentiation of quail? | this experiment was designed to determine the contribution, if any, of posthatching gonadal hormones to sexual differentiation of behavior in japanese quail (coturnix coturnix japonica). males and females were gonadectomized or sham-operated (controls) prior to age 7 days posthatching. at age 4-9 weeks controls were gonadectomized. all birds were then given 2 weeks of testosterone propionate injections and tested for sexual behavior with female partners. neonatally gonadectomized females exhibit ... | 1985 | 3979971 |
| the effect of tetrachlorohydroquinone on hexachlorobenzene-induced porphyria in japanese quail. | female japanese quail received either hexachlorobenzene (hcb, 100 mg/kg . d) or tetrachlorohydroquinone (tchq, 175 mg/kg . d) for 10 d as a primary treatment. following this, a secondary treatment of hcb (100 mg/kg . d) or tchq (175 mg/kg . d), alone or in combination, was administered for 1, 5, 10 or 15 d. the primary hcb treatment caused elevated delta-aminolevulinic acid synthetase (ala-s) activities and small increases in porphyrin concentrations. subsequent treatment of these birds with lac ... | 2014 | 3981665 |
| a comparison of the effects of hexachlorobenzene, beta-naphthoflavone, and phenobarbital on cytochrome p-450 and mixed-function oxidases in japanese quail. | hexachlorobenzene (hcb), beta-naphthoflavone (bnf), or phenobarbital (pb) was administered to japanese quail to determine their effects on hepatic porphyrin levels and drug-metabolizing enzymes. while hcb increased porphyrin levels, pb slightly reduced them, and bnf had no effect. hcb was an excellent inducer in quail, increasing the specific content of cytochrome p-450 to levels similar to those produced by bnf. additional similarities between hcb- and bnf-treated quail included a comparable hy ... | 1985 | 3981666 |
| injection of diethylstilbestrol on the first day of incubation affects morphology of sex glands and reproductive behavior of japanese quail. | japanese quail eggs were injected with des (0.9-1,000 micrograms) dissolved in 50-microliter of corn oil on day 1 of incubation. higher doses of des (250-1,000 micrograms) reduced hatchability to 37-33% compared to 61% for corn oil-injected controls. lower doses of des (0.9-125 micrograms) had no effects on hatchability. in a second study, eggs were injected with 0.9 or 1.9 micrograms of des and the survivors were assessed up to 12 weeks posthatch. des did not affect hatchability, but did increa ... | 1985 | 3983852 |
| effect of progesterone on the sexual behavior of the male japanese quail. | the reduced metabolites of testosterone produced in the central nervous system of birds are known to be involved in the regulation of male sexual behavior. since progesterone may compete with testosterone for 5 alpha- and 5 beta-reduction, it may also interfere with the sexual behavior of birds. in order to test this hypothesis, progesterone was administered to male quail either transferred from short days to long days or kept in short days and treated with testosterone. sexual behavior and crow ... | 1985 | 3988019 |
| photoperiodic requirement for the dissipation of scotorefractoriness in japanese quail. | male japanese quail were reared on short days (6l:18d) and at 15-20 weeks of age those which had become sexually mature (i.e., scotorefractory) were transferred to long days (18l:6d) for between 2 and 29 weeks. the birds were then returned to 6l:18d for 3 weeks to test for the dissipation of scotorefractoriness. this was assessed by a decrease in at least 3 of 4 indices of reproductive function: testicular weight, area of the cloacal gland, and levels of plasma lh and testosterone. there was gre ... | 1985 | 3988034 |
| comparative responses of genetically resistant and nonselected japanese quail to dietary aflatoxin. | two lines of japanese quail (ar2.5 and ar3) selected for resistance to aflatoxin and a nonselected control line (ns) were fed diets containing 0, 10, and 20 micrograms of aflatoxin/g of feed. line-related reductions in mortality and growth inhibition clearly demonstrated the resistance of the ar lines to dietary aflatoxin. two-week cumulative mortality percentages for the ns, ar2.5, and ar3 lines fed the 10 micrograms/g diet were 13.9, 7.7, and 2.6%, respectively, and 44.4, 17.9, and 12.8% at 20 ... | 1985 | 3991413 |
| activation of avian medullary bone osteoclasts by oxidized synthetic parathyroid hormone (1-34). | synthetic bovine parathyroid hormone (1-34) [bpth(1-34)] has been treated with hydrogen peroxide and assayed for the effect of such treatment on the ability of bpth(1-34) to activate medullary bone osteoclasts during their quiescent period in the early phase of the ovulatory cycle in japanese quail. in addition, the same batches of oxidized and unoxidized bpth(1-34) were assayed for their hypercalcemic activity in japanese quail and their capacity to stimulate renal adenylate cyclase activity in ... | 1985 | 3991595 |
| experimental studies of st. louis encephalitis virus in vertebrates. | serologically negative birds and mammals of species, known from other studies to be exposed naturally to st. louis encephalitis (sle) virus in memphis, tennessee, and other selected species were inoculated experimentally with strains of sle virus to determine their potential as natural hosts. mosquitoes (culex sp.) were allowed to feed on some of the inoculated vertebrate species, held for 14 days, and tested for sle infection. the cardinals (richmondena cardinalis), robins (turdus migratorius), ... | 1985 | 3999258 |
| effects of prochloraz on drug metabolism in the japanese quail, grey partridge, chicken, and pheasant. | 1985 | 4004337 | |
| a model for avian lung ventilation, and the effect of accelerating stimulation in japanese quail embryos. | a simple stages model is proposed for the interval between the start of lung ventilation and the start of clicking in japanese quail embryos. the model is extended to describe the effect of accelerating stimuli and is fitted to data sets from three different experiments. we see that the model provides a useful synthesis of the variety of results, and furnishes a framework for the analysis of further experiments. | 1985 | 4005376 |
| morphology of the cataract in albino mutant quails (coturnix coturnix japonica). | morphological changes in cataractous albino quail lens were studied by light microscopy. in some animals, a pin-head opacity in the lens could first be detected with the naked eye 2 months after hatching. faint anterior or posterior cortical opacity was observed in many lenses at 3 months of age. most lenses had turned opaque 12 months after hatching. lens dimensions were markedly enlarged at 6 months of age. vacuoles were present in the posterior surface just beneath the capsule and equatorial ... | 1985 | 4007071 |
| postnatal growth and organ development in japanese quail selected for high growth rate. | as a result of selection for high growth rate in the quail the organ growth pattern has changed considerably. the main change, which characterizes the early part of the postnatal growth, consists of an increased relative size of the digestive organs and a lowered early growth rate of pectoral muscles and feathers. since the increase in growth rate is linked to an increase in the relative size of the digestive organs, the growth rate is most likely restricted by the capacity to ingest and digest ... | 1985 | 4007580 |
| the influence of dietary salt on water consumption and carcass lipids in japanese quail. | studies were conducted to investigate the influence of dietary salt on water consumption and subsequent carcass lipids in japanese quail at various ages. in experiment 1, randombred nongrowth-selected (c) quail were fed 28% protein diets containing .0, .4, .8, 1.6, and 3.2% added salt. in experiment 2, growth-selected p- and c-line quail were fed 20%-protein diets containing .4% and 3.2% added salt. the different dietary salt levels did not exert a consistent effect on body weight in experiment ... | 1985 | 4022902 |
| whole brain acetylcholinesterase activity in lead-exposed japanese quail. | a study was conducted in which male and female japanese quail were fed dietary lead as lead acetate from hatch through 12 weeks of age. lead was added to the diet at 0, 1, 10, 100, and 1000 mg/kg feed. significant reductions in whole brain acetylcholinesterase (ache) activity were found at all treatment levels. additionally, a sexual dimorphism in brain weight and ache activity was found. breeding males had heavier brain weights and lower ache activity than females. brain weight was not affected ... | 1985 | 4022911 |
| dietary induction of hypercholesterolemia and atherosclerosis in japanese quail of strain sea. | groups of 12 male japanese quail (coturnix coturnix japonica) of a strain susceptible to experimental atherosclerosis (sea) were fed one of three purified diets (one basal and two atherogenic) for 8 wk. the basal diet contained: glucose (46%), soy protein (35%) and beef tallow (10%). atherogenic diets were prepared by replacing glucose with either 1% cholesterol or 1% cholesterol plus 0.5% cholic acid. both atherogenic diets induced hypercholesterolemia, with serum cholesterol increased 202 and ... | 1985 | 4032062 |
| hexachlorobenzene-induced porphyria in japanese quail: changes in microsomal enzymes. | hexachlorobenzene (hcb) was administered orally (500 mg/kg d) for 1, 2, 5, or 10d) to sexually mature japanese quail to compare altered hepatic porphyrin levels with changes that occur in hepatic xenobiotic metabolizing enzymes. porphyrin levels rapidly increased following the administration of hcb (three times control levels after a single dose of hcb), and birds began to develop porphyria (i.e., porphyrin levels were at least 10 times higher than controls) following 5 d of treatment. following ... | 1985 | 4032490 |
| ontogeny of aggressive-sexual behavior between males in lines of japanese quail (coturnix coturnix japonica) selected for male mating frequency. | japanese quail from lines bidirectionally selected for high and low male mating frequency and from the random-bred base population were observed in an ontogenetic study of aggressive-sexual behavior. quail were reared in sex-intermingled flocks until 28 days of age at which time half of the males from each line were housed as all-male flocks and half were transferred to individual cages. at 41 days of age, individually caged males exhibited mounting behavior to win encounters with other males. b ... | 1985 | 4038930 |
| effects of chronic high-level manganese exposure on male behavior in the japanese quail (coturnix coturnix japonica). | male japanese quail were chronically exposed to 5000 ppm manganese (mn) as particulate manganese oxide (mn3o4) in their diet from hatching to 75 days of age. no decrements in growth or in other indices of general toxicity were noted. there were significant (p less than .05) age-related increases in general locomotor activity in the control group, although no significant (.05 less than p less than .10) increases were seen in the mn-treated group. both control and mn-treated groups had significant ... | 1985 | 4039439 |
| nadh-ferrihemoglobin reductase in avian erythrocytes. | the assay for nadh-ferrihemoglobin reductase (nadh-fr) was optimized for avian blood samples. in this assay the ph optimum for japanese quail red cell nadh-fr was 5.5, which was close to the enzyme's pi. enzyme kinetic parameters were determined for quail, chicken and turkey nadh-fr. preparation of erythrocyte ghost-cells and subsequent fractionation showed that the enzyme was present in the plasma membrane as well as in the nuclear membrane, while triton x-100 treatment gave a release of enzyme ... | 1985 | 4042621 |
| myotube clusters do not bear any quantitative relation to the extent of motoneuron survival. | we conducted a quantitative study of the trochlear motoneurons and the myotube clusters in the corresponding superior oblique muscle of the japanese quail, before, during, and after the period of normally occurring motoneuron degeneration. a ratio of approximately 1:1 between myotube clusters and neurons was observed at the onset of motoneuron degeneration. the number of myotube clusters prior to neuron death was 37% greater than the number of neurons surviving after cell death. these results ar ... | 2009 | 4043300 |
| retinal modulation of the hypothalamic sensitivity to testosterone feedback in photoperiodism of quail. | this experiment was performed on two groups of male japanese quail. one had been maintained in our laboratory as a closed colony (s-group), and the other had been obtained from a commercial source (r-group). different responses of gonadal function were found between two groups following either testosterone treatment or exposure to short days. immature birds of these groups responded to long days with rapid gonadal growth, but after sexual maturity, exposure to short days for 3 weeks induced test ... | 1985 | 4043720 |
| tectal neurons projecting to the isthmo-optic nucleus in the japanese quail. | horseradish peroxidase (hrp) injected into the isthmo-optic nucleus (ion) of the japanese quail retrogradely labeled neurons in the ipsilateral optic tectum. some of these neurons exhibited a characteristic 'willow-like' appearance. somata of these neurons were round or pyriform, usually located in lamina h of the stratum griseum et fibrosum superficiale (sgfs), and emitted several thin dendritic branches that ramified in the deeper laminae of sgfs but not in the retinal recipient laminae of sgf ... | 1985 | 4047497 |
| dispersal of estradiol-17 beta from the site of injection in the pectoral muscles of japanese quail. | exogenous estrogens, if given in sufficient quantity, stimulate vitellogenesis in the males of vitellogenic species. in the present study, ethanolic solutions of estradiol-17 beta (e2), labeled with 16-alpha-[125i]iodoestradiol ([125i]e2) or sodium iodide (na125i), were injected into the pectoral muscles of male japanese quail. the rate of dispersal of the estradiol from the site of injection was measured in vivo during 4 days. the curves of radioactivity appeared to be diphasic. the dose percen ... | 1985 | 4048065 |
| hematological response of immunized and serially bled japanese quail. | sexually mature female japanese quail (coturnix coturnix japonica) were immunized by an intravenous injection with .5 ml of a 7.5% suspension of chukar partridge (alectoris graeca chukar) red blood cells (crbc). blood samples were collected either serially from one group of quail or a single time from separate groups of quail at 0 (nonimmunized), 3, 6, and 9 days post-immunization. total anti-crbc hemagglutinin titers (ha) were measured by a microhemagglutinin procedure. selected hematological v ... | 1985 | 4048067 |
| acute changes in plasma steroids and agonistic behavior in male japanese quail. | a systematic analysis of the acute (minutes to hours) fluctuations of plasma steroids [androstenedione (a), 5 alpha-dihydrotestosterone (dht), testosterone (t), corticosterone (b)] was investigated in relation to the fighting behavior displayed by experienced male japanese quail (coturnix coturnix) in short-term (2 min) dyadic encounters. plasma levels of hormones measured in competitors either 1 hr before, during, or 3 min to 6 hr following a fight related poorly to either the attacking or nona ... | 2013 | 4054584 |
| chicken developmental antigens: analysis of erythroid populations with monoclonal antibodies. | fusions were performed between the mouse pai myeloma cell line and spleen cells from balb/c mice immunized with intact erythrocytes from 1-day cornell k-strain white leghorn chickens. following single cell cloning, four hybridoma clones were found to secrete erythroid specific monoclonal antibodies. based on its pattern of reactivity, the antibody (igg2a, kappa) secreted by clone 10c6 detects a specific avian oncodevelopmental antigen associated with the hematopoietic system: chicken fetal antig ... | 1985 | 4056682 |
| metabolism of steroid hormones in vitro by follicular tissues of the japanese quail. | the cell-free homogenates of the theca layers and granulosa layers of quail follicles were incubated at 39 degrees c with 14c-labeled steroids in the presence of nadph. at the end of incubation, radioactive steroids were extracted and analyzed by thin-layer chromatography. when radioactive progesterone was employed as the substrate, 17 alpha-hydroxyprogesterone and androstenedione were obtained as the metabolites. 17 alpha-hydroxylase activity, estimated from the amounts of these two metabolites ... | 1985 | 4063434 |
| influences of thyroidectomy and thyroxine replacement on photoperiodically controlled reproduction in quail. | the breeding season in quail ends when they become relatively refractory to long photoperiods. the processes underlying the development of this refractoriness are dependent upon the thyroid gland. thyroidectomized male japanese quail transferred from short (8 h light: 16 h darkness; 8l: 16d) to long (20l:4d) daily photoperiods mature their gonads and develop the androgen-dependent cloacal gland at rates only marginally slower than controls. however, when the birds are retransferred to short days ... | 1985 | 4067480 |
| circadian rhythm of melatonin in the pineal gland of the japanese quail (coturnix coturnix japonica). | melatonin was measured by radioimmunoassay in homogenates of pineal glands from quail (coturnix coturnix japonica) kept under different photoperiods and in darkness. under 8-, 12- and 16-h daylengths melatonin levels were increased during the dark period, the duration of the increase depending on the duration of the dark period. as the daylength was increased the peak occurred closer to lights-off, reflecting the more rapid melatonin rise under the longer photoperiods. the pineal melatonin rhyth ... | 1985 | 4067487 |
| blood sampling from the venous occipital sinus of birds. | venous occipital sinus blood sampling was demonstrated to be an effective nonlethal method in all species tested including ducks, geese, chukar partridge, japanese quail, pea-fowl, pheasants, parakeets, turkeys, and chickens. maximum blood volume obtained from the occipital sinus of 1-day-old chicks equalled the volume obtained by cardiac puncture and exceeded the volume collected by decapitation. venous occipital sinus puncture was successfully used to rapidly collect several successive blood s ... | 1985 | 4070124 |
| effect of phlebotomy on reticulocyte numbers in japanese quail. | hematological changes were studied in response to a phlebotomy of 30% of the estimated total blood volume in 5-week-old coturnix coturnix japonica. blood samples, femoral bone marrow samples, and blood and marrow erythroid cell differential counts were collected at 0 (nonphlebotomized), 1, 3, 6, 24, and 72 hr postphlebotomy. the samples were collected only once from each bird. total peripheral erythrocyte numbers, percent hematocrit, and hemoglobin levels were decreased at 1, 3, 6, and 24 hr. th ... | 1985 | 4070133 |
| encephalitis attributed to dactylariosis in japanese quail chicks (coturnix coturnix japonica). | dactylaria gallopava was isolated from brain tissue of 1-to-3-week-old quail chicks. successive batches demonstrated elevated (15-20%) mortality preceded by incoordination and lateral recumbency. chicks exhibited cerebellar and cerebral encephalitis characterized by brown-red discoloration of affected brain tissue. decontamination of setters and hatchers resulted in abrupt cessation of mortality in subsequent placements, implicating incubators as the source of infection. | 1985 | 4074247 |
| peripheral blood changes of the japanese quail coturnix coturnix japonica following repeated small doses of trichlorfon. | 1985 | 4074943 | |
| nucleoside incorporation as a function of hormone levels during the early phases of estrogen-induced genesis of medullary bone in the japanese quail, coturnix coturnix. | the sequence of changes in rna synthesis during the early phases of genesis of medullary bone induced in male japanese quail by estrogen treatment was studied by 3h-uridine uptake. analyses of plasma estrogen and testosterone were done by radioimmunoassay at 12, 24, 38 and 61 h. a dose of 5 mg kg-1 estradiol-17 beta was found to stimulate the same 3h-uridine uptake 15 h after hormone treatment as a dose of 20 mg kg-1 of estradiol valerate. the uptake of 3h-uridine rose as the dose of estradiol-1 ... | 1985 | 4075376 |
| life cycle and biology of eimeria lettyae sp. n. (protozoa: eimeriidae) from the northern bobwhite, colinus virginianus (l.). | a new species of coccidium, eimeria lettyae sp. n. (protozoa: eimeriidae) was recovered from feces of the northern bobwhite, colinus virginianus (l.), from pennsylvania and florida. oocysts measured 21.1 microns (16.4 to 25.8) by 17.2 microns (14.1 to 21.2); index (l/w ratio) = 1.22. oocysts lacked a micropyle, residuum, and polar granules. sporozoites penetrated the upper 1/2 of the villi, then moved to the lamina propria at the base of the villi. there were five asexual generations, all of whi ... | 1985 | 4078970 |
| brain cholinesterase activity in starlings and japanese quail dosed with methiocarb. | 2014 | 4078991 | |
| high performance liquid chromatographic analysis of long chain bases in intestinal glycolipids of adult and embryonic japanese quails. | a new sensitive assay method for sphingoids, 4-d-hydroxysphinganine, sphingosine, and sphinganine, involving reversed phase hplc was described. chromatography of p-n-nitrophenylacetyl derivatives of the sphingoids showed sufficient resolution, and each peak showed a linear relationship between molar quantity and area response, from 10 pmol to 10 nmol. the method was applied to the analysis of long chain bases in intestinal glycolipids from embryonic and adult japanese quails. at the embryonic st ... | 1985 | 4086479 |
| the distribution of 14c-chloramphenicol in the japanese quail (coturnix coturnix japonica). | the distribution of 14c-labelled chloramphenicol after oral and intravenous administration to egg laying japanese quail was studied by whole-body autoradiography. in the liver, kidneys, gizzard, intestinal contents (bile) and oviduct, the 14c-concentration was higher than that of the blood short time after injection and remained higher than the blood up to 4 days. from 4 hrs, the concentration of 14c in the egg yolks was higher than that of the blood and from 24 hrs the radioactivity in the albu ... | 1985 | 4090996 |
| [atheromatosis in the japanese quail. experimental model]. | 1985 | 4092765 | |
| increased clearance rate of plasma thyroxine accompanies estradiol-induced vitellogenesis in male japanese quail. | four days after giving 16 mumol estradiol-17 beta (e2) per 100 g body weight to male japanese quail, the thyroids of these quail accumulated twice as much 125i as did the thyroids of control quail. plasma thyroxine concentrations were 7.38 +/- 45 (se) ng/ml (n = 16) for the e2-treated quail and 3.38 +/- .53 ng/ml (n = 16) for the controls. clearance rates of plasma thyroxine were 534 ng thyroxine/100 g/day for the e2-treated quail and 234 ng/100 g/day for the control quail. the e2 may have incre ... | 1985 | 4095073 |
| an investigation into the role of the crop in control of feeding in japanese quail and domestic fowls. | with normal diets, removal of the crop in japanese quail and domestic fowls caused reductions in mean meal lengths and sizes, and compensatory increases in meal frequencies, only in those (30-40%) birds that had previously eaten larger, less frequent meals. sham operation had no such effect. cropectomy had less effect on feeding activity parameters when quail were fed on a diluted (40% cellulose) diet, and had no effect on diurnal patterns of feeding with either undiluted or diluted food (all bi ... | 1985 | 4095184 |
| structural and antigenic relationships between avian immunoglobulins. 3. antigenic relationships of the immunoglobulins of the chicken, pheasant and japanese quail. | 1970 | 4099923 | |
| carbon uptake response by sertoli cells and epithelial cells lining the duct system of the japanese quail (coturnix coturnix japonica). | 1971 | 4101366 | |
| [comparative ultrastructural study of the interphasic nucleus in the quail (coturnix coturnix japonica) and the chicken (gallus gallus) by the regressive edta staining method]. | 1971 | 4103859 | |
| formation of secondary neurohemal organs in the median eminence of the white-crowned sparrow and japanese quail. | 1969 | 4103862 | |
| toxicity of hexachlorobenzene in japanese quail with special reference to porphyria, liver damage, reproduction, and tissue residues. | 1971 | 4105631 | |
| effects of different classes of pesticides on pentobarbital anesthesia and toxicity in japanese quail. | 2014 | 4118448 | |
| a modified methenamine silver method for staining aorta from japanese quail for transmission electron microscopy. | 1973 | 4122797 | |
| [intense staining of the layer of "wedge granules" in the premature oocytes of the japanese quails (coturnix coturnix japonica) after injection with h3-l-leucine]. | 1973 | 4125104 | |
| genetic resistance to ddt in the japanese quail coturnix coturnix japonica. | 1973 | 4127763 | |
| mergamma db and phenylmercuric acetate: their effect on the reproduction of japanese quail (coturnix coturnix japonica temminck and schlegel). | 1974 | 4131727 | |
| size correlations between heterochromatin and nucleolus during interphase in the quail, coturnix coturnix japonica. | 1974 | 4132900 | |
| chemical porphyria in japanese quail (coturnix c. japonica). | 1973 | 4133879 | |
| use of dna-dna annealing to detect new virus-specific dna sequences in chicken embryo fibroblasts after infection by avian sarcoma virus. | labeled, virus-specific dna synthesized in vitro by the virion-associated polymerase of avian sarcoma virus (asv) was used to measure virus-specific sequences in cell dna in three ways: (i) by determining the effect of cell dna upon the reassociation rate of double-stranded polymerase products; (ii) by measuring the kinetics of annealing of single-stranded polymerase product (cdna) to cell dna; or (iii) by measuring the amount of cdna which anneals to a large excess of cell dna. with these three ... | 1974 | 4138674 |
| dietary cadmium and enteropathy in the japanese quail: histochemical and ultrastructural studies. | 2014 | 4140260 | |
| [lindane effects in several generations on the fertility and embryonic mortality levels, the hatchability, the egg production and the egg and chicken weight(author's transl)]. | the pulverization of japanese quail eggs with a solution of commercial lindane has a repercussion on fertility, embryonic mortality, hatchability, egg production, eggs and quail-chickens weight (studies in for generations). | 1974 | 4143387 |
| photoperiods and age as factors modifying the effects of kepone in japanese quail. | 1974 | 4143754 | |
| cyclical fluctuations in the levels of blood calcium, ph and pco 2 in japanese quail. | 1973 | 4145525 | |
| effects of diphenylhydantoin upon estrogen metabolism by liver microsomes of ddt-treated japanese quail. | 2014 | 4148808 | |
| effects of cystine, niacin and taurine on cholesterol concentration in the japanese quail with comments on bile acid metabolism. | 1974 | 4151634 | |
| thyroxine and triiodothyronine turnover in the chicken and the bobwhite and japanese quail. | 1967 | 4170364 | |
| the anterior pituitary of the japanese quail, coturnix coturnix japonica. the cytological effects of photoperiodic stimulation. | 1968 | 4184748 | |
| the influence of progestational agents on ovulation in the japanese quail (coturnix coturnix japonica). | 1969 | 4190600 |