Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| cholesterol blocks the disordering effects of ethanol in biomembranes. | to assess the relation between the physical order of a membrane and its sensitivity to ethanol, we enriched biomembranes with cholesterol, both in vivo and in vitro. japanese quail of the sea line (selectively bred for susceptibility to experimental atherosclerosis) were treated for 9 to 16 weeks with a diet that contained 2% cholesterol. this regimen increased the cholesterol content of serum and erythrocytes. the cholesterol content of brain synaptosomal plasma membranes (spm) was unaffected b ... | 1984 | 6527612 |
| histopathological changes of the retina and optic nerve in the albino mutant quail (coturnix coturnix japonica). | histopathological changes in the retina and optic nerve in imperfect albino mutant quails with a sex-linked recessive gene were studied ontogenetically. the mutant quail showed eye enlargement 3 months after hatching. the eyes exhibited hazy corneas, lens opacities and deep anterior chambers at 18 months of age. some ganglion cells in the retina and axons in the optic disc began to degenerate 6 months after hatching. there were many deformed or fragmented ganglion cells at 12 months of age, and ... | 1984 | 6470227 |
| immunological traits in generations 7 to 12 of two lines of japanese quail selected for high or low antibody response to newcastle disease virus. | several immunological traits were compared in lines of japanese quail selected for high and low secondary immune responses to anti-newcastle disease virus (ndv). the high line of quail, selected for high ability to produce antibodies, was more responsive in both their primary response to ndv antigen used in the selection as well as to other antigens used in selection process including ndv (ishi strain), tissue culture-derived newcastle disease (tcnd strain), ndv strain b1, influenza virus, sheep ... | 1984 | 6473242 |
| regressive post-hatching development of acetylcholinesterase-positive neurons in the pineal organs of coturnix coturnix japonica and gallus gallus. | distribution and number of acetylcholinesterase-positive neurons were studied in the japanese quail and the domestic fowl during the post-hatching period by means of the acetylcholinesterase method. for comparison, the development of the catecholamine-containing (sympathetic) pinealopetal fibers of the domestic fowl was demonstrated with the use of the glyoxylic acid method. the number of acetylcholinesterase-positive ganglion cells in the pineal organs of both avian species decreased rapidly af ... | 1984 | 6478494 |
| free thyroid hormones in altricial (ring doves) versus precocial (japanese quail) development. | ring doves (altricial development) and japanese quail (precocial development) were used as models to compare differences in serum free hormone concentrations and the binding of thyroid hormones to serum protein fractions in adults, and the pattern of free thyroid hormones in the serum of altricial vs. precocial young. total and free hormones were determined directly by ria; free hormones also were determined by equilibrium dialysis. binding protein fractions were identified by electrophoresis of ... | 1984 | 6499764 |
| biological activity of glycosides of vitamin d3 and 1 alpha-hydroxyvitamin d3. | for the first time, the biological activity of the newly synthesized glycosides of vitamin d3 and of 1 alpha(oh)d3 has been studied in rats, chickens, and japanese quails. glucosidation did not reduce the activity of vitamin d3. in chickens, vitamin d3 glucoside has an activity of 90% to 95% as compared to the aglycon. in rats vitamin d3 glucoside is equally active when given by intravenous or oral route. glycosides of 1 alpha (oh)d3, however, show a lower activity in rats, chickens, and quails. ... | 1984 | 6547411 |
| molecular characterization of fetal antigens on red blood cells of chickens, japanese quail, and quail-chicken hybrids. | the molecular nature of chicken fetal antigen (cfa) and quail fetal antigen (qfa) was studied on embryonic red blood cells (rbcs) of the chicken, the japanese quail, and the quail-chicken hybrid. specific immunoprecipitation of radiolabeled membrane proteins followed by electrophoretic separation and autoradiography were used to identify the protein molecules carrying these fetal antigens. cfa was found on molecules of 24, 50, 88, 99, 130, 170, and 220 kd (kilodaltons) in the chicken and hybrid ... | 1984 | 6517850 |
| comparative analysis of the development of wing-flapping and flight in the fowl. | the development of wing-flapping rate, lateral flight, wing area, and the ratio of wing area to body weight are described in the japanese quail (coturnix coturnix japonica) and three chickens (gallus gallus) to determine common developmental phenomena and to assess the effects of domestication. the chickens were the white leghorn (a commercial egg producer), the cornish x rock (a commercial meat producer), and the red jungle fowl (the probable ancestor of domestic chickens). all birds performed ... | 1984 | 6698309 |
| mineral content of quail embryos cultured in mineral-rich and mineral-free conditions. | japanese quail embryos were cultured in mineral rich (mr) using chickens egg shell and mineral-free (mf) using saran wrap cultures after 2.5 days of normal incubation. in the mr culture, 82% of embryos survived beyond 14.5 days of incubation and 3 embryos out of 93 (3%) hatched. in the mf culture, 80% survived beyond 9.5 days and 59% beyond 14.5 days. mineral content (ca, mg, k, and na) of the embryos and of the residual matter within the egg (remaining egg contents excluding the embryo, shell, ... | 1984 | 6701139 |
| growth hormone, thyroxine, and triiodothyronine levels of japanese quail selected for four-week body weight. | plasma growth hormone (gh), triiodothyronine (t3), and thyroxine (t4) levels were compared in four lines of japanese quail (c,p,t, and s) from 1 to 4 weeks of age in two experiments. lines p and t were derived from line c by 59 generations of selection for high 4-week body weight. line p was selected under the same nutritional regimen as line c (28% protein) while line t was selected under a restricted protein (20%) ration containing .2% thiouracil. line s was developed as a subline from t by co ... | 1984 | 6709562 |
| uterine relaxing action of parathyroid hormone: effect of oxidation and methionine substitution. | the effects of bpth-(1-34), oxidized bpth-(1-34),[nle8,nle18, tyr34] bpth-(1-34) amide, and oxidized [nle8,nle18,tyr34]bpth-(1-34)amide were tested in an in vitro rat uterine assay. when bpth-(1-34) was treated with hydrogen peroxide (h2o2), the ability of this peptide to reduce oxytocin-stimulated uterine contraction in vitro was no longer evident. an analogue of bpth-(1-34), in which the methionines at positions 8 and 18 were replaced with norleucine ([nle8,nle18,tyr34]bpth-(1-34)amide), was c ... | 1984 | 6709644 |
| selective breeding for high and low antibody responses to inactivated newcastle disease virus in japanese quails. | two lines of japanese quail were divergently selected for high and low antibody responses after being twice injected at 4 and 6 weeks of age with inactivated newcastle disease virus antigen. after seven generations of selection, the serum antibody level in the high line was 24% greater than the level in the unselected control lines, whereas the low line antibody level was approximately 37% less than that in the control line. the estimated heritability (h2s + d) was approximately .12 +/- .50. the ... | 1984 | 6728759 |
| age and body weight at sexual maturity in female white leghorn chickens. | age and body weight at sexual maturity were measured in females from two lines of white leghorns known to differ in these traits. within-line correlations between age and body weight at sexual maturity were not different from zero. the data demonstrated that egg-type chickens must reach a minimum age and body weight before commencing egg production - results consistent with those obtained for meat-type chickens and japanese quail. | 1984 | 6728783 |
| a comparison of the distributions of the actinides uranium and thorium with the lanthanide gadolinium in the tissues and eggs of japanese quail: concentrations of uranium in feeds and foods. | japanese quail were given ucl3 , uo2 (no3)2, th(no3)4, or gdcl3 ( 153gd -labeled) intravenously in aqueous solution. distribution of th among the tissues was as for gd; distributions of u(iii) and u(vi) were markedly different. for example, 18 hr after a 1.5 mumol/100 g dose, accumulations in females were: growing oocytes, u(iii) 2.0%, u(vi) 2.4%, th 27.7%, gd 44.7%; leg bones, u(iii) 12.5%, u(vi) 14.1%, th 1.2%, gd 1.4%; liver, u(iii) 1.1%, u(vi) 1.1%, th 44.0%, gd 40.2%. whole body losses by 1 ... | 1984 | 6728797 |
| pathogenicity of coccidia in japanese quail (coturnix coturnix japonica). | coccidia were recovered from a field outbreak in commercially raised japanese quail from south carolina. after propagation in unmedicated quail, the culture was identified as a mixture of approximately 65% eimeria uzura, 33% e. tsunodai, and 2% e. taldykurganica. several pure cultures of e. uzura were obtained by single oocyst isolation. a micropyle was not present in all oocysts; thus, it is not a reliable taxonomic characteristic for identification of e. uzura. neither the mixed culture nor th ... | 1984 | 6701143 |
| the expression of marek's disease tumour-associated surface antigen in various avian species. | marek's disease tumour-associated surface antigen (matsa) was detected on lymphoid cells from chickens infected with marek's disease virus (mdv) or the herpesvirus of turkeys (hvt), from a chicken-quail hybrid infected with mdv, and from turkeys infected with the ga strain of mdv, but not on cells from turkeys infected with hvt or the hprs-16 strain of mdv or from mdv-infected japanese quails or bobwhite quails, despite the presence of lymphomas in some japanese quails. two complementary explana ... | 1984 | 18766850 |
| the developmental distribution of monoamines in the brain of male japanese quail (coturnix coturnix japonica). | changes in the levels of the brain catecholamines, norepinephrine (ne) and dopamine (da), were studied in the male japanese quail during maturation. in addition the neurotransmitter, serotonin (5ht), its precursor, tryptophan ( tryp ), and its metabolite, 5-hydroxyindoleacetic acid (5hiaa), were measured. birds were sampled at weekly intervals between the ages of 1 and 63 days of age. brains of the quail were dissected into cerebral hemispheres, diencephalon, brain stem, cerebellum, and optic lo ... | 1984 | 6203106 |
| plasma constituents and body weights of japanese quail (coturnix coturnix japonica) selected for twelve generations for plasma cholesterol responses to adrenocorticotropin. | japanese quail were selected bidirectionally over 12 generations for plasma cholesterol (pc) responses to adrenocorticotropin (acth). in addition to the selected trait, plasma corticosteroids (pcs), triglycerides (pt), and glucose (pg) were measured before and after 3 daily injections of acth. the quail were also weighed at 31 days of age. by the 12th generation of selection, when measurements were expressed as deviations from the randombred control (c) line from which the selected lines had bee ... | 1984 | 6324155 |
| protein polymorphism in two populations of the wild quail coturnix coturnix japonica. | to evaluate genetic variability in two populations of the wild quail coturnix coturnix japonica, proteins and enzymes were examined by starch gel electrophoresis. rare variants so far not observed in domestic quail were found in the following five enzymes; aspartate aminotransferase, acid phosphatase, pancreatic esterase, isocitrate dehydrogenase and lactate dehydrogenase. the proportion of polymorphic loci (p poly) and the expected average heterozygosity (h) in one of the two populations were e ... | 1984 | 6742511 |
| body weight and composition of japanese quail (coturnix coturnix japonica) at sexual maturity. | the influence of dietary protein (26%, 24%, 20%, 16%, and 14%) and restricted feeding (100%, 80%, and 60% of ad libitum) on body weight and body composition of japanese quail (coturnix coturnix japonica) at sexual maturity was examined in two similar experiments. although less variable than chronological age, body weight at sexual maturity also differed significantly. in experiment 1, there were no significant differences in breast weight, tibia length or carcass fat due to diet. in experiment 2 ... | 1984 | 6724330 |
| estradiol contributes to the postnatal demasculinization of female japanese quail (coturnix coturnix japonica). | two experiments were performed to characterize the process of postnatal demasculinization in japanese quail. in the first experiment, it was shown that estradiol (e2) can complete female demasculinization during the first 4 weeks of life. by contrast, e2 did not demasculinize sexual behavior and cloacal gland in neonatally castrated males. neonatally gonadectomized females preferentially performed mount attempts when tested in their home cage by comparison to a test arena. in experiment 2, e2 si ... | 1984 | 6489943 |
| morphology and behavior of quail neural crest cells in artificial three-dimensional extracellular matrices. | neural crest cells migrate extensively through a complex extracellular matrix (ecm) to sites of terminal differentiation. to determine what role the various components of the ecm may play in crest morphogenesis, quail (coturnix coturnix japonica) neural crest cells have been cultured in three-dimensional hydrated collagen lattices containing various combinations of macromolecules known to be present in the crest migratory pathways. neural crest cells migrate readily in native collagen gels where ... | 1984 | 6745490 |
| motion sickness in quail: body-rotation-induced conditioned fluid aversions in c. coturnix japonica. | the presence of motion sickness in japanese quail (c. coturnix japonica) was examined by using a conditioned fluid aversion as an index. twenty-three birds were divided into three groups. one group received a novel fluid (yellow-sour water) followed by 30 min of body rotation at 70 rpm (on a schedule of 15 s on and 5 s off). another group received the novel fluid followed by exposure to a sham rotation procedure. the third group experienced the rotation procedure following access to water. the g ... | 1984 | 6744814 |
| binding of progesterone with the oviduct cytosol fraction of estrogen-primed quail (coturnix coturnix japonica). | progesterone-specific binding components were detected in the cytosol fraction of enlarged oviducts from estrogen (diethylstilbestrol)-primed immature japanese quail (coturnix coturnix japonica) females by several techniques using [3h]promegestone. the oviduct as a target tissue of progesterone is the most efficient in [3h]promegestone binding, and muscle and intestine as nontarget tissues and plasma are less efficient as expected. by using [3h]promegestone for binding, the possibility of blood ... | 1984 | 6538858 |
| sexual dimorphism in the hypothalamic metabolism of testosterone in the japanese quail (coturnix coturnix japonica). | 1984 | 6396714 | |
| fine structure of muscle spindles in the woodpecker (dendrocopus major) and quail (coturnix coturnix japonica). | 1984 | 6241388 | |
| a golgi study on the neuronal morphology in the hypothalamus of the japanese quail (coturnix coturnix japonica). i. tuberal and mammillary regions. | neuronal morphology and dendritic architecture of the tuberal and mammillary regions in the hypothalamus of the quail (coturnix coturnix japonica) were investigated by means of classical neuroanatomical methods (bodian silver impregnation, luxol-fast blue, cresyl violet, toluidine blue, rapid golgi method). the tuberal region is characterized by isodendritic neurons, in particular: a) pyriform and bipolar neurons, occasionally arranged diagonally to the ventricular surface; b) csf-contacting neu ... | 1984 | 6203645 |
| iron mobilization in estrogenized male quail. | a single diethylstilbestrol (des) injection (5 mg des/100 g body wt) was administrated to several lots (three specimens each) of adult male quail (coturnix coturnix japonica). the birds were sacrificed 24, 48, 72 and 96 hr after the des injection. a significant increase in liver weight and a clear drop in the hemoglobin concentration were observed after 24 hr. later, a progressive rise was observed in plasma iron, total iron binding capacity, plasma copper and the phosphoprotein (vitellogenin), ... | 1984 | 6147235 |
| effect of the presence of females on the pituitary-testicular activity in male japanese quail (coturnix coturnix japonica). | five experiments were carried out to study the role of the presence of a female on the reproductive endocrinology of male japanese quail. in the first three experiments, exposure of an adult male raised in long days to a female for l0 min or l week failed to increase plasma testosterone and lh levels; in fact a significant transitory decrease in plasma testosterone was observed, associated with a preceding increase in plasma corticosterone. these changes are interpreted as a result of the stress ... | 1984 | 6479577 |
| effect of embryonic treatment with oestradiol benzoate on reproductive morphology, ovulation and oviposition and plasma lh concentrations in female quail (coturnix coturnix japonica). | quail eggs were injected on day 10 of incubation with 0, 5, 10, 20 or 40 micrograms oestradiol benzoate. females hatching from these eggs were reared on a 16l: 8d photoperiod and egg laying was recorded. blood samples were taken at 37, 40, 43, 46, 49, 52, 55, 58 or 61 days of age and lh concentrations were measured by a double-antibody radioimmunoassay. birds were killed at 61 days of age; ovaries and oviducts were weighed and examined. egg laying was greatly reduced by oestradiol benzoate treat ... | 1984 | 6747950 |
| effects of leu5-enkephalin on natural and angiotensin ii-induced drinking in the japanese quail (coturnix coturnix japonica). | natural drinking behavior was inhibited by intracranial (ic) injections of leu5-enkephalin (len) (30 and 60 micrograms/100 g) for 60 min, but not by iv injections (30 and 100 micrograms/100 g) in the japanese quail. drinking induced by angiotensin ii (aii) (30 and 50 micrograms/bird, ip) was also inhibited for 60 min by len (40, 60, and 100 micrograms/100 g, ic), given 5 min after the aii injections. naloxone (3 mg/bird, ip) attenuated the inhibition of len (60 micrograms/100 g, ic) and when adm ... | 1984 | 6510686 |
| melatonin rhythms in the eyes, pineal bodies, and blood of japanese quail (coturnix coturnix japonica). | melatonin levels in the eyes, pineal bodies, and blood of japanese quail exposed to 12l:12d show robust daily rhythms with high levels occurring in the night and low levels occurring during the day. since melatonin is synthesized in both the eyes and pineal bodies of birds, the relative contribution of these structures to the blood melatonin levels was determined. a rhythm of blood melatonin persisted in 12l:12d in birds blinded by complete orbital enucleation and in pinealectomized birds but th ... | 1984 | 6489741 |
| homotopic and heterotopic transplantations of quail tectal primordia in chick embryos: organization of the retinotectal projections in the chimeric embryos. | to study the adaptative capabilities of the retinotectal system in birds, the primordium of one optic tectum from 12-somite embryos of japanese quail was transplanted either homotopically , to replace the ablated same primordium, or heterotopically, to replace the ablated dorsal diencephalon in white leghorn chick embryos of the same stage. the quail nucleolar marker was used to recognize the transplants. the cytoarchitecture of the tecta and the retinal projections from the eye contralateral to ... | 1984 | 6724134 |
| the synchronisation of hatching in quail embryos: aspects of development affected by a retarding stimulus. | one hundred twenty-eight quail embryos were tested in 33 groups. in each group one egg was stimulated with sounds at a rate known to delay hatching (0.9 clicks/second). in groups of bobwhite quail, stimulation began three days or two days before hatching, and three days before hatching in groups of japanese quail. all eggs were incubated separately and respiration was monitored to indicate 1) the onset of lung ventilation, 2) the time when the egg began to click, and 3) the hatching time. in one ... | 1984 | 6736887 |
| 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 |
| 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 |
| cytoarchitecture and ultrastructure of the avian ectostriatum: afferent terminals from the dorsal telencephalon and some nuclei in the thalamus. | the cytoarchitecture, ultrastructure, and afferent terminals in the ectostriatal complex of the japanese quail were examined. the complex consists of the central core (ec) and peripheral belt (ep). terminals in the complex were categorized into three main groups according to the shape of synaptic vesicles: s (spherical), p (pleomorphic), and f (flat). s terminals are further classified into three types: ss, small terminals which have densely packed vesicles and a long active zone and are presyna ... | 1985 | 2414332 |
| hepatic biotransformation in the buzzard (buteo buteo) and the japanese quail (coturnix coturnix): effect of pcbs. | hepatic biotransformation was studied in microsomal (cytochrome p-450-dependent monooxygenase activities) and cytosolic (glutathione s-transferase activities) fractions from japanese quail (coturnix coturnix) and buzzard (buteo buteo). monooxygenase activities were not very different apart from a high 7-ethoxycoumarin de-ethylase activity in quail as compared to buzzard. glutathione s-transferase activities were higher in quail than in buzzard. dp5 (a commercial mixture of pcbs containing 50% ch ... | 1985 | 2866918 |
| 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 |
| an ultrastructural and histochemical study of the development of secondary palate in japanese quail, coturnix coturnix japonica. | embryonic development of the secondary palate of the japanese quail, coturnix coturnix japonica, was studied. the palatal shelves appeared on day 5 of incubation in a horizontal direction over the dorsal surface of the tongue. subsequently, unlike those in mammals, the opposing palatal shelves do not fuse, and a physiological cleft persists between them. in comparison with the chick, where the palatal shelves do not fuse and the medial edge epithelium (mee) becomes orthokeratinized stratified sq ... | 1985 | 2580854 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| effects of supplementary vitamin d3 on egg production of two strains of japanese quail and growth of their progeny. | two strains (university of saskatchewan, white egg and wild type) of mature japanese quail (coturnix coturnix japonica), following a 4-week depletion period, were fed one of four diets varying in supplementary vitamin d3: a) no supplementary vitamin d3, b) national research council (nrc, 1977) recommended level of 1,200 iu vitamin d3/kg feed, c) 10 times, nrc levels, and d) 100 times nrc levels for 4 weeks. egg production, egg weight, number of softshelled eggs, body weight, and feed consumption ... | 1985 | 2986086 |
| hatch weight selection: effect on post-hatch growth in the japanese quail (coturnix coturnix japonica). | the post-hatch growth of japanese quail, weight selected at hatch, was investigated. the quail were grouped according to hatch weight as follows: group i, 5.5-6.2 g; group ii, 6.3-7.0 g; and group iii, 7.1-7.6 g. group iii quail were 25 and 12% heavier at hatching than group i and ii quails, respectively, and reached a mature body weight which was 38 and 12% heavier than group i and ii quails, respectively. gompertz growth parameters were not different in any of the groups. feed and water consum ... | 1985 | 2864190 |
| peripheral blood in the japanese quail (coturnix coturnix japonica) in acute poisoning by different insecticides. | the purpose of this study was to examine the effect of chlorphenvinphos and foschlor on the erythrocytes and leucocytes in the japanese quail (coturnix coturnix japonica). it was found that there is no decided change in the number of erythrocytes after ingesting chlorphenvinphos, whereas foschlor significantly reduces rbc content. the effect of the two pesticides is shown by an increase in reticulocytes and erythroblasts. chlorphenvinphos significantly reduces, but foschlor increases, thrombocyt ... | 1985 | 2861051 |
| adrenal responses to chronic and acute water stress in japanese quail coturnix japonica. | water deprivation (wd) resulted in increased serum osmotic pressure (op) and decreased body weight (wb); adrenal aldosterone content did not change. adrenal corticosterone content tended to be elevated during early wd, indicating a stress response, but tended to decrease after seven days of wd, suggesting adrenal fatigue. during water restriction (wr), after the period of weight loss, adrenal corticosterone content and serum op were elevated. as the birds began to gain weight, aldosterone levels ... | 1985 | 2859951 |
| 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 |
| 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 |
| 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 |
| exposure of embryos to an aromatization inhibitor increases copulatory behaviour of male quail. | this experiment examined the possibility that endogenous embryonic androgen contributes to sexual differentiation of behaviour in male or female quail (coturnix coturnix japonica ), and that it does so via aromatization (conversion to oestrogen). eggs were injected on day 9 of incubation with oil or atd (an aromatization inhibitor). as adults, males and females were exposed to short days, injected with testosterone propionate, tested for male-typical behaviour, then injected with oestradiol benz ... | 1985 | 24895921 |
| 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 |
| peripheral blood changes of the japanese quail coturnix coturnix japonica following repeated small doses of trichlorfon. | 1985 | 4074943 | |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| steroidogenesis in ovarian cells of the japanese quail (coturnix coturnix japonica). | the influence of follicular maturation on steroidogenesis and steroid metabolism by isolated japanese quail granulosa and theca cells was examined. when stimulated with lh, granulosa cells of the largest follicle (f1) responded with a sixfold increase over unstimulated progesterone levels, whereas progesterone production in cells of f3 less than doubled even when maximally stimulated. forskolin stimulated progesterone synthesis in both f1 and f3 granulosa cells, but its effect was less pronounce ... | 1985 | 2416631 |
| presence of retrovirus reverse transcriptase-related gene sequences in avian cells lacking endogenous avian leukosis viruses. | using a molecularly cloned viral dna probe representing the entire avian sarcoma virus (asv) reverse transcriptase (pol) gene, we have detected related sequences in dna preparations from two avain species, ev- chickens and japanese quail, previously demonstrated to lack all endogenous avain leukosis viruses. nucleotide sequence homology was detected only when hybridization conditions, which allowed the formation of stable duplexes with as much as 30% base mismatch, were used. no sequence homolog ... | 1985 | 2410912 |
| hematological response of japanese quail to acute hemorrhagic stress. | hematological and serum biochemical changes in response to hemorrhagic stress were determined in both sexes of juvenile and adult coturnix coturnix japonica over 3 day period following a mechanical hemorrhage of 30% of the calculated total blood volume. there was an initial shift posthemorrhage towards greater numbers of more mature erythrocytes and fewer circulating reticulocytes. reticulocytosis was indicated 48-72 hr posthemorrhage. glucose and lactic acid dehydrogenase levels increased after ... | 1985 | 2864183 |
| the role of thyroid and adrenal cortical hormones in the modulation of the gonadal function in birds. | the role of the thyroid gland in modulating the gonad function depends on the functional state of the gonads. in sexually inactive (short-day's) male japanese quails, thyroidectomy and thyroxine treatment prove ineffective. thyroxine administered simultaneously with photo-gonadostimulation inhibits the maturation of the gonads: the testes decrease in weight, the metabolic clearance rate of testosterone accelerates, resulting in a decrease in the plasma level, and androsterone production increase ... | 1985 | 2938378 |
| [susceptibility of birds other than chickens to infectious laryngotracheitis]. | susceptibility to infectious laryngotracheitis virus was studied in peafowl (pavo cristatus), various species of pheasant (phasianus colchicus, lophura swinhoeii, lophophorus impejanus), guinea-fowl (numida meleagris), canaries (serinus canaria), budgerigars (melopsittacus undulatus) and japanese quail (coturnix coturnic japonica). apart from clinical observations, experiments were evaluated in terms of histopathology, immunofluorescence, serology and recovery of virus. only peafowl and pheasant ... | 1985 | 2990066 |
| s13, a rapidly oncogenic replication-defective avian retrovirus. | the avian leukemia sarcoma virus s13 transforms chicken and japanese quail embryo fibroblasts and chicken erythroid cells in tissue culture. s13-induced erythroid transformation requires culture conditions suitable for the growth of normal erythroid precursors (h. beug and m. j. hayman (1984), cell 36, 963-972). s13-transformed erythroid colonies contain a high percentage of cells that differentiate in absence of erythropoietin. s13 is defective in pol and env functions but can code for a comple ... | 1985 | 2990096 |
| production of herpesvirus of turkeys in microcarrier culturing system--a new method for production of vaccine against marek's disease. | a microcarrier (mc) culturing system for production of a vaccine against marek's disease virus is presented. cytodex-3 beads (pharmacia) and de-53 microgranular (whatman) are the recommended microcarriers. primary cells from chick embryo as well as cells from a quail cell line (qt-6, established from a japanese quail) were found to be good hosts for growth of herpesvirus of turkeys (hvt). hvt, the vaccine strain against marek's disease, was successfully grown and harvested on the above mentioned ... | 1985 | 2995176 |
| marek's disease in japanese quails (coturnix coturnix japonica): a study of natural cases. | marek's disease was observed in quails. gross lesions were confined mostly to the spleen and liver. microscopic lesions were commonly seen in spleen, proventriculus, liver, and duodenum. skin, peripheral nerves, and other visceral organs were also involved. of 123 quails examined, 39 had serum antibodies against marek's disease. these antibodies were detected from 11 to 17 weeks of age; the highest incidence was recorded at 15 weeks. feather follicular antigen detected in 30 of the 95 quails was ... | 1985 | 3000332 |
| mc29 virus-coded protein occurs as monomers and dimers in transformed cells. | the mc29 virus-coded protein p110gag-myc was found exclusively in the nucleus of transformed japanese quail (q8) cells, and time course experiments indicated that the protein had a half-life of about 30 min. when extracts of either q8 or chicken embryo cells infected with mc29 virus were prepared with nondenaturing detergents and then sedimented in sucrose gradients, p110 was found in the fractions expected to contain monomers (5.9s), dimers (9.3s), or mixtures of the two. the same extracts trea ... | 1985 | 2578574 |
| characteristics of cellular and humoral immune responses after immunization with different rabies vaccines. | three rabies vaccines were compared: 1. the fermi type vaccine, a phenol-treated suspension of brain tissue from infected sheep; 2. a virus grown in sheep brain, purified from the contaminating material to 85-90% and inactivated with beta-propiolactone; 3. and the mniip-74 strain cultured in japanese quail embryo cells and inactivated with beta-propiolactone. a single immunization of mice with any of the preparations resulted in about 50% inhibition of splenocyte migration after 2 days; by day 1 ... | 1985 | 2860797 |
| interferonogenicity of rabies vaccines as related to their therapeutic and prophylactic activities. | non-interferonogenic rabies vaccine prepared from a virus grown in sheep brain and devoid of neuroallergenic factor and an interferonogenic vaccine from the same virus strain cultured in japanese quail embryo cells have been compared. in mouse experiments both preparations appeared to have identical therapeutic and prophylactic efficacy. it seems that interferonogenicity of rabies vaccines cannot be used as a criterion of their prophylactic or therapeutic effects. the effectiveness of exogenous ... | 1985 | 2866692 |
| interspecific cell markers and cell lineage in birds. | a cell marking technique based on the structural differences existing between the interphase nucleus in two closely related species of birds, the chick and the japanese quail, is described. in all embryonic and adult cell types of the quail, a large mass of heterochromatin is associated with the nucleolus making quail and chick cells easy to identify at the single cell level after application of any dna-specific staining procedure and also at the electron microscope level. this method has been l ... | 1985 | 2869526 |
| 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 |
| 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 |
| 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 |
| 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 | |
| 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 |
| histochemical studies of ca-atpase, succinate and nad+-dependent isocitrate dehydrogenases in the shell gland of laying japanese quails: with special reference to calcium-transporting cells. | in order to elucidate the problem of which cells are involved in calcium transport and to estimate the role of mitochondria in calcium transport in the avian shell gland, the fine structure and the ca-atpase, succinate dehydrogenase (sdh) and nicotinamide adenine dinucleotide (nad+)-dependent isocitrate dehydrogenase (nad+-icdh) activity of the shell gland of egg-laying japanese quails were examined. the surface epithelial cells, consisting of ciliated cells with cilia and microvilli and non-cil ... | 1985 | 2931410 |
| 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 |
| 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 |
| hormonal correlates of gonadal regression and spontaneous recovery in japanese quail exposed to short day-lengths. | adult male japanese quail were transferred from long to short days. plasma testosterone and dihydrotestosterone quickly decreased and this endocrine response was followed by a regression of the cloacal gland, an androgen-target organ. after about a month, a spontaneous recovery of gonadal activity was observed in some but not all birds. it was not associated with obvious shifts in the circadian system. the physiological bases of this spontaneous recovery are discussed as well as the detailed rel ... | 1985 | 2412507 |
| 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 |
| 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 |
| 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 |
| 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 |
| chromosome abnormalities in embryos from lines of japanese quail divergently selected for body weight. | 1985 | 22879193 |