Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| antifertility effect of gossypol in male japanese quail. | conventionally housed 130-160 g adult male japanese quail were given gossypol acetic acid (gossypol) im at 25 mg/kg in 0.5 ml of 10% etoh for 12 and 24 days (groups 1 and 2), respectively. one day after treatment was terminated they were allowed to mate with laying females individually for 20 days. fertility was 0% from mating of the group 1 birds on days 1-2 and increased to 25, 35, 55 and 65% on days 3-6 after cessation of gossypol treatment. at day 11, fertility was 80 vs 84% in controls, whe ... | 1988 | 3374259 |
| effects of dietary butylated hydroxyanisole and cysteine on toxicity of lathyrus odoratus to broiler and japanese quail chicks. | the effect of .75% dietary butylated hydroxyanisole (bha) and 1% cysteine on the toxicity of lathyrus odoratus seed to japanese quail and broiler chicks was examined. in both species, the feeding of lathyrus seed as a component of a complete diet depressed (p less than .05) body weight gain and feed intake. typical signs of lathyrism, including ruffled feathers, enlarged hocks, curled toes, ataxia, leg paralysis, and mortality, were observed. neither bha nor cysteine exerted protective effects a ... | 1988 | 3375172 |
| selection of japanese quail for contrasting blood corticosterone response to immobilization. | japanese quail (coturnix coturnix japonica) were divergently selected for 12 generations for increased (high stress, hs) and decreased (low stress, ls) blood corticosterone (b) response to unfamiliar environments. response lines were selected initially on the basis of wild-type quail b response to albino (alb) quail intrusion (s1 to s3) and subsequently on b response to immobilization (imb) (s4 to s12). using alb intruders as stressors proved unsuccessful, therefore the practice was abandoned in ... | 1988 | 3375175 |
| photostimulation of japanese quail by dim light depends upon photophase contrast, not light intensity. | three experiments were conducted to determine whether dim light is interpreted by japanese quail as subjective day or night, and whether this interpretation depends upon absolute light intensity. birds were exposed to 24-h days consisting of either bright light (2500-3000 lx) with dim light (0.5-5 lx) or dim light with darkness. locomotor activity was higher in the brighter photophase, whether it was bright light or dim light, indicating that the birds interpreted the brighter phase as daytime. ... | 1988 | 3378067 |
| effect of coccidiosis on reproductive maturation of male japanese quail. | the effects of coccidiosis on reproductive development of male japanese quail were examined. male japanese quail were exposed to high (5 x 10(5) sporulated oocysts/quail) or low (5 x 10(3) sporulated oocysts/quail) doses of eimeria uzura at 16 or 30 days of age and sampled at 37 days. quail given high doses of coccidia had reduced testes weight and lowered circulating concentrations of androgen compared with control males. low doses of coccidia did not affect testes weight but did result in elev ... | 2012 | 3382378 |
| distribution of nanomole quantities of 235u in young and adult japanese quail and in the f1 generation. comparison with 153gd. | enriched uranium, 93.16% for 235u, served as a tracer of uranium deposition in an avian species, the japanese quail. a second label, 153gd, provided for monitoring of procedures and for estimation of the 235u content of live eggs. depositions of 235u were greater than for 153gd in all tissues except the yolk sac and the liver. skeletal levels for 235u were age- and sex-dependent. feathers contained only 0.11% of the 235u tracer in contrast to 50% of the endogenous uranium. the results show that ... | 1988 | 3384676 |
| intestinal colonization of campylobacter jejuni in young japanese quails (coturnix coturnix japonica). | 1988 | 3386114 | |
| extrahypothalamic distribution of vasotocin-immunoreactive fibers and perikarya in the avian central nervous system. | immunohistochemical analysis of the extrahypothalamic distribution of vasotocin-like immunoreactive elements within the central nervous system of the domestic fowl and japanese quail, revealed several mesencephalic, pontine and bulbar target areas topographically identifiable. extrahypothalamic immunopositive perikarya were observed in diencephalic and mesencephalic locations after glutaraldehyde fixation. | 1988 | 3390126 |
| a genetic defect in hyomandibular furrow closure in the japanese quail: the causes for ear-opening abnormality and formation of an ear tuft. | the mutant et (ear tuft) quail strain is characterized by an ear-opening abnormality frequently accompanied by ear tufts. the mutant ear opening is oval shaped with a fissure on its ventral margin, whereas the ear tufts project from the ventral end of the fissure or the posterior margin of the ear opening. the ear tufts are composed of a feathered peduncle. the size of the ear tufts and the ear-opening abnormality are variable. the incidence of the ear tufts and the ear-opening abnormality in th ... | 1988 | 3392388 |
| effect of hyaluronic acid on the emergence of neural crest cells from the neural tube of the quail, coturnix coturnix japonica. | hyaluronic acid (ha) added to the medium of quail neural tubes explanted in vitro influences the number of migratory neural crest cells that emerge, compared with controls. neural crest cells were counted with an ocular grid after 20 h of migration into 0.1 mm wide areas or 'bins' lying parallel to the neural tube, and the results were analyzed by linear regression. a low concentration of ha (5 micrograms/ml) significantly decreased the total number of neural crest cells in all bins adjacent to ... | 1988 | 3396055 |
| back-drawer: a behavioral mutant in japanese quail. | the behavioral mutant "back-drawer" of japanese quail is characterized by crouching and back-drawing action with the neck bending ventrally and occasional forward rolling. the abnormal behavior appears from hatching to 8 weeks of age. back-drawers were classified into three types: (1) those showing the abnormality at hatching and dies within 5 days; (2) those showing the abnormality after 2 weeks of age and dies shortly thereafter; and (3) long survivors suffering from abnormal behavior, and sho ... | 1988 | 3396630 |
| comparison of pedigreed and nonpedigreed randombred control systems for use with artificial selection in the japanese quail. | the performance characteristics of six replicate sublines of a randombred control, three pedigreed (p) and three nonpedigreed (np), were studied to see if the np mating system could be used as a method for maintaining a randombred control for selection experiments. each subline was maintained with 32 single-pair matings, with 64 offspring placed each generation for each line. brother x sister matings were avoided in the p but not in the np system. the np chicks were pedigreed in order to determi ... | 2010 | 3405913 |
| divergent selection for growth in japanese quail under split and complete nutritional environments. 1. genetic and correlated responses to selection. | japanese quail were divergently selected for 4-wk body weight under two different nutritional environments. in one environment quail were divergently selected for high and low body weight (h and l) under a split diet (sd) with quail having the opportunity to self-select feed from high protein and high energy diets. in the other environment, quail were similarly selected (h and l) under a normal (28% protein) complete diet (cd). after 11 generations of selection, h-sd and h-cd lines were 48.9 and ... | 1988 | 3405929 |
| effects of estrone and estradiol-17 beta on 25-hydroxycholecalciferol hydroxylase activities in female japanese quail. | equimolar amounts of estrone and estradiol-17 beta injected into sexually immature female japanese quail caused comparable increases and decreases in the renal activity of 25-hydroxycholecalciferol (25hcc) 1 alpha-hydroxylase and 25-hydroxycholecalciferol 24-hydroxylase, respectively. peak activity of the former enzyme was induced by both estrogens within 6 hr and had declined by 24 hr. plasma concentrations of estrone and estradiol following the injection were maximal within 3-6 hr of injecting ... | 1988 | 3410301 |
| changes in serum concentrations of steroids during embryonic and post-hatching development of male and female japanese quail (coturnix coturnix japonica). | serum concentrations of testosterone, 5 alpha-dihydrotestosterone, oestradiol and progesterone were measured by radioimmunoassay combined with celite chromatography in male and female japanese quail (coturnix coturnix japonica) during the second half of embryonic life (days 9-17 of incubation) and during the first 5 weeks after hatching. the mean level of each of the four steroids was significantly affected by the age of the birds. an overall effect of sex was detected by analysis of variance on ... | 1988 | 3411279 |
| ultrastructure of the testis and epididymis of japanese quail (coturnix coturnix japonica) administered gossypol. | when japanese quail were given gossypol acetic acid intramuscularly at 25 mg/kg body weight per day for 9 days, testis/body weights were reduced to 63% of those of controls. lumina of the seminiferous tubules became smaller but were packed with tails of spermatids. mitochondria of spermatids changed in shape from elongated to round. after administration of gossypol for 21 days, testis/body weights were 14% of those of controls. lumina of seminiferous tubules were completely collapsed, germinal e ... | 1988 | 3413024 |
| application of the quail-chick chimera system to the study of brain development and behavior. | hatched chicks with chimeric brains containing cells from both the domestic chicken (gallus gallus domesticus) and the japanese quail (coturnix coturnix japonica) have been produced by transplantation of various regions of the neural tube at the 8- to 15- somite stage. the positions of host and donor cells relative to graft boundaries observed throughout embryonic development and after hatching implicated both radial and tangential cell movements in brain morphogenesis. in addition, transplants ... | 1988 | 3413496 |
| the dose-dependent deposition of cadmium into organs of japanese quail following oral administration. | the accumulation and disposition of cd2+ as cdcl2 administered orally to japanese quail (coturnix coturnix) was investigated. birds received 0.01, 0.10, 1.0, 50, 500, 5000, or 50,000 micrograms cd/kg/day for 4 consecutive days by gastric tube, and were killed 4 days after the final dose. the percentage of the total administered dose recovered in liver + kidneys + duodenum was 0.7% or less in all but the highest dose, for which recovery was approximately 2%. only at the highest dose did the hepat ... | 1988 | 3413792 |
| [electron microscopy study of the nucleocapsid structure of the measles virus isolated from cell cultures with primary and chronic infections]. | electron microscopic examination of isolated intracellular measles virus nucleocapsids (nc) revealed a relationship between their structure, cell system, and the type of infection. acute virus infection of vero or japanese quail embryo cells gave rise to the formation of linear nc strands with regularly and tightly stacked turns. acutely infected l-41 or hep-2 cells contained heteromorphous viral nc populations which included both typical and loosely packed nc. persistently infected l-41 and hep ... | 1988 | 3414068 |
| [acute reversible cataract due to nitrocompounds in japanese quail (coturnix coturnix japonica)]. | the present study was designed to examine the usefulness of the japanese quail as an experimental model of cataractogenic activity. chemicals, 2, 6-dibromo-4-nitro-phenol (2, 6-d), 2, 4-dinitroanisole (2, 4-da), and 2, 4-dinitrophenol (2, 4-d; for the positive control), were administered singly through an oral route to 2-week old male japanese quails to investigate the reversibility of cataracts. a single administration of 2, 4-d (36 and 43 mg/kg) produced reversible cataract in 14 of 16 animals ... | 1988 | 3416932 |
| detection of neural connection to the infundibular complex by partial or complete hypothalamic deafferentation in male quail. | to elucidate the stimulatory and inhibitory neural systems for photoperiodic control of avian reproduction, immature male japanese quail were subjected to partial or complete hypothalamic deafferentation, followed by exposure to long and short photoperiods. the results indicated that when the encephalic photosensitive area (infundibular complex, inf) was preserved after hypothalamic deafferentation, birds were able to respond to long days and their gonads eventually recrudesced, and that testicu ... | 1987 | 3428559 |
| comparative thyroid function in adult japanese quail and ring doves: influence of dietary iodine availability. | thyroid function was studied in japanese quail, coturnix japonica, and ring doves, streptopelia risoria, when both were fed the same dietary iodine (i; 930 micrograms i/kg). we also compared thyroid function in groups of doves receiving low i (less than 100 micrograms i/kg) or moderate i (930 micrograms i/kg). we measured thyroid gland (tg) weight, tg stable i content, tg 125i uptake, and 125i labeling of thyroid hormones. triiodothyronine (t3) and thyroxine (t4) concentrations in tgs and serum ... | 1987 | 3430122 |
| development of the glycogen body of the japanese quail, coturnix japonica. i. light microscopy of early development. | the glycogen body is a functionally enigmatic structure located in lumbosacral region of the spinal cord in birds. this tissue is unique to birds, and, although it is believed to be present in all species, studies on the glycogen body to date have been confined largely to the domestic chicken. the present study is the first to describe the glycogen body of the japanese quail (coturnix japonica) during incubation and at hatching. light microscopy and histochemistry were used to identify the glyco ... | 1987 | 3430633 |
| changes in embryonic development associated with long-term selection for high growth rate in japanese quail. | selection for rapid growth in the quail resulted in a changed growth pattern of the embryo and the extra-embryonic membranes (the yolk sac and allantois). the early part of the incubation period was characterized by a reduced embryo weight and a more rapid early development of the extra-embryonic membranes. these changes were followed by an increased growth rate of the embryo. the increased growth rate was apparently linked to the more rapid early development of the extra-embryonic membranes. th ... | 1987 | 3440527 |
| evaluation of interspecific hybrids of the chicken, guinea fowl, and japanese quail for innate resistance to coccidia. | experimental chicken/guinea fowl hybrids, guinea fowl, and chickens were orally inoculated with eimeria acervulina or e. tenella, which are specific for chickens, or with e. grenieri, which is specific for guinea fowl. no intact oocysts were found in feces within 24 hr of inoculation, suggesting that excystation occurred in the normal and abnormal hosts. no oocysts were found in the feces of hybrids during a 9-day postinoculation period. the guinea fowl passed oocysts of guinea fowl coccidia (e. ... | 1987 | 3442527 |
| [effectiveness of a combined live mumps-measles vaccine]. | the reactogenic and areactogenic properties of a live combined mumps-measles vaccine (mmv) prepared in primary cultures of japanese quail embryo cells from attenuated strains of mumps (l-3) and measles (l-16) viruses were under study. the observations involved 648 infants varying in ages from 1 to 3 years, seronegative to measles and mumps viruses, without the history of the disease and vaccinations against these infections or contraindications to vaccinations. the infants were vaccinated with 5 ... | 1987 | 3445589 |
| effects of oestrogen and anti-oestrogen on the cells of the endosteal surface of male japanese quail. | 1. the endosteal cellular response occurring in the early stages of medullary bone formation was histologically examined in the femurs of male japanese quail treated with oestrogen and antioestrogen. 2. the numbers of endosteal cells decreased, and preosteoblasts and osteoblasts increased, on the endosteal surface following oestrogen treatment. 3. after oestrogen and anti-oestrogen treatment the numbers of preosteoblasts and osteoblasts on the endosteal surface did not increase. however, endoste ... | 1987 | 3446339 |
| relationship between parental age, egg weight and hatching weight of japanese quail. | 1. the relationships between egg weight or age of breeder quails (coturnix coturnix japonica) and 1-d-old chick weight were determined. 2. significant correlations were found between egg weight and chick weight (r2 = 0.32) and age and chick weight (r2 = 0.86). thus, hatching weight was influenced more by the age of breeder quails than by egg weight as such. 3. chick weight was accurately predicted by the use of age as a single independent variable; egg weight did not explain any further variatio ... | 1987 | 3446342 |
| naloxone attenuates food but not water intake in japanese quail. | the effect of the opioid antagonist naloxone on food and water intake in male japanese quail (coturnix coturnix japonica) was investigated. birds were injected intramuscularly with 0, 3, 10, and 30 mg/kg body weight of naloxone hydrochloride. food and water were offered ad libitum 15 min postinjection. food intake was attenuated in a dose-dependent fashion through 300 min following the return of food and water. the dose-response relationship was quadratic, with the greatest reduction in food int ... | 1987 | 3447145 |
| relationship of serum alpha-amylase to aflatoxin resistance in japanese quail. | serum alpha-amylase (s alpha a) activities were examined in a non-selected population (ns) of japanese quail and in two lines genetically selected for resistance to aflatoxin. normal s alpha a activities of both selected lines were significantly lower than that of the ns line (p less than or equal to 0.05). an oral dose of 2.5 mg aflatoxin/kg body weight significantly lowered s alpha a activity in ns quails after 24 hours; 18.0 mg/kg body weight was required to decrease the activity in selected ... | 2008 | 3490253 |
| [hepatic and duodenal biotransformation in japanese quail (coturnix coturnix): activities of 7-ethoxycoumarin o-deethylase and coumarin 7-hydroxylase]. | in vitro cytochrome p-450-dependent monooxygenase activity was studied in hepatic and duodenal microsomes from the japanese quail (coturnix coturnix) with two substrates, 7-ethoxycoumarin and coumarin. the rate of formation of 7-hydroxycoumarin--as the main metabolic product--was followed by fluorometry. 7-ethoxycoumarin o-de-ethylase activity (7-ecod) was shown in liver and duodenum, but coumarin 7-hydroxylase (cou 7-oh) was found only in liver. the requirement for some cofactors (nadph), the i ... | 1986 | 3490823 |
| acute oral toxicity of sodium cyanide in birds. | sensitivities of six avian species, black vulture (coragyps atratus), american kestrel (falco sparverius), japanese quail (coturnix japonica), domestic chicken (gallus domesticus), eastern screech-owl (otus asio), and european starling (sturnus vulgaris), to acute poisoning by sodium cyanide (nacn) were compared by single dose ld50's. three species, domestic chickens, black vultures, and turkey vultures (cathartes aura), were dosed with nacn to determine cyanide residues in those that died and a ... | 1986 | 3503141 |
| altered endocrine and behavioral responses with reproductive aging in the male japanese quail. | experiments were conducted to further characterize the age-related decline in reproductive capability previously described in the male japanese quail. behavioral testing of a large number of males in several age groups confirmed earlier results that showed a significant reduction in courtship and mating behavior by 80 weeks of age. intact males, 78 weeks of age, that showed no reproductive behavior were given silastic implants containing testosterone. this treatment restored behavior in 80% of t ... | 1986 | 3514416 |
| isolation and characterization of three alpha-glucosidases from the japanese quail. | we have defined one type of acid alpha-glucosidase and two types of neutral alpha-glucosidases from quail skeletal muscle on the basis of differences in the elution patterns on a deae-cellulose column. the appearance of the two neutral alpha-glucosidase isoenzymes was age-dependent. a decrease in acid alpha-glucosidase activity was demonstrated in japanese quails with glycogenosis type ii. the characteristics of these three alpha-glucosidase isoenzymes are described. | 1986 | 3519597 |
| preparation of a monoclonal antibody to common amino acid sequence of lhrh and its application. | in order to prepare an antibody directed at the common amino acid sequence of mammalian, avian, and fish luteinizing hormone-releasing hormones (lhrhs), c-terminal free lhrh was conjugated with bovine thyroglobulin, and was used as the antigen. a monoclonal antibody (lrh13) was obtained as an ascitic fluid by fusing the spleen cells of a balb/c donor mouse immunized with the antigen to x63.ag8.653 mouse myeloma cells followed by limiting dilution cloning and transplanting a positive clone to bal ... | 1986 | 3530729 |
| immunohistochemical study of the distribution of vasotocin reacting neurons in avian diencephalon. | vasotocin (vt)- and neurophysin (nph)-containing neurons were immunocytochemically demonstrated in the diencephalon of the japanese quail (coturnix coturnix japonica), domestic fowl (gallus gallus), and pekin duck (anas platyrhynchos). in these three avian species, the immunoreactive cells are similarly distributed into three different diencephalic regions: lateral (l), periventricular (p), and dorsal diencephalic (dd). a different number of cell clusters can be easily identified in each region ... | 1986 | 3540108 |
| calcium-dependent chronotropic action of bovine parathyroid hormone (1-34) in isolated atria of japanese quail, coturnix coturnix japonica. | the involvement of extracellular calcium in the chronotropic action of parathyroid hormone (pth) in isolated quail atria was studied. bovine (b) pth-(1-34) caused dose-dependent increases in the atrial beating rate. the pth-induced positive chronotropism was significantly attenuated by lowering the extracellular calcium concentration or by using the calcium channel antagonists verapamil and d600. this suggests the importance of calcium influx in the cardiac action of pth. beta-adrenergic blockad ... | 1986 | 3557092 |
| [adaptation of strains of the rabies virus flury lep and hep to primary culture of fibroblasts of the embryo of japanese quail (coturnix coturnix japonica)]. | 1986 | 3561096 | |
| iron content and distribution in japanese quail. | determination of blood haematocrit and haemoglobin, plasma iron content, total iron binding capacity and phosphoprotein (vitellogenin), and the iron content of different organs (pectoral muscle, liver, spleen, intestine, femur bone marrow, blood, gonad and eggs, and feathers) were carried out in prelaying, onset of laying and full laying females, as well as in adult males. the whole iron content was also determined on incinerated specimens giving these results: 53.7 parts per million (p.p.m.) ir ... | 1987 | 3562776 |
| activation of the isthmo-optic neurons by the visual wulst stimulation. | the visual wulst (vw) in the avian telencephalon is thought to be an avian equivalent of the mammalian striate cortex. effects of electrical stimulation of vw were studied in the isthmo-optic nucleus (ion) of the japanese quail by extracellular recording. most ion neurons examined were activated by vw stimulation, and their response latencies ranged from 12 to 27 ms (mean +/- s.d. = 17 +/- 4 ms, n = 67). thus, this study suggested that the avian 'visual cortex' could modulate some retinal functi ... | 2012 | 3567630 |
| developmental changes induced by glucocorticoids treatment in breeder quail (coturnix coturnix japonica). | the effects produced in offspring by corticosterone treatment to breeder quail were investigated. the breeders received corticosterone orally every day during 7 days. the total dose administered was 3.15 mg/quail/7 days. the quail from treated breeders have a decreased rate of body growth during the experimental period. the studied metabolic and nutritives parameters were smaller than the control group, however, the relative indices were similar. the breeders treated with corticosterone produce ... | 1987 | 3570144 |
| reproduction of japanese quail after microwave irradiation (2.45 ghz cw) during embryogeny. | japanese quail (coturnix coturnix japonica) embryos were irradiated continuously in ovo with 2.45-ghz continuous wave radiation during the first 12 days of embryogenesis at an incident power of 5 mw/cm2 and a specific absorption rate of 4.03 mw/g. the internal temperature of irradiated and nonirradiated (sham) eggs was 37.5 +/- 0.3 degrees c, which is the optimum temperature for incubating quail eggs. at 35 days after hatching irradiated and sham-irradiated males were paired with irradiated or s ... | 1987 | 3580002 |
| egg production in four generations of paired japanese quail. | four generations of japanese quail were hatched in succession starting with the progeny of an athens randombred quail colony. in each generation quail were maintained in cages as male-female pairs. the photoperiod was 16 hr of light per day with feed and water available ad libitum. from 6 to 20 weeks of age mortality, egg production, fertility, hatchability, and progeny livability were improved over previously published reports of reproduction in colony cages. mortality decreased while age at 50 ... | 1987 | 3588489 |
| effect of vitamin e and synthetic antioxidants on the survival rate of mercury-poisoned japanese quail. | the effect of vitamin e and the synthetic antioxidants, 6-ethyoxy,1,2-dihydro 2,2,4-trimethylquinoline (ethoxyquin), 2,6 bis(1,1 dimethyethyl)-4-methylphenol (bht), n,n-diphenyl-p-phenylene diamine (dppd), bis-(diethyl thiocarbamoyl) disulfide (antabuse), and 2 tertiary-butyl-4-methoxyphenol (bha) on organic mercury-induced mortality was investigated in japanese quail. when the synthetic antioxidants, ethoxyquin, bht, and antabuse were fed at 1% of the diet, they induced mortality. ethoxyquin wa ... | 1987 | 3588500 |
| ultrastructural study of ochratoxicosis in quail (coturnix coturnix japonica). | ultrathin sections of liver and kidney from 11-week-old quail fed, from day-old, ochratoxin a (oa) (mixed in the diet at levels of 4 and 8 ppm) were examined in the electron microscope. pathological changes in the kidneys were limited to the proximal convoluted tubules (pct) and glomeruli. in the pcts, abnormal mitochondria and excessive numbers of lipid droplets were the principal findings with glomeruli showing thickened basement membranes. swollen mitochondria and variable glycogen deposition ... | 1987 | 3589170 |
| skin surface topography in the domestic fowl and japanese quail. | 1986 | 3594177 | |
| japanese quail as a model for the study of hexachlorobenzene-induced porphyria. | 1986 | 3596744 | |
| divergent selection for body weight and yolk precursor in coturnix coturnix japonica. 7. influence of genetic changes in body weight and yolk precursor on egg production. | japanese quail lines were started from a randombred control by selecting for high (hw) or low (lw) 4-week body weight and high (hp) or low (lp) total plasma phosphorus (p), a measure of yolk precursor. in the 9th generation, 2 sublines were initiated from line hw based on high (hw-hp) or low (hw-lp) level of p in females while males were continually selected for hw. a subline (lp-hw) was started from line lp in the 9th generation by selecting the males for hw while continuing to select the femal ... | 2013 | 3601848 |
| animal models utilized in research on muscular diseases in japan. | a comparative study of human and animal muscular dystrophies revealed a number of differences in clinical symptoms and muscle pathology. in chicken muscular dystrophy (line 413), the white muscle was preferentially involved with striking vacuole formation in the sarcoplasm. despite massive muscle fiber necrosis with phagocytosis which occurred in large groups in both hamsters (bio 14.6) and mdx mouse dystrophies, the regenerating process compensated for the muscle fiber degeneration and resulted ... | 1987 | 3601989 |
| the metabolism of 14c-ddt, 14c-ddd, 14c-dde and 14c-ddmu in rats and japanese quail. | the metabolism and excretion of 14c-ddt, 14c-ddd, 14c-dde and 14c-ddmu were compared in male rats and male japanese quail after i.p. injection. the rate of excretion of radioactivity was greater in the rat than in the quail for all compounds except ddmu. skin and fat were major sites of residual radioactivity in both species, the compound administered and dde accounting for most of the radioactivity except in the case of ddmu. the four radiolabelled compounds were all present in significant quan ... | 1987 | 3604258 |
| photoperiodic and endocrine control of social proximity behavior in male japanese quail (coturnix coturnix japonica). | previous research had shown that reproductively mature male japanese quail maintained on a 16:08 light/dark (16l:8d) photoperiod spend about 75% of their time throughout daylight hours near a window that provides visual access to a female conspecific. in contrast, females do not display a corresponding tendency to remain near male conspecifics. in experiment 1, i demonstrated that the social proximity behavior of male japanese quail declines significantly when photostimulation is restricted to 2 ... | 1987 | 3606811 |
| a comparison of aromatase, 5 alpha-, and 5 beta- reductase activities in the brain and pituitary of male and female quail (c. c. japonica). | in numerous vertebrate species including japanese quail (coturnix coturnix japonica), actions of testosterone (t) on neuroendocrine target tissues are mediated in part by conversion to estrogenic and androgenic metabolites. in order to assess which pathways were favored in each identified androgen target area in quail brain and whether there were discernible sex differences, we developed an assay for simultaneously quantifying aromatase, 5 alpha-, and 5 beta-reductase. in addition, we made the f ... | 1987 | 3612047 |
| sexual differentiation and hormonal control of the sexually dimorphic medial preoptic nucleus in the quail. | we recently identified a sexually dimorphic nucleus in the preoptic region of the japanese quail, the medial preoptic nucleus (pom), which is significantly larger in males than in females. in the present study, we investigated the hormonal control of this morphological neuroanatomical difference and the possible relationships between the sexual dimorphism in pom volume and in copulatory behavior. treatments which are known to affect sexual behavior were thus applied to different groups of birds ... | 1987 | 3620956 |
| evidence for a daily rhythmicity in the acute release of luteinizing hormone in response to electrical stimulation in the japanese quail. | this study was undertaken to examine the effect of electrical stimulation of the hypothalamus at different times of day on luteinizing hormone (lh) secretion in male castrated quail on short days (8l:16d). the posterior hypothalamus was stimulated with square-wave pulses of 80 microa for 2 min through chronically-implanted platinum microelectrodes. stimulation was carried out on each quail at 4 (treatment a), 10 (b), or 14 h (c) after dawn. plasma lh levels were increased markedly within 2 min o ... | 2013 | 3625579 |
| japanese quail can learn phonetic categories. | japanese quail (coturnix coturnix) learned a category for syllable-initial [d] followed by a dozen different vowels. after learning to categorize syllables consisting of [d], [b], or [g] followed by four different vowels, quail correctly categorized syllables in which the same consonants preceded eight novel vowels. acoustic analysis of the categorized syllables revealed no single feature or pattern of features that could support generalization, suggesting that the quail adopted a more complex m ... | 1987 | 3629235 |
| improvements in the determination of the turnover rate of plasma thyroxine in avian species: application to the japanese quail. | the disappearance of the thyroid hormone thyroxine (t4) from plasma in fully grown male japanese quail can be described as a first order process with a rate constant of 0.178 +/- 0.013/h (mean +/- s.e.m., n = 8), which represents a half-life of 3.90 h. a small amount of [125i]t4 in relation to total circulating t4 was injected i.v. into japanese quail and plasma samples were taken at appropriate time-intervals for the determination of residual plasma radioactivity. the rate of disappearance of [ ... | 1987 | 3655608 |
| transformation of a polygonal cellular pattern during sexual maturation of the avian oviduct epithelium: computer simulation. | a peculiar cellular pattern resembling a checkerboard has been observed on the luminal surface of the oviduct epithelium of an adult japanese quail. the epithelium is a monolayer cell sheet and consists of two types of columnar cells, ciliated cells (c-cells) and gland cells (g-cells) assembled in alternating blocks. the pattern develops, during sexual maturation, from a kagome-like pattern (in which large c-cells are surrounded by small g-cells) characteristic of the immature oviduct. in the pr ... | 1986 | 3655641 |
| influence of 12 hours of sound stimuli on gonad development and plasma luteinizing hormone in japanese quail (coturnix coturnix japonica) exposed to 6 hours of daily light. | two experiments were conducted to determine the effects of sound stimulation on gonadal growth in male and female japanese quail (coturnix coturnix japonica) maintained under a photoperiod of 6 hr light and 18 hr dark (6l:18d) from 1 to 12 weeks of age (experiment 1) or 1 to 14 weeks of age (experiment 2). the quail were split into three sound environments as follows: 1) 12 hr of radio music (rs) beginning 1 hr before lights off; 2) 12 hr of vocalization from a breeding colony of quail (qv) begi ... | 1987 | 3658881 |
| a method to quantify aggressiveness in japanese quail (coturnix c. japonica). | testing procedures which rely on paired fights are unsuitable for measuring individual aggressiveness because the outcome of initial encounters influences subsequent dominance status. in an effort to circumvent this problem, we developed a test system which quantifies aggressiveness in individual japanese quail by measuring locomotor and pecking activity of test birds presented with the visual stimulus of a conspecific. using this procedure, we demonstrate that aggression is specific to sexually ... | 1987 | 3659151 |
| immunohistochemical localization of laminin, neural cell adhesion molecule, collagen type iv and t-61 antigen in the embryonic retina of the japanese quail by in vivo injection of antibodies. | antibodies against laminin (ln), fibronectin (fn), collagen type iv (col iv), neural cell adhesion molecule (n-cam), t-61 antigen, actin, tubulin and neurofilament protein were injected into the eyes of quail embryos (coturnix coturnix japonica) of different ages. twenty h after injection, the heads of the embryos were fixed and the antibodies visualized in sections with the use of fluorescein-isothiocyanate (fitc) or peroxidase-labeled second antibodies by light- and electron microscopy. antibo ... | 1987 | 3664600 |
| hormonal control of female sexual behavior in the japanese quail. | four experiments were carried out to study the hormonal control of female receptivity and proceptivity in japanese quail. both aspects of reproductive behavior can be activated in a dose-dependent manner by injections of estradiol benzoate (eb). progesterone (p) given in addition to suboptimal doses of eb has little additional stimulatory effect. other aspects of the reproductive physiology such as enlargement of the cloacal diameter and growth of the oviduct also seem to be controlled primarily ... | 2013 | 3666684 |
| response of growth-selected japanese quail lines to tannin levels in grain sorghum diets with suboptimal protein. | growth of selected lines of japanese quail fed grain sorghum diets was evaluated. suboptimal protein levels (23 and 25%) were used in conjunction with two varieties of sorghum differing in tannin content (.02 vs. 6.06%). chicks of three related lines of quail differing in growth rates and mature body sizes were fed the diets from 0 to 28 days of age. growth was significantly reduced (14 and 6%) by substitution of high tannin sorghum for low tannin sorghum in the 23 and 25% protein diets, respect ... | 1987 | 3671284 |
| secretion of egg white proteins in primary cultured oviduct cells of laying japanese quail (coturnix coturnix japonica). | oviduct (magnum) cells of laying japanese quails (coturnix coturnix japonica) were isolated after digestion of the magnum portion by collagenase and dispase and cultured in dulbecco's modified eagle medium (dme) supplemented with 10% fetal calf serum. the cultured cells formed a monolayer. immunoperoxidase staining with antiovalbumin and anticonalbumin antibodies elucidated that more than 90% of the total population of the cells contained ovalbumin and conalbumin within the cytoplasm. the result ... | 1987 | 3671295 |
| lipocyte hyperplasia and sexual maturation of japanese quail (coturnix coturnix japonica). | 1. hyperplastic growth of adipose tissue in japanese quail (coturnix coturnix japonica) was examined in relation to sexual maturity to determine whether fat cell number is fixed in mature individuals of this species. 2. total dna concentrations in the lipid (lipocyte) and non-lipid (stroma) fractions of collagenase (ec 3.4.24.3)-digested abdominal (retroperitoneal) fat depots were determined on a chronological-age basis from 28 to 240 d of age. the in vivo incorporation of [methyl-3h]thymidine i ... | 1986 | 3676180 |
| time course of degeneration of the visual system induced by spontaneous glaucoma in the albino quail (coturnix coturnix japonica). | the retinal projection of an imperfect albino quail mutant with a sex-linked recessive gene was examined 2 weeks-16 months post-hatch using various histological methods. during the first weeks the visual system was normal. initial signs of buphthalmos, a form of spontaneous glaucoma, appeared between the 3d and 5th months. its development induced a degeneration of the retinal projections according to a relatively precise sequence progressing from the mesencephalic tegmentum to the optic tectum, ... | 1987 | 3676739 |
| neuroanatomical distribution of testosterone-metabolizing enzymes in the japanese quail. | we describe a very sensitive and precise assay which allows one to study the metabolism of testosterone (t) in small brain nuclei dissected out according to the method of palkovits and brownstein. with this method, the neuroanatomical distributions of aromatase, and 5 alpha- and 5 beta-reductase activities were studied in adult male quail (coturnix coturnix japonica). the different enzymes show different neuroanatomical distributions. production of estradiol-17 beta (e2) was highest in the sexua ... | 1987 | 3676776 |
| estimates of heritability for plasma very low density lipoprotein concentration and genetic correlations with lipid content, body volume, and density in coturnix coturnix japonica. | genetic parameters associated with very low density lipoprotein concentration (vldl) in a randombred population of coturnix were estimated. associated traits were: body density, volume, and weight of the live bird, and lipid content of the whole carcass. a total of 739 progeny by 50 sires and 126 dams was the basis of the data. the vldl was highly heritable (.52) and highly correlated with lipid content (greater than .50) but correlated to lesser degrees with body density (.24) and body volume ( ... | 1987 | 3684849 |
| circulating levels of luteinizing hormone and androgen in mature male japanese quail over 24 hours. | male japanese quail on a 16 light:8 dark photoperiod (on at 0600 h) were sampled over 24 h to determine peripheral levels of the luteinizing hormone and testosterone. six males were sampled (each animal sampled once) at each of 10 sampling periods that began at 0800 h and ended the next morning at 0800 h. serum testosterone concentrations were greatest at 2000 h and decreased across the night (2200 to 0600 h) to reach a nadir at 0500 h; levels increased in the morning but fell again at 1700 h. l ... | 1987 | 3684863 |
| growth hormone status and growth characteristics of japanese quail divergently selected for four-week body weights. | a randombred line of quail (r1) and two lines selected for either increased (hw) or decreased (lw) 4-wk body weight were used to examine the relationship of growth to circulating growth hormone (gh) levels during growth. differences in gh between males and females were not detected. growth hormone was low at hatching in all lines but then increased to relatively high levels by the first post-hatching sample (3 to 7 days). a decline in gh then occurred in all lines, with low adult levels detected ... | 1987 | 3684882 |
| effects of long term consumption of fish oil (maxepa) on serum lipids and arterial ultrastructure in japanese quail (coturnix coturnix japonica). | both random (u.c. davis) and inbred ("sea") japanese quail were fed 8.6% dietary supplements of lard (sf) or fish oil (fo) maxepa (38% of calories from fat) and 9 months later selected blood vessels were subjected to light and electron microscopy. serum lipids were measured by means of automatic enzymatic analyses (beckman astra and dupont aca) following fasting (12-14 h) bleeding times taken at autopsy. vldl and ldl were determined indirectly. fatty acid profiles were done on pericardial fat fr ... | 1987 | 3689486 |
| central and peripheral metabolism of 5 alpha-dihydrotestosterone in the male japanese quail: biochemical characterization and relationship with reproductive behavior. | an in vitro radioenzymatic assay and purification procedure by thin-layer chromatography were used to study the metabolism of dihydrotestosterone (dht) into 3 alpha- and 3 beta-androstanediols by the brain and cloacal gland of japanese quail. kinetic studies showed that these 2 metabolites are produced in a linear fashion with respect to time of incubation for up to 15 min but that they continue to accumulate for up to 4 h. the maximum velocity of these reactions is high (nmol/mg protein/15 min) ... | 1987 | 3690260 |
| effect of photoperiod and melatonin on cold resistance, thermoregulation and shivering/nonshivering thermogenesis in japanese quail. | the effect of photoperiod and melatonin treatment on cold resistance and thermogenesis of quails was studied. the birds were acclimated for 8 weeks to short day (8l:16d) or long day (16l:8d) conditions, and 8 of 16 quails in each group were implanted with melatonin capsules. one group of quails was maintained outside in an aviary during winter. oxygen consumption (vo2), body temperature (tb, recorded with temperature transmitters) and shivering (integrated pectoral emg) were recorded continuousl ... | 1987 | 3693622 |
| hemiagenesis of the thyroid gland in the quail (coturnix coturnix japonica). | hemiagenesis of the thyroid occurred in a closed population of japanese quails. the unilateral gland was histologically normal, occurred most frequently in females, was heavier than individual pairs of glands and the birds showed no clinical effects. comparative aspects are discussed. | 1986 | 3700735 |
| effect of flutamide (an antiandrogen) and diethylstilbestrol on the reproductive behavior of japanese quail. | three experiments were conducted in order to investigate the role of brain androgen and estrogen receptors in sex hormone activated male reproductive behavior in japanese quail. in experiment 1, castrated male quail were injected with oil, testosterone propionate (tp), flutamide (flut), an androgen antagonist, or tp+flut. males given tp+flut, compared with birds receiving tp alone, strutted much less and had smaller proctodeal (foam) glands. copulation was reduced by flut only on the last test d ... | 1986 | 3703970 |
| carcase characteristics of japanese quail at 42 days of age. | an experiment was carried out with japanese quail to study the effect of sex on carcase characteristics. the carcase yield was significantly greater in males than females, although the carcase weight was similar. the breast and legs constituted a major proportion of body weight, being 34.6 and 32.1% for males and females respectively, but their yields were not influenced by sex. the proportionate yield of liver and alimentary tract was greater in females than in males. both part weight and part ... | 1986 | 3708402 |
| cadmium in tissues of japanese quail fed oat grain grown on municipal sludge-amended soil. | oats were cultured on soil amended with municipal sewage sludge from syracuse, n.y., or on soil alone (control). the oats were fed to male and female japanese quail through four generations. the extent of absorption of cadmium by the oats and its deposition in tissues and eggs of the first and fourth generations of birds were determined. the tissue levels of cadmium found in the first (f0) generation were kidney greater than liver greater than muscle approximately equal to eggs, with the quail f ... | 2013 | 3712493 |
| infectious sinusitis in coturnix quails in brazil. | in brazil, mycoplasmas were isolated from the sinuses of japanese quails (coturnix coturnix japonica) from two commercial flocks affected with sinusitis. the major respiratory signs and gross lesions are described. based on serological and biochemical results, the mycoplasmas isolated were identified as mycoplasma gallisepticum. one of the isolates was pathogenic for chickens. | 1986 | 3729866 |
| sertoli cell tumors in japanese quail. | testicles were collected from 33 male japanese quails older than 3 years. three of these quails (9.1%) had one or two large neoplastic testicles. these testicles were 2-5 times normal size, round, and firm, with cystic spaces of various sizes. microscopically, there was marked intratubular sertoli cell proliferation and various-sized cystic spaces filled with an eosinophilic vacuolated fluid. microscopic changes in all neoplastic testicles were diagnostic for sertoli cell tumors. | 2003 | 3729877 |
| distribution and morphology of retinal ganglion cells in the japanese quail. | a ganglion cell density map was produced from the nissl-stained retinal whole mount of the japanese quail. ganglion cell density diminished nearly concentrically from the central area toward the retinal periphery. the mean soma area of ganglion cells in isodensity zones increased as the cell density decreased. the histograms of soma areas in each zone indicated that a population of small-sized ganglion cells persists into the peripheral retina. the total number of ganglion cells was estimated at ... | 1986 | 3730839 |
| effect of administration of sex hormones on immunoglobulin level in immature japanese quail hens. | 2006 | 3732176 | |
| acute aflatoxicosis in genetically resistant and nonselected japanese quail. | aflatoxin b1 (afb1) was administered by either oral intubation or intravenous (iv) injection to two lines of japanese quail selected for aflatoxin resistance (ar2.5 and ar3) and a nonselected control line (ns). pretreatment feed consumption did not vary significantly between lines; however, normal water intake of ar quail was 25% greater than that of ns quail. oral afb1 dosing (1.0 mg/kg body wt) elicited 53 and 25% decreases in feed and water consumption of ns quail within 24 hr. the only postd ... | 1986 | 3737523 |
| increased deposition of uranium in the bones of vitellogenic male japanese quail. effect of estradiol-17 beta on the distribution of uranium (vi), thorium (iv), gadolinium (iii), and calcium (ii). | japanese quail were given, intramuscularly, either 16-mumol estradiol-17 beta (e2) in .25-ml ethanol solution/100 g body weight or .25 ml ethanol/100 g. four days later, these quail were given, intravenously, 1.5-mumol uo2(no3)2, th(no3)4, gdcl3 (153gd-labeled) or cacl2 (47ca-labeled)/.15 ml .03 n hcl solution/100 g. the distribution of uranium among selected tissues was markedly different than for thorium or gadolinium and was approximately the same as for calcium. for example, 18 hr after givi ... | 1986 | 3737527 |
| the structure of sugar chains of japanese quail ovomucoid. the occurrence of oligosaccharides not expected from the classical biosynthetic pathway for n-glycans; a method for the assessment of the structure of glycans present in picomolar amounts. | while the structure of the major oligosaccharide of japanese quail ovomucoid was reported earlier (hase, s. et al. (1982) j. biochem. 91, 735-737), the structures of the minor oligosaccharide units were investigated for the first time in the present studies. for this purpose, the glycans of the protein were liberated from the polypeptide chain by hydrazinolysis. after n-acetylation, the reducing ends of the oligosaccharides obtained were coupled with 2-aminopyridine, and then the resulting fluor ... | 1986 | 3745144 |
| comparison of monoamine concentrations in the brains of adult male and female japanese quail. | a fluorometric assay measuring brain tissue concentrations of norepinephrine, dopamine, and serotonin has been validated for japanese quail. accuracy, precision, specificity, and parallelism were determined. the sensitivity of the assays was 6 ng/tube, which allowed individual assay of 1 to 2 mg hypothalamic tissue. in experiment 1, relatively large areas of brain from adult, reproductively active males and females were found to differ significantly in norepinephrine content in optic lobes and f ... | 1986 | 3748952 |
| distribution and daily fluctuation of the available glucocorticoid binding sites in different areas of the quail brain. | the distribution and daily fluctuation of available glucocorticoid binding sites was studied in the brain of the quail coturnix coturnix japonica, under physiological circumstances. a high level of triamcinolone acetonide binding was observed in some limbic structures (hippocampus and archistriatum), in the nucleus medialis and lateralis posterioris hypothalami and in the cerebellar cortex. the daily fluctuation of the available glucocorticoid binding sites in the preoptic area, hippocampus, arc ... | 2013 | 3751612 |
| biological activity of fluorine-substituted 1,25-dihydroxyvitamin d3 in rats, in chicken and in japanese quails. | the biological activity of two fluorinated analogs of 1,25(oh)2d3 was compared with 1,25(oh)2d3 in various vitamin d assays. the effect of 24,24-f2-1,25(oh)2d3 on plasma calcium, bone weight and duodenal calcium binding protein in chicken, on calcium excretion via egg shell in japanese quails and on mobilization of calcium from the bone in rats was twice as high as the effect of the most potent naturally occurring vitamin d3 metabolite 1,25(oh)2d3. in contrast, 24r-f-1,25(oh)2d3 has less than 50 ... | 1986 | 3754105 |
| determinants of social proximity in japanese quail (coturnix coturnix japonica): male behavior. | following opportunity to copulate with a female housed in an adjacent compartment, male japanese quail spent 64% of their time near a window that provided visual access to the female (experiment 1). this social proximity behavior persisted for at least 2 weeks of continual exposure to the window despite lack of further physical access to the female (experiment 2) and was evident at all daylight hours (experiment 3). female japanese quail stimulated more proximity behavior in male conspecifics th ... | 1986 | 3754503 |
| the relationship of muscle electrical activity, tremor and heat production to shivering thermogenesis in japanese quail. | we measured the electrical activity and the tremor of the pectoral muscle and total body heat production in control and cold-acclimated japanese quail at +26 degrees c, +12 degrees c and +2 degrees c before and after 3 weeks of acclimation, using electromyography, accelerometer recordings, and indirect calorimetry. japanese quail shiver in 0.2- to 3-s bursts that occur in groups. an increase in both the frequency and the duration of bursts and burst groups contributes to the increase in heat pro ... | 1986 | 3760768 |
| mycosis of commercial japanese quail, ducks and turkeys. | 1986 | 3767802 | |
| urates and allantoic regulation in embryonic japanese quail, coturnix coturnix japonica. | during embryonic development, allantoic fluid represents the shifting balance between renal excretion and reabsorption by chorioallantoic membranes. allantoic contents of na+, k+, cl-, urate, ph, and water were followed over days 10-15 of the 16 day incubation. water volume remained near 0.9 ml until day 13, then declined very rapidly. the ph declined more steadily, from 8 to 5.5. contents of na+ and cl- fell regularly to final values 80-88% below day 10. the k+ content changed differently and n ... | 1986 | 3772331 |
| the relationship of certain blood parameters to aflatoxin resistance in japanese quail. | blood chemistry profiles were obtained for two lines of japanese quail selected for resistance to aflatoxin, and for a nonselected control line. nine of the 18 plasma components measured in samples taken at 4 weeks of age changed as a result of selection. plasma concentrations of total protein, albumin, cholesterol, and potassium, and the activities of lactic dehydrogenase, glutamic-oxalacetic transaminase, and cholinesterase were significantly elevated in aflatoxin-resistant quail compared with ... | 1986 | 3774734 |
| ultrastructural changes in the uropygial gland of the male japanese quail, coturnix coturnix, after testosterone treatment. comparison with the sebaceous gland of the male rat. | the ultrastructure of the uropygial gland of the male quail was compared to that of the sebaceous gland of the male rat after castration and testosterone treatment of both species. in intact animals, the differentiating cells of these glands displayed almost the same pattern as regards their smooth endoplasmic reticulum, an organelle involved in lipogenesis in both cases. castration reduced the volume of this organelle, while testosterone administration restored cell morphology to a normal or su ... | 1986 | 3779815 |
| the proliferation and differentiation of the bone-lining cell in estrogen-induced osteogenesis. | the purpose of this study was to determine the capacity of the bone-lining cell, which covers most nonremodeling bone surfaces in the adult skeleton, to proliferate and contribute to the rapid endosteal osteogenic response following estrogen treatment in male japanese quail. in control, untreated birds bone-lining cells cover most of the femoral endosteal surface. bone-lining cells are thinly extended along bone surfaces, have flat nuclei, and account for about 77% of the cells adjacent to the b ... | 1986 | 3790374 |
| an improved method for the separation of molecular species of cerebrosides. | a method employing reversed-phase high performance liquid chromatography (hplc) has been developed for the analysis of molecular species of underivatized cerebrosides. by using a high carbon (20%) c18-silica bead column, monohexosylceramides isolated from bovine brain and japanese quail intestine could each be separated into 42 and 56 peaks, respectively, and could subsequently be recovered. under our analytical conditions, underivatized cerebrosides with 24:1 and 22:0 fatty acids were completel ... | 1986 | 3796235 |
| sexual pavlovian conditioned approach behavior in male japanese quail (coturnix coturnix japonica). | a localized visual stimulus presented immediately prior to access to a female conspecific stimulated approach behavior in male japanese quail after several conditioning trials. development of this conditioned approach behavior was observed with two different types of signal lights, 10-s and 30-s signal durations, large and small experimental chambers, and with male birds housed continually in the conditioning chambers or only placed in the chamber for brief daily sessions. conditioning also resu ... | 1986 | 3802785 |
| does behavior contingent stimulus movement enhance filial imprinting in japanese quail? | japanese quail chicks were exposed for 2.5 hrs to either a white or a normal stuffed adult conspecific (= model). during this period the model was either nonmoving or it moved for short periods. this movement could be contingent or noncontingent upon distress calls of the chicks. in each condition, exposure led to a significant preference for the familiar model over the nonfamiliar one during a 10-min choice test. chicks exposed to a nonmoving model had the weakest preference for the familiar mo ... | 1986 | 3803728 |
| effects of photoperiods on the weights of bursa of fabricius and thymus in japanese quail. | effects of photoperiods on the growth of the bursa of fabricius and the thymus were investigated in male (1-8 weeks after hatching) and female (5-7 weeks after hatching) japanese quail. in males from hatching to 4 weeks of age, the bursal growth was not affected by photoperiod. however, the growth pattern was different between long and short days after 4 weeks of age, i.e., the bursal weight under long days (ld 16:8) increased rapidly until 6 weeks of age and regressed thereafter, whereas it con ... | 1986 | 3803990 |
| oral and intramuscular toxicity of inorganic and organic mercury chloride to growing quail. | the lethal toxicity of inorganic (hgcl2) and organic (ch3hgcl) mercury chloride was compared for coturnix (japanese quail, coturnix japonica) of different ages from hatch through adulthood by single-dose acute oral and intramuscular injections and by a 5-d dietary trial. sublethal mercury toxicity was studied by evaluation of plasma and brain cholinesterase activity. ch3hgcl was more toxic than hgcl2 in all tests at each age tested. ld50s consistently increased over the first 4 wk for both acute ... | 1987 | 3806696 |
| a heat-stable toxin isolated from the turkey coryza agent, bordetella avium. | a toxin was isolated from bordetella avium grown in a defined medium. the toxin was active for mice but not for turkey poults or japanese quail. the extraction procedure is described. the toxin was trypsin-sensitive and heat-stable (85 c for 30 min), and its activity was blocked by b. avium hyperimmune serum. | 1986 | 3814013 |
| a study of marek's disease in japanese quails vaccinated with herpesvirus of turkeys. | in a study of outbreaks of marek's disease in quails, 220 adult quails vaccinated with herpesvirus of turkeys (hvt) were examined pathologically and serologically for marek's disease (md). forty-three of the 220 quails exhibited microscopic lesions similar to those of chickens with md. md-virus-specific antigen was found in feather tips of 44 of the 220 birds, and the hvt-specific antibody was found in sera of 56 of the 220 birds by agar gel precipitation. there was a positive correlation betwee ... | 1986 | 3814019 |