scholarly journals Research Note: Relationship Between Throat Feather-Color Pattern and Photodependency of Testicular Function in the Athens Randombred Control Line of Japanese Quail

1988 ◽  
Vol 67 (7) ◽  
pp. 1098-1101
Author(s):  
W.H. BURKE ◽  
T.D. SIOPES
Keyword(s):  
Japanese Quail ◽  
Color Pattern ◽  
Research Note ◽  
Control Line ◽  
Testicular Function

scholarly journals Research Note: Eggshell Quality in Japanese Quail Fed Different Fatty Acids

1992 ◽  
Vol 71 (9) ◽  
pp. 1568-1571
Author(s):  
C. VILCHEZ ◽  
S.P. TOUCHBURN ◽  
E.R. CHAVEZ ◽  
P.C. LAGUE
Keyword(s):  
Fatty Acids ◽  
Japanese Quail ◽  
Research Note ◽  
Eggshell Quality

scholarly journals Research Note: Lack of an Effect of High Levels of Menadione on Tumor Development in Japanese Quail Females

1991 ◽  
Vol 70 (11) ◽  
pp. 2382-2385 ◽  
Author(s):  
KARL E. NESTOR ◽  
DEREK A. EMMERSON ◽  
NICHOLAS B. ANTHONY ◽  
KARL E. NESTOR
Keyword(s):  
Japanese Quail ◽  
Tumor Development ◽  
Research Note

scholarly journals Impairment of testicular function in adult male Japanese quail (Coturnix japonica) after a single administration of 3-methyl-4-nitrophenol in diesel exhaust particles

2006 ◽  
Vol 189 (3) ◽  
pp. 555-564 ◽  
Author(s):  
Chun-Mei Li ◽  
Shinji Takahashi ◽  
Shinji Taneda ◽  
Chie Furuta ◽  
Gen Watanabe ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Adult Male ◽  
Diesel Exhaust ◽  
Plasma Concentrations ◽  
Reproductive Toxicity ◽  
Diesel Exhaust Particles ◽  
Testicular Atrophy ◽  
Testicular Function ◽  
Dependent Manner ◽  
Testosterone Secretion

The effects of 3-methyl-4-nitrophenol (PNMC), a component of diesel exhaust, on reproductive function were investigated in adult male Japanese quail. The quail were treated with a single i.m. dose of PNMC (78, 103 or 135 mg/kg body weight), and trunk blood and testes were collected 1, 2 or 4 weeks later. Various levels of testicular atrophy were observed in all groups treated with PNMC. Sperm formation, cloacal gland area, and plasma LH and testosterone concentrations were also reduced in birds with testicular atrophy. To determine the acute effect of PNMC on gonadotrophin from the pituitary, adult male quail were administrated a single i.m. injection of PNMC (25 mg/kg), and plasma concentrations of LH were measured at 1, 3 and 6 h. This dose significantly lowered plasma levels of LH at all three time points. These results suggest that PNMC acts on the hypothalamus–pituitary axis, by reducing circulating LH within a few hours of administration and subsequently reducing testosterone secretion. In addition, in order to investigate the direct effects of PNMC on the secretion of testosterone from testicular cells in quail testes, cultured interstitial cells containing Leydig cells were exposed to PNMC (10−6, 10−5 or 10−4 M) for 4, 8 or 24 h. These quantities of PNMC significantly reduced the secretion of testosterone in a time- and dose-dependent manner. The present findings also suggest a direct effect of PNMC on the testis to reduce testosterone secretion. This study clearly indicates that PNMC induces reproductive toxicity at both the central and testicular levels, and disrupts testicular function in adult male quail.

scholarly journals Research Note: Role of the hippocampus in spatial memory in Japanese quail

2020 ◽  
Vol 99 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Flore Lormant ◽  
Fabien Cornilleau ◽  
Paul Constantin ◽  
Maryse Meurisse ◽  
Léa Lansade ◽  
...  
Keyword(s):  
Spatial Memory ◽  
Japanese Quail ◽  
Research Note

Modelling of growth alteration in Japanese quail after a selection experiment for body weight at 4 weeks of age

2018 ◽  
Vol 156 (9) ◽  
pp. 1153-1159
Author(s):  
G. Abou Khadiga ◽  
B. Y. F. Mahmoud ◽  
E. A. El-Full
Keyword(s):  
Body Weight ◽  
Japanese Quail ◽  
Inflection Point ◽  
Mixed Model ◽  
Gompertz Model ◽  
Information Criterion ◽  
Control Line ◽  
Growth Data ◽  
Mixed Model Approach ◽  
Richards Model

AbstractThe current study investigated the influence of selection for body weight (BW) on growth curve parameters in two lines of Japanese quail through a mixed model approach. Live BWs of 1400 Japanese quail were recorded at 3-day intervals from hatching to 42 days of age. Birds were distributed equally across lines (selected and control) and sexes (male and female). The asymptotic weight parameter (β0) values were always higher in Gompertz than Richards models in both lines. The values ofβ0were higher in the selected than control lines and in females than males across models. Differences were found in the inflection point for age and weight across lines and sexes. Values of the growth rate parameter (β2) ranged from 0.06 to 0.10 in both models, favouring males over females in both lines. Lower weights at the inflection point of both models were observed in the control line. Determination coefficient (R2) of both models in different genetic groups and sexes was similar. Mean square error (MSE) values of the Gompertz model were lower for females in selectedv.control lines. In contrast, MSE values of the Richards model were lower for selected malesv.control males. According to the criteria of choice (highestR2and lowest MSE, Akaike information criterion and Bayesian information criterion), the Richards model was considered the best fitting model for the growth data of males, while the Gompertz model was the best for growth data of female quails in both lines.

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