Relative potencies of testosterone and 5α-dihydrotestosterone on crowing and cloacal gland growth in the Japanese quail (Coturnix coturnix japonica)

1984 ◽  
Vol 100 (1) ◽  
pp. 19-23 ◽  
Author(s):  
J. Balthazart ◽  
M. Schumacher ◽  
G. Malacarne

ABSTRACT It has been suggested that testosterone is less effective at inducing crowing behaviour in young birds than in adults because of the presence of higher levels of steroid 5β-reductase in the young brain, which converts testosterone to inactive 5β-reduced metabolites. This hypothesis was tested indirectly by comparing the relative potencies of 5α-dihydrotestosterone (5α-DHT), which cannot be converted to 5β-metabolities, and testosterone at inducing crowing in young gonadectomized male and female quail. The promotion of cloacal gland growth by these treatments was also assessed since there are no age-related changes in 5β-reductase in this organ. Silicone elastomer implants (2·5, 5 and 10 mm) containing 5α-DHT were more effective at stimulating crowing than similar implants of testosterone whilst there was little difference in their potency at inducing cloacal gland growth. These results are consistent with the hypothesis that brain steroid 5β-reductase regulates the behavioural activity of testosterone in the brain of young birds. J. Endocr. (1984) 100, 19–23

2012 ◽  
Vol 11 (3) ◽  
pp. 1981-1989 ◽  
Author(s):  
E. Gasparino ◽  
A.P. Del Vesco ◽  
S.E.F. Guimarães ◽  
S.C.C. da Silva ◽  
S.M. Marcato ◽  
...  

2017 ◽  
Vol 19 (1) ◽  
pp. 13
Author(s):  
Mitra Waty ◽  
Silvana Tana ◽  
Tyas Rini Saraswati

Quail child has a tremendous potential to continue further descent because quails have almost all the potential that can be exploited by humans, either for consumption or economic. Children quail superior quality can be produced from superior quality parent, so the parent quail quality must be considered. Additional food in the form of powder turmeric supplements can increase the phytoestrogen which stimulates the liver to produce vitellogenin as the  material forming the yolk. Egg yolk is a source of nutrients for the development of quail embryos. This study aimed to analyze the differences in the quality of the parent male quail chicks were given supplements of turmeric powder to the testis weight, testis size, number of spermatogonia and spermatids amount contained in the seminiferous tubules. The study design used was completely randomized design (CRD) that is 3 treatments and 5 replications. By using quail male child as much as 15 tails as test animals, divided into three groups, namely K0: F1 generation of the female quail are not given turmeric powder supplement, K1: F1 generation of the female quail turmeric powder supplemented with a dose of 54 mg/tail/day and K2: kuturunan F1 of the parent quail turmeric powder supplemented with a dose of 108 mg/tail/day. The variables measured were testis weight, testis size, number of spermatogonia and spermatids number. Data were analyzed using Analysis of Variance (ANOVA) followed by a further test Duncan Multiple Range Test (DMRT) at the 95% significance level. The results showed that the quality of parent child quail turmeric powder supplemented with a dose of 108 mg/tail/day for better views of the process of spermatogenesis. Keywords: Child  quail  (Coturnix  coturnix  japonica.  L),  Turmeric,  Testis,  spermatogonia, spermatids.


ZOOTEC ◽  
2018 ◽  
Vol 38 (1) ◽  
pp. 262
Author(s):  
Febrian Rotikan ◽  
L.J. Lambey ◽  
B. Bagau ◽  
J. Laihat

PRODUCTION PERFORMANCE OF FEMALE QUAILS (Coturnix coturnix japonica) UNDER DIFFERENT LIGTH ILLUMINATIONS. The objective of this study was to evaluate the duration effect of light illuminations on egg production performance of female quails (Coturnix coturnix japonica). Total of 80 female quails at the age of 3 weeks old were used in this study. The total of 4 birds were raised in the cage of 40x30 cm. Birds were randomly put in the cage using completely randomized design for the four treatments consisting of cage without light illumination (R0), cage with light illumination during 4 hours per day (R1), cage with light illumination during 8 hours per day (R2), and cage with light illumination during 12 hours per day (R3). Variables measured were feed consumption, age at first laying egg, egg production and egg weight. Results showed that light illumination did not significantly affect feed consumption, age at first laying egg, egg production and egg weight. Therefore, it can be concluded that production management of female quails (Coturnix coturnix japonica) did not need light illumination during 4, 8 and 12 hours per day. Key words: Female quail, Light illuminations, Production performance


2021 ◽  
pp. 101650
Author(s):  
Reneilwe A. Molele ◽  
Mohamed A.A. Mahdy ◽  
Musa Zakariah ◽  
Mohammed I.A. Ibrahim ◽  
Geoffrey T. Fosgate ◽  
...  

1983 ◽  
Vol 20 (3) ◽  
pp. 312-321 ◽  
Author(s):  
T. Matsui ◽  
S. Kuroda ◽  
M. Mizutani ◽  
Y. Kiuchi ◽  
K. Suzuki ◽  
...  

Two Japanese quail which were incapable of wing movement and three normal quail were examined by histological and ultrastructural methods. The diseased birds had glycogen deposits in their skeletal muscle, cardiac muscle, smooth muscle, and nerve cells of the brain and spinal cord. According to the distribution of the lesions and the characteristics of the deposited glycogen, the diseased birds had glycogenosis which was analogous to type II found in man. The usefulness of this disease as a model for glycogenosis in man is discussed.


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