Go to Top Go to Bottom
Asian-Australas J Anim Sci > Volume 23(1); 2010 > Article
Animal Reproduction and Physiology
Asian-Australasian Journal of Animal Sciences 2010;23(1): 13-16.
DOI: https://doi.org/10.5713/ajas.2010.80452    Published online December 22, 2009.
Effect of Exogenous Administration of Tamoxifen on Hormonal Profile and Sexual Maturity in Indian Native Kadaknath Fowl
A. Biswas, J. Mohan, K. V. H. Sastry
Abstract
The effect of exogenous administration of tamoxifen (TAM) on hormonal profile and sexual maturity in Indian native Kadaknath (KN) fowl was investigated. Day-old chicks from the same hatch were randomly divided into 15 groups with 20 chicks in each group (5 treatments3 replicates). The chicks were placed in battery brooders with wire-mesh floors and reared under uniform husbandry conditions (14 h light/d, 25-32C) on a standard basal diet. At the age of two weeks (wk), birds from the control group (T1) were injected with maize oil intramuscularly (I/M), whereas the other four experimental groups T2, T3, T4 and T5 were given tamoxifen (I/M) dissolved in maize oil at the rate of 0.5 mg (0.5 TAM), 1.0 mg (1.0 TAM), 2.5 mg (2.5 TAM) and 5.0 mg (5.0 TAM)/kg body weight, respectively, up to 30 wks on every alternate day. At every 6-wk interval, blood samples were collected from nine birds of each treatment group for estimation of estrogen and progesterone. The same birds were sacrificed for determination of the weight of ovary, oviduct, liver and adipose tissue. There was no significant difference in egg production traits except onset of lay and egg number. Low doses of TAM (T3) advanced the onset of egg laying by 15 days over the control. Tamoxifen influenced the hormonal profile (estrogen and progesterone) in a dose dependent manner. However, higher doses of TAM suppressed ovary and oviductal growth. From this study, it may be concluded that lower doses of TAM enhanced sexual maturity while higher doses suppressed ovary and oviductal growth.
Keywords: Kadaknath; Egg Production; Steroid Hormone; Ovary; Oviduct


Editorial Office
Asian-Australasian Association of Animal Production Societies(AAAP)
Room 708 Sammo Sporex, 23, Sillim-ro 59-gil, Gwanak-gu, Seoul 08776, Korea   
TEL : +82-2-888-6558    FAX : +82-2-888-6559   
E-mail : jongkha@hotmail.com               

Copyright © 2019 by Asian-Australasian Journal of Animal Sciences. All rights reserved.

Close layer
prev next