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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2007 > Volume 6 Number 2 > G.O. Adeyemo, O.G. Longe and D.O. Adejumo

The Reproductive Performance of Breeder Cocks Fed Cottonseed Cake-based Diets

G.O. Adeyemo, O.G. Longe and D.O. Adejumo
Department of Animal Science, University of Ibadan, Ibadan, Oyo State, Nigeria
Abstract :

Histology of the testes of breeder cocks fed replacement levels of 0, 25, 50, 75, or 100% of cottonseed meal (CSM) for soybean meal (SBM) in five different breeder diets for fifteen weeks were investigated in a completely randomized design. Chemical analyses were carried out to determine the crude protein (CP) and gossypol content of CSM. The 23 week-old breeder cocks were fed the experimental diets for 15 weeks, euthanized and their testes removed for histological studies. The determined CP and gossypol
contents of CSM were 35.11% and 570 g/ton respectively. The daily sperm production (DSP) by the breeder
cocks was depressed when CSM dietary inclusion was above 50% with DSP values ranging from 1.5×109
to 2.9×109/mL. The investigation showed that replacing 75% SBM with CSM was not injurious to the nonreproductive health of the breeder cocks. However, CSM may not replace more than 50% of SBM for breeder cocks because of the depressing effect of gossypol on sperm production when this level is exceeded.

Keywords :
Breeder cocks, cottonseed meal, daily sperm production, histology, reproduction

Date Deposited : 14 Jul 2011 11:13

Last Modified : 14 Jul 2011 11:13

Official URL: http://www.pjbs.org/ijps/ijps.htm

Volume 6, Number 2, - 2007 , ISSN 1682-8356

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