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Asian Journal of Animal Sciences
  Year: 2007 | Volume: 1 | Issue: 2 | Page No.: 67-75
DOI: 10.3923/ajas.2007.67.75
Effect of Varying Levels of Whole Cottonseed Supplementation on Onset of Puberty, Response to Oestrus Synchronization with PGF and Artificial Insemination in Friesian x Bunaji and Bunaji Heifers
P.P. Barje, O.W. Ehoche, L.O. Eduvie, A.A. Voh Jr. and G.N. Akpa

Abstract:
Twenty Friesian x Bunaji crossbred and twenty-four Bunaji prepubertal heifers were fed 4 diets containing 0, 25, 50 and 75% whole cottonseed to determine effect of varying the level whole cottonseed on onset of puberty, response to oestrus synchronization with PGF and artificial insemination. The animals were fed the diets for 140 days. At the end of the feeding trials, oestrus synchronization was carried out on all the animals using PGF, injected intramuscularly in 2 doses of 2 mL each given 13 days apart. Compared to animals on the control diet (0% whole cottonseed diet), there was a slight delay in onset of puberty (age at first detection of palpable ovarian structures and first oestrus) with inclusion of whole cottonseed in the diet. Following oestrus synchronization with PGF, interval from treatment to onset of oestrus increased. Compared to the animals on the control diet, oestrus response rates, oestrus activities (vis-à-vis number of mounts) and heat duration declined significantly (p<0.05) in both Friesian x Bunaji and Bunaji heifers with increasing level of whole cottonseed in the diet. Level of whole cottonseed had no effect on conception rates of Friesian x Bunaji heifers. However, there was significant decline in pregnancy rates of animals fed 25, 50 and 75% whole cottonseed diet compared to the control (averaged pregnancy rates = 100, 80.3, 40.2 and 80.3% for the Friesian x Bunaji and 66.7, 50.0, 50.0 and 50% for the Bunaji on 0, 25, 50 and 75% levels of whole cottonseed, respectively).
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How to cite this article:

P.P. Barje, O.W. Ehoche, L.O. Eduvie, A.A. Voh Jr. and G.N. Akpa, 2007. Effect of Varying Levels of Whole Cottonseed Supplementation on Onset of Puberty, Response to Oestrus Synchronization with PGF and Artificial Insemination in Friesian x Bunaji and Bunaji Heifers. Asian Journal of Animal Sciences, 1: 67-75.

DOI: 10.3923/ajas.2007.67.75

URL: https://scialert.net/abstract/?doi=ajas.2007.67.75

 
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