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Pakistan Journal of Biological Sciences

Year: 2004 | Volume: 7 | Issue: 12 | Page No.: 2177-2181
DOI: 10.3923/pjbs.2004.2177.2181
Evaluation of Bulls Based on Semen Quality and Herd Fertility
M. P. Mostari, M.G. M. Rahman, M.A.M. Y. Khandoker and S. S. Husain

Abstract: The data of the present study were collected from Bangladesh Milk Producers` Co-operative Union Limited (BMPCUL) at Baghabarighat, Sirajgong, Bangladesh to evaluate the bull performance through semen quality and 30-day Non Return Rate (NRR). Data on 245 ejaculates and 12,750 services of almost same aged of 5 Sahiwal bulls (B1, B2, B3, B4 and B5) over a period of 5 years were collected from Animal Breeding Section and Cattle Feed Unit of BMPCUL. The significant (p<0.01) individual sire effect was found on semen volume, three stages of sperm motility (initial, on dilution and post-thawing) and fertility. Significant (p>0.05) variation was not found for pH. The highest volume of semen per ejaculate, the initial, on dilution and post-thawing sperm motility were found in bull B4 and representing 5.60±0.19 mL, 73.56±0.61, 69.27±0.33 and 63.90±0.48%, respectively. The highest sperm motility was found in initial stage and then declined steadily up to post-thawing stage. Significant (p<0.01) positive correlations were observed between the three stages of sperm motility and fertility. The results of the present study revealed that evaluation of breeding bulls on the basis of semen quality and herd fertility is important and provides the guideline of the way to sire selection for reproductive performance.

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How to cite this article
M. P. Mostari, M.G. M. Rahman, M.A.M. Y. Khandoker and S. S. Husain, 2004. Evaluation of Bulls Based on Semen Quality and Herd Fertility. Pakistan Journal of Biological Sciences, 7: 2177-2181.

Keywords: evaluation, semen, breeding bull and herd fertility

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