Indian Journal of Animal Research

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Research Article

Indian Journal of Animal Research, volume 51 issue 4 (august 2017) : 801-802

Evaluation of bull fertility of Sahiwal breeding bulls

B.C. Naha, A.K. Chakravarty, M.A. Mir, M. Bhakat, A.P. Singh, D. Maher
1<p>ICAR - Dairy Cattle Breeding Division,&nbsp;National Dairy Research Institute, Karnal-132 001, India.</p>
Cite article:- Naha B.C., Chakravarty A.K., Mir M.A., Bhakat M., Singh A.P., Maher D. (2016). Evaluation of bull fertility of Sahiwal breeding bulls . Indian Journal of Animal Research. 51(4): 801-802. doi: 10.18805/ijar.11156.

ABSTRACT

In the present investigation, bull fertility of Sahiwal breeding bulls has been studied. The study was conducted on records of 43 Sahiwal bulls maintained under 8 sets of Sahiwal breeding project at ICAR- National Dairy Research Institute, Karnal (India). The data on bull fertility of Sahiwal breeding bulls during 27 years (1987-2013) were analysed. The presented study revealed that the average conception rate based on first AI and overall conception rate of Sahiwal breeding bulls were estimated as 45.95% and 46.38 %. Average sire conception rate of Sahiwal breeding bulls range from – 2% to + 3% and – 2% to + 4 % for conception rate based on first AI and overall conception rate. It has been observed that the average conception rate based on first AI was lower as compare to overall conception rate and higher conception rate of Sahiwal breeding bulls is having higher sire conception rate.

REFERENCES


  1. Anonymousymous. (2011). NDRI Annual Report 2011 – 2012. Karnal, India. P.145.

  2. Anonymousymous. (2012). NDRI Annual Report 2012- 2013. Karnal, India. P. 159.

  3. Kuhn M., Hutchison J. and Norman H. (2006). Modeling nuisance variables for prediction of service sire fertility. J. Dairy Sci., 91: 2823-2835.

  4. Peñagaricano F., Weigel K. A and Khatib H. (2012). Genome wide association study identifies candidate markers for bull fertility in Holstein dairy cattle. Animal Genet., 43: 65-71.

  5. Singh M and Pant H. C. (1999). Effect of post-thawed interval to A.I. on conception rate. Indian Vet. J.,76: 67-68.

     
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