Agricultural Journal

Year: 2010
Volume: 5
Issue: 5
Page No. 283 - 285

Kappa Casein Gene Polymorphism and its Impact on Milk Yield and Reproductive Performance Traits of Chinese Holstein Cattle

Authors : A.E. Hamza, Z.P. Yang, X.L. Wang, R.J. Chen, H.T. Wu and A.I. Ibrahim

Abstract: The effect of Kappa Casein (K-CN) gene polymorphism on milk yield (305 day yield) and some reproductive performance (number of service/conception, calving interval, open period and gestation period) was investigated using 237 Chinese Holstein cattle. The polymorphism of K-CN was detected by Polymerase Chain Reaction-Single Strand Conformation (PCR-SSCP) technique. The obtained results elucidated that K-CN genotypes did not affect (p>0.05) 305 day milk yield; cows with genotype TT produced slightly higher milk than those of TC and CC genotypes. However, the effect of K-CN genotypes on reproductive performance revealed that K-CN genotypes were not significant (p>0.05) for any traits.

How to cite this article:

A.E. Hamza, Z.P. Yang, X.L. Wang, R.J. Chen, H.T. Wu and A.I. Ibrahim, 2010. Kappa Casein Gene Polymorphism and its Impact on Milk Yield and Reproductive Performance Traits of Chinese Holstein Cattle. Agricultural Journal, 5: 283-285.

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