Vol. 7, Issue 3 (2018)

Author(s):
Vani S, Sakunthala Devi K, Maheswara Reddy D and Aparna Reddy N

Abstract:
The breeding values of 15 Holstein Friesian sires were estimated from the Lactation milk yield and Peak yield by applying three sire evaluation methods viz., simple regressed least squares (SRLS), best linear unbiased prediction (BLUP) and restricted maximum likelihood methods (REML). The restricted maximum likelihood method had lowest error variance and highest coefficient of determination for both lactation milk yield and peak yield and it was considered to be the most efficient method. For actual lactation milk yield, the SRLS method was second best efficient method followed by BLUP method based on error variance and coefficient of determination.