Vol. 11, Special Issue 10 (2022)

Author(s):
Shivajee Pal, Brijesh Singh, Shive Kumar, RK Sharma, Anil Kumar, Anita, Deepikesh Joshi and Manoj Kumar Singh

Abstract:
To calculate a sire's breeding value for lactation traits, 184 Sahiwal daughters of 21 sires had their performance records kept at the institute's Instructional Dairy Farm from 1986 to 2017. The 305 days lactation milk yield, total milk yield, and peak yield were all considered as lactation traits. The estimates of breeding values were obtained using the Simple Daughter Average (D) and Best Linear Unbiased Prediction (BLUP) method. For all traits considered, the estimated breeding values (EBVs) of the sires revealed genetic variation between sires. By using the BLUP method of sire evaluation, the rankings of the first few top sires were found to be changed. The findings depict that not all sires would rank equally for lactation traits. However, the sire rankings for several traits showed that four to five of the best sires almost had comparable rankings in both methods.