Rank correlation study of average daily and 305 day milk yield in Murrah buffalo

23-Title: Rank correlation study of average daily and 305 day milk yield in Murrah buffalo

Authors: Vijay Kumar, AK Chakravarty, PR Shivahre, Ankit Magotra and Atul Gupta

Source: Ruminant Science (2015)-4(1):99-101.

How to cite this manuscript: Kumar Vijay, Chakravarty AK, Shivahre PR, Magotra Ankit and Gupta Atul (2015). Rank correlation study of average daily and 305 day milk yield in Murrah buffalo. Ruminant Science 4(1):99-101.

Abstract

Use of first lactation average daily milk yield (MY/FLL) instead of first lactation 305-days or less milk yield (FL305DMY) is of more interest in genetic evaluation because of variability of lactation days in dairy animals. Data pertaining to MY/FLL and FL305DMY of  Murrah buffalo during 1993 to 2010 were collected and adjusted against significant environmental influences. An attempt is being made in the present investigation to compare the estimated breeding values (EBVs) of Murrah bulls through least-squares method for FL305DMY and MY/FLL. The rank correlations between two traits were highly statistically significant indicating that MY/FLL equally effective to discriminate amongst sires.

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