1ICAR-National Dairy Research Institute, Karnal-132 001, Haryana, India
2ICAR-National Dairy Research Institute, Southern Regional Station, Bengaluru-560 030, Karnataka, India
*Corresponding Author: M. Mohan, ICAR-National Dairy Research Institute, Karnal-132 001, Haryana, India, Email: mohanmalayaperumal@gmail.com
Online published on 1 December, 2023.
Animal phenotype performance depends on both genetic and non-genetic factors, but mostly the genetic part analysed leaving non genetic parameters unnoticed. The aim of the study is to understand impact of non-genetic factors governing milk yield performance in Deoni cows.
A total of 821 lactation records from 340 lactating cows (2002-2017) along with their age at first calving, parity, season of calving were collected. These data were standardized and analysed to find significant differences using Duncan's multiple range test.
Deoni cows showed significant increase (P<0.05) in both lactation milk yield and lactation length with increase in parity. Season of calving had significant affects (P<0.05) on lactation milk yield but not in lactation length. Increase in age at first calving revealed there was a significant difference (P<0.05) in both lactation milk yield and lactation length.
Age, Deoni, Milk yield, Lactation length, Season
