Effect of genetic and non-genetic factors on milk yield and milk constituents on Sahiwal cattle

DOI: 10.18805/ijar.5711    | Article Id: B-2976 | Page : 808-810
Citation :- Effect of genetic and non-genetic factors on milk yield and milk constituents on Sahiwal cattle .Indian Journal Of Animal Research.2016.(50):808-810

M.K. Verma, G.K. Sachdeva, Alok Kumar Yadav*, S. Gautam1, M.M. Ali2 and S. Bindal2

alokvet3842@gmail.com
Address :

Division of Dairy Cattle Breeding, ICAR-National Dairy Research Institute, Karnal-132 001, India

Submitted Date : 31-03-2015
Accepted Date : 1-05-2015

Abstract

The present study pertained to records on milk production and milk constituents of 259 Sahiwal cattle with 600 lactations spread over a period of 10 years from 2001 to 2010, collected from Dairy Cattle Breeding division of National Dairy Research Institute, Karnal, Haryana. To study the effect of various genetic and non-genetic factors on milk yield and milk constituents traits, mixed model least square analysis was used for analysis of data. Overall least square mean for all lactation traits of total milk yield (TMY), milk yield in 305 days or less (305MY), lactational average fat % (LFA) and lactational average solid not fat % (LSA) were 1880.39 ± 73.82 Kg, 1782.97 ± 68.37 Kg, 4.71 ± 0.01 % and 8.81 ± 0.01 % respectively. Analysis of variance showed that the differences were statistically significant for the effect of sire on TMY and 305MY; period on all the traits except TMY; parity on 305MY. However the effect of season of calving was not found significant on all the traits.

Keywords

Genetic factors LFA LSA Mixed model Non-genetic factors TMY 305MY

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