Indian Journal of Animal Research

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Indian Journal of Animal Research, volume 47 issue 2 (april 2013) : 181-183

INFLUENCE OF NON-GENETIC FACTORS ON FORTNIGHTLY TEST DAY MILK YIELDS AND FIRST LACTATION 305-DAY MILK YIELD IN SAHIWAL CATTLE

V. B. Dongre, R.S. Gandhi, Avtar Singh, G.K. Sachdeva, R.K. Singh, Atul Gupta
1Dairy Cattle Breeding Division, National Dairy Research Institute, Karnal-132 001, India

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Cite article:- Dongre B. V., Gandhi R.S., Singh Avtar, Sachdeva G.K., Singh R.K., Gupta Atul (2024). INFLUENCE OF NON-GENETIC FACTORS ON FORTNIGHTLY TEST DAY MILK YIELDS AND FIRST LACTATION 305-DAY MILK YIELD IN SAHIWAL CATTLE. Indian Journal of Animal Research. 47(2): 181-183. doi: .

ABSTRACT

The data on 643 Sahiwal cows, maintained at NDRI Karnal were analyzed to study the effect of non-genetic factors period, season, days open and first lactation length on first lactation 305-days milk yield and fortnightly test day milk yields. The least squares means for first lactation 305-day milk yield was found to be 2005.28± 36.17 kg. The least squares means of overall fortnightly test days milk yields ranged from 5.07±0.17 kg ( Test day-1) to 8.58 ±0.19 kg (Test day-3). Effect of period of calving and first lactation length was found to be highly significant (P

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