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Effect of Genetic and Non-Genetic Factors on Production Performance of Sahiwal Cattle

Devesh Kumar, Chandra Bhan Singh, Devendra Kumar, Shiv Kumar, Bijendra Narayan Shahi, Balbir Singh Khadda.

Abstract
The present study was conducted on 308 Sahiwal cows sired by 38 bulls spared over a period of 32 years (1981- 2012), maintained at instructional dairy farm and AICRP on cattle -Sahiwal (field unit) at G.B.P.U.A. & T., Pantnagar Uttarakhand and Chak Ganjaria Government Cattle Farm Lucknow, Uttar Pradesh. The overall least- square means for first lactation milk yield (FLMY), 305 days first lactation milk yield (305 FLMY), first lactation length (FLL), first peak yield (FPY), and days attain to first peak yield (DAFPY) were as 1927.5036.68 kg, 1965.0527.30 kg, 290.425.57 days, 11.150.39 kg and 41.782.97 days, respectively. Highly significant effect (P

Key words: Genetic and Non-Genetic Factors, Lactation Traits, Least-Square Means, Sahiwal


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