Abstract
The research was conducted to evaluate the effect of non - genetic factors on production traits in Deoni cattle. Data representing 114 Deoni cows from 211 total records of lactation over a 30 years period were analysed to determine the effect of age at first calving, season of calving and period of calving on production traits. The overall least squares means of lactation milk yield, peak milk yield, days to reach peak milk yield, lactation period and dry period were 358.31 27.18, 3.14 0.18, 44.81 2.52, 213.90 13.74 and 211.93 26.23. The age at first calving were significant effect on lactation milk yield, peak milk yield and days to reach peak milk yield, whereas non significantly affected on lactation period and dry period. All sources of variation for season of calving on production traits were non significant. The period of calving had significant effect on lactation milk yield, peak milk yield and dry period, whereas non significantly affected on days to reach peak milk yield and lactation period. Keyword: CCBP, Deoni, Genetic factors, Production, Traits,
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