Performance of Sahiwal and its Jersey Crosses for reproductive traits in different lactations
2009
Hadge, M.R. | Kuralkar, S.V. | Ali, S.Z. | Kharkar, K.P.
The data on the 267 lactation records including 192 records of Sahiwal cows and 75 records of Sahiwal x Jersey crossbred cows maintained at Bull Mother Farm, Wadsa dist. Gadchiroli (M. S.) from 1989 _ 2007 on basis of first, second and third more than three lactation were considered for study. The mean age at first calving in Sahiwal cows and Sahiwal x Jersey crossbred cows were 1241.36 ± 24.81 and 984.93 ± 33.13 days respectively. Decreasing trend of service period and calving interval occurs with increasing lactation number in Sahiwal and Sahiwal x Jersey crossbred. High repeatability estimates of the studied traits indicated the possibility of selecting cows based on first lactation.
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