Abstract

The data on 909 Sahiwal cows sired by 97 bulls raised at three government Livestock Experiment Stations in Punjab (Pakistan), during the period 1968-1992 were analysed to study the performance of Sahiwal cattle. Six traits of economic importance (milk yield, lactation length, dry period, age at first calving, calving interval and service period) for first parity were included in this study. The average milk yield was 1613.1 ± 12.5 kg with an estimate of heritability as 0.276 ± 0.06. The means (days) for lactation length, dry period, age at calving, calving interval and service period were 270.7 ± 1.5, 190.4 ± 3.7, 1369.1 ± 6.7, 461.1 ± 3.6 and 175.4 ± 3.6, respectively. The heritability estimates for these traits were 0.142 ± 0.05, 0.045 ± 0.04, 0.147 ± 0.06, 0.110 ± 0.05 and 0.078 ± 0.05, respectively

M. Ahmad, S. Sivarajasingam

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 23: Opening: plenary; technology; transfer; beef cattle; dairy cattle; pigs., , 399–402, 1998
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