Genetic parameters were estimated for growth and reproductive traits in the Kenya Boran cattle fitting a multivariate animal model. Heritability estimates for birth weight, weaning weight (WW), 12-month weight, 18-month weight and 24-month weight were 0.36, 0.40, 0.38, 0.21 and 0.17, respectively while estimates for age at first calving (AFC), calving interval in the first and second parities were 0.08 0.04 and 0.16, respectively. Genetic correlations between growth traits were positive and ranged from 0.36 to 0.94. The genetic correlations between reproductive traits were negative and ranged from -0.18 to -0.30. The genetic correlation between AFC and WW was positive (0.72). Selection for improvement of both reproductive and growth traits should be practised with caution given the strong positive correlation between WW and AFC.

C. B Wasike, J. MK Ojango, Alexander K Kahi

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 03.90, 2006
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