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Genetic and environmental influences on beef cattle production in Zambia 3. Carcass characteristics of purebred and reciprocally crossbred castrated males

Published online by Cambridge University Press:  02 September 2010

W. Thorpe ,
D. K. R. Cruickshank  and
R. Thompson
W. Thorpe
Affiliation:
Central Research Station, Mazabuka, Zambia
D. K. R. Cruickshank
Affiliation:
Central Research Station, Mazabuka, Zambia
R. Thompson
Affiliation:
ARC Unit of Statistics, University of Edinburgh, Edinburgh EH9 3JZ
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Abstract

Carcass characters for 365 male castrate cattle of the Africander, Angoni, Barotse and Boran breeds, and the reciprocal crossbreds of the latter three breeds, are reported. In each of the two year-of-birth groups, different slaughter-age/management regimes were used. For all carcass characters, except those related to size, the two sanga breeds, Africander and Barotse, were very similar, as were the two zebu breeds, Angoni and Boran. The introduced breeds, Africander and Boran, which had similar carcass weights, had heavier carcasses (+18 kg, +10%) than the indigenous Barotse and Angoni breeds.

The sanga breed carcasses had less fat cover than those of the zebu breeds. Maternal effects were not important for carcass characters and the Angoni/Barotse and Angoni/Boran crosses showed no heterosis. In the Barotse/Boran crosses, slaughter and carcass weights and eyemuscle area gave between 8% and 9·5% heterosis, and the linear carcass measurements between 2% and 3%.

It was concluded from the management comparisons that there was no economic advantage in delaying slaughter to the later of the two ages compared in the two year-of-birth groups.

Type
Research Article
Information
Animal Production , Volume 30 , Issue 2 , April 1980 , pp. 245 - 252
Copyright
Copyright © British Society of Animal Science 1980

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References

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