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Lamb mortality in a flock of East African Blackheaded sheep

Published online by Cambridge University Press:  27 March 2009

J. C. M. Trail  and
G. D. Sacker
J. C. M. Trail
Affiliation:
Department of Veterinary Services and Animal Industry, Uganda
G. D. Sacker
Affiliation:
Department of Veterinary Services and Animal Industry, Uganda
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Extract

1. The effects of birth weight, sex, twinning, parity of dam and dry season on mortality rates of lambs were studied between birth and weaning at 20 weeks in a flock of East African Blackheaded sheep.

2. The mean birth weights of non-surviving lambs were lower than those of surviving lambs. Singles from gimmers and twins from ewes were 0.5 and 1.0 lb., respectively, lighter at birth, and had higher mortality rates than singles from ewes. The overall mortality rate of singles from ewes was 16%, singles from gimmers 20% and twins from ewes 28%. Male and female lambs born alive had similar mortality rates (18%).

Type
Research Article
Information
The Journal of Agricultural Science , Volume 66 , Issue 1 , February 1966 , pp. 97 - 100
Copyright
Copyright © Cambridge University Press 1966

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References

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