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Reproductive habits and fertility of indigenous cattle to artificial insemination in Uganda

Published online by Cambridge University Press:  27 March 2009

D. H. L. Rollinson
D. H. L. Rollinson
Affiliation:
Animal Health Research Centre, Entebbe, Uganda
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Extract

1. Records are presented of observations of the sexual behaviour of indigenous Uganda cattle and the fertility to artificial insemination.

2. The mean cycle length found was 20·9 days,s.d.1·38 days. Mean length of oestrus was 2 hr. 14 min.

3. Marked pro-oestrus and metoestrus periods occurred averaging 14 hr. and 11 hr. 7 min., respectively. The mean total length of time that cows remained attractive to the bulls was 26 hr. 21 min.

4. The number of services and attempts to serve by three bulls was recorded and frequent small grunts were noted to be an important expression of excitement by the bulls.

5. The highest percentage of animals conceived to artificial insemination when inseminated between 15 and 25 hr. after commencement of pro-oestrus.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 60 , Issue 2 , April 1963 , pp. 279 - 284
Copyright
Copyright © Cambridge University Press 1963

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