Abstract
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.
Publisher
Cambridge University Press (CUP)
Subject
Genetics,Agronomy and Crop Science,Animal Science and Zoology
Reference26 articles.
1. Rowson L. E. A. (1959). Collection, dilution and storage of semen. In Reproduction in Domestic Animals, ed. by Cupps and Cole, vol. II, p. 75.
2. The effect of sexual stimulation prior to service on the behaviour and conception rate of bulls
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