Incidence of repeat-breeding among Angus bulls ( Bos taurus) differing in sexual performance

Rams exhibiting relatively high levels of sexual performance (HP) repeat-breed the same female fewer times than low-performing (LP) rams. The objective of this study was to determine if HP and LP bulls differed in their tendency to repeat-breed individual females. Eighteen sexually experienced Angus...

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Bibliographic Details
Published in:Applied animal behaviour science 2003-04, Vol.81 (2), p.89-98
Main Authors: de Araujo, Jennifer Williams, Borgwardt, Reid E, Sween, Matthew L, Yelich, Joel V, Price, Edward O
Format: Article
Language:English
Subjects:
Bulls
Libido
Mate preference
Sexual behavior
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Summary:Rams exhibiting relatively high levels of sexual performance (HP) repeat-breed the same female fewer times than low-performing (LP) rams. The objective of this study was to determine if HP and LP bulls differed in their tendency to repeat-breed individual females. Eighteen sexually experienced Angus bulls (20–60 months of age) were tested individually with 10 unrestrained, estrous females. The sexual behaviors of all cattle were recorded until the bull achieved six services (ejaculations). Bulls were tested on 2 days with at least 10 days between tests. Frequencies of recorded sexual behaviors were higher for LP than HP bulls ( P
ISSN:0168-1591
1872-9045
DOI:10.1016/S0168-1591(02)00259-9