The object of this study was to test practical ways of influencing behaviour of bulls used for artificial insemination. Dairy bulls that were sexually active with regular semen collections were compared with sexually inactive bulls housed elsewhere, after being sampled in artificial breeding as yearlings. The behaviour of bulls in response to various volatile compounds and mixtures was recorded. These behaviours included sniffing and licking of sample, tongue manipulation, vocalization and flehmen. Single compounds found as volatile compounds in oestrous blood did not evoke appreciable responses. Mixtures of these compounds evoked some response, but the most powerful stimulus was urine collected from teaser bulls. Most sexually active and inactive bulls responded quickly to urine soaked cloths brought near them. Sexually active bulls, while in their familiar semen collection area with mount bulls, paid little attention to the urine as compared with licking the teaser bulls. It was concluded that with this visual stimulus the effect of olfaction stimulus on sexual arousal of dairy bulls was minimum.
|Publication Title||Applied Animal Behaviour Science|
|Author Address||Department of Animal Science, Cornell University, Ithaca, NY 14853-4801, USA.|
|Cite this work||
Researchers should cite this work as follows: