Relationship between the sexual performance of bulls and their behavioral responses to non-sexual novel stimuli

Individual differences in the sexual reaction times and ejaculation rates (serving capacity) of 14 beef bulls were compared with their behavioral responses to a novel arena and to novel non-sexual visual and auditory stimuli. Correlation coefficients for ejaculation rates were consistently low and nonsignificant, but bulls that were most inhibited by the novel environment/stimuli exhibited the longest latencies for first mount and ejaculation. The emotional reactivity of bulls may be more closely related to their sexual inhibitions than to measures of reproductive success.