Читать книгу Bovine Reproduction - Группа авторов - Страница 187

Libido is not assessed during the routine breeding soundness examinations of bulls, so it is up to the producer to ensure that the bull is actively servicing cows. Producers should take care to observe that intromission is achieved when a female is mounted and make note of the date when the individual was serviced. Breeding injuries and lameness are best identified early so that treatment can be initiated and adjustments made before the herd's reproductive performance is reduced. Routine observation of the herd and documentation of breeding activity during the breeding season is especially important in the single‐sire breeding group to prevent loss or reduction in the calf crop.