COLLECTION OF SEMEN FROM STALLIONS AT STUD

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Abstract
Semen was collected from 222 stallions of 13 breed or color types in southern Queensland and northern New South Wales [Australia]. A total of 648 collection attempts were made using an artificial vagina, during 4 consecutive breeding seasons (1974/1975-1977/1978). Modifications were made to the techniques used by previous workers because collections were made at commercial studs using minimal animal restraint. Of all collection attempts, 621 (96%) were successful, while at least one seman sample was collected from each of 216 stallions (97%). There were no signficant relationships between stallion collection failures and breeding season, time of year or age and breed of stallion. Time of year (seasons and months was the only factor having a signficant relationship with collection failures; highest failure rates occurring in autumn and winter. The techniques described are applicable for breeding soundness examinations of untrained stallions and for collection of semen for artificial insemination.

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