The Relationship of Semen Production to Sexual Excitement of Dairy Bulls

Abstract
22 bulls were allowed to be near a non-esteous cow for 2-3 min., and then to make a mount without serving the artificial vagina. The number of motile sperm obtained at ejaculation was 41% more than that obtained when the bulls were allowed to ejaculate immediately after coming from the barn to the collection stall. This difference was highly significant ( P < 0.01).