Controlled Breeding in Farm Animals

(partial) Control and Manipulation of Reproduction in Cattle: Introduction to controlled breeding in cattle. The cow's oestrous cycle. Artificial control of oestrous and ovulation. Pregnancy testing in cattle. Control of calving. Reducing the calving interval. Embryo transfer in cattle. Induction of twin births. Breeding cattle at younger ages. Control and Manipulation of Reproduction in Sheep: Introduction to controlled breeding in sheep. The ewe's oestrous cycle and seasonal breeding activity. Artificial control of oestrous and ovulation. Fixed-time sheep artificial insemination. Advancing sheep breeding season. More frequent lambings in sheep. Induction of multiple births. Pregnancy testing in sheep. Control of lambing. Embryo transfer in sheep. Breeding sheep at younger ages. Control and Manipulation of Reproduction in Pigs: Introduction to controlled breeding in pigs. The sow's oestrous cycle. Artificial control of oestrous and ovulation. Pregnancy testing in pigs. Control of farrowing. More frequent farrowings in pigs. Increasing litter-size in pigs. Embryo transfer in pigs. Breeding pigs at younger ages. Control and Manipulation of Reproduction in Horses: Introduction to controlled breeding in horses. The mare's oestrous cycle and seasonal breeding activity.