Studies in flock mating of sheep. 4. The relation of libido tests to subsequent service activity of young rams

作者： PE Mattner , AWH Braden , JM George

关键词: Animal science 、 Ecology 、 Soil indicators 、 Biology 、 Flock 、 Mating 、 Environmental management system 、 Libido

摘要: … to service activity during flock mating, the number of services … as useful as the number of services performed in three hours … mount : service ratio provides a useful measure of the mating …