Puberty in Corriedale, Criollo and Junin Male Sheep in the Central Sierra of Peru (Pubertad en Machos Ovinos Corriedale, Criollo y Junin en la Sierra Central del Peru)

摘要

The study was conducted during three years (April 1981 - March 1984). Four lambs per breed grazed on native pasture were used to measure the age, live body weight and scrotal circumference at time of penis detachment. Semen characteristics were also studied beginning at the first ejaculation through 18 months of age. Breeds differed significantly in the mean age at penis detachment.