Under the conditions of house feeding and semi-house feeding plus supplementary feeding, the carcass weight of the six-,twelve-and eighteen-month-olds and adults of Lezhi Black Goat were 15.65kg, 2 1.88kg, 26.84kg, 33. 13kg, and the slaughter rates were 50.42% and 50.00, respectively. The percentage of clean meat was 36.95%, 38.96%, 37.48% and 37.29%, respectively, and the carcass weight of ewe was 13. 13kg, 17.66kg, 2 1.84kg and 26.

Lezhi Black Goat has good meat production performance, the fresh meat is ruddy, tender and juicy, fresh and tasteless, and the fat is evenly distributed. Through the determination and analysis of mutton in different parts, the muscle distribution in different parts of Lezhi black goat is reasonable, and the high-quality meat (shoulder blades and hind legs) accounts for more than 60% of all the other stages, except for 6-month-old ewes.

According to the mutton market survey and the cost accounting of raising sheep, the slaughter weight of Lezhi black goat should be 30 ~ 35 kg, and the mutton ram should be slaughtered at the age of 5 ~ 7 months and the ewe at the age of 7 ~ 9 months, which has the best economic benefits.