Breeding method for improving lean meat percentage of Meishan pigs
A lean meat rate, Meishan pig technology, applied in the field of animal genetics and breeding, can solve problems such as unsuitable market demand
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[0030] 1. Parent selection
[0031] 1) Female parent: The breed is Meishan pig, which is mainly distributed in Jiangsu in the lower reaches of the Yangtze River and in the Taihu Lake Basin at the junction of Zhejiang and Shanghai. The head is large and the forehead is wide, with deep folds on the forehead, and the ears are large and drooping. The whole body is covered with black or blue-gray hair, and the hair is sparse. The skin of the abdomen is mostly purple, and the extremities are white. The body weight of adult boars is 150-200 kg, the weight of adult sows is 150-180 kg, and there are as many as 8-9 pairs of nipples. Sexual maturity is early. When the boars are 4-5 months old, the semen quality has basically reached the level of adult boars. Pigs ovulate more in one estrus period. The average litter size of sows is 12.14 for the first litter, 14.88 for the second litter, and 15.61 for the third litter and above; it is a fat pig breed with a slow growth rate, 25- The dai...
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