Selection of breeding boars

The first is the selection of reserve boars, which should be selected from the piglets born to a large number of adult sows, which are healthy, eat fast and have a large skeleton, symmetrical parts and lively temperament. The second is in line with the physical characteristics of the variety, the hindquarters are commensurate with the forequarters, the buttocks are wide and flat and long and muscular, and the tail root is thick and the tip of the tail is curly and swings freely without sagging. Third, the size of the abdomen is moderate, the nipples develop neatly and uniformly, and the number of nipples is not less than 7 pairs or reaches a specific standard. Fourth, the limbs are strong, sturdy and powerful, and the posture is correct. Fifth, the testes develop well, both left and right, large and obvious.