Sows of sow selection

One level.

When piglets are 30-40 days old, piglets that meet the characteristics of the breed and develop well, with more nipples (more than 7 pairs) and neatly arranged, can be kept.

Second level.

In the 4 months old sows, in addition to defects, dysplasia or illness, healthy can be reserved for seed use.

Three levels.

At 7-8 months of age, the body size should be long, the abdomen should be large without sagging, the hindquarters should be large, and the sows with good nipples should be used for seeding.

Four levels.

In the primiparous sows, the breasts are full, the interval is obvious, the nipples are not stained with grass clippings, and the milking time is long.

Five levels.

Sows have significant loss after childbirth, and they recover quickly during pregnancy, and they gain weight quickly. This is what people often say, and they are thin and strong. During breastfeeding, the appetite is strong, and the digestion and absorption should be good.