1. Select from pig breeds: Improved breeds grow faster than native breeds. Piglets produced by high-yield male and female sows have faster growth than those produced by low-producing sows and sows. It is best to select the parent's production records for the selected piglets. To facilitate selection; lean-type pigs grow faster than fat-type pigs, with good meat quality and high feed utilization rates; hybrid pigs grow faster than purebred pigs and have heterosis. 2, from the individual choice: should choose the body is strong, weight, lively action, powerful tail swing. Physically well-proportioned, skin, coat shiny pig. 3, from the aspect of choice: eyes large and prominent, flexible and godly, mouth-shaped oblate, thin lips, upper and lower lip flush; ears are large and thin, can be up and down or extended; forehead flat, slightly wide, no wrinkles; The nostrils are wide, the hind feet are tall and straight, and the back feet are frequently raised when eating. The body is long, big, and straight. The chest is well developed. The nipples are sparse and the connection is oval. Masks are a kind of sanitary products. Generally, they are worn on the mouth and nose to filter the air entering the mouth and nose to block harmful gases, odors, droplets, viruses and other substances. They are made of gauze or paper. Disposable Face Mask,Non-Woven Face Mask,Medical Surgical Mask,Face Mask Shandong Kangshun Daily Products Co., Ltd , https://www.centurybenifit.com
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