“Before open†means that the pigs are fed several times a day or fed ad libitum before 50 kg of body weight, and the feed is not restricted. After weighing 50 kg, only two meals are served each day except for sufficient water. Each meal is only fed eighty-nine percent full, which is called "post-control." Because after 20 kg of pigs, the fat is mainly deposited and the growth is accelerated. If the feed is too full, the pig will have more fat and less lean meat. Tests have shown that when the weight of a pig is 40 to 60 kilograms, the amount of lean meat grown per day is 288 grams and the fat is 280 grams. After 60 kilograms, the length of lean meat is only 120 grams per day, and the fat is more than twice that of lean meat. Therefore, lean pigs must be controlled to be slaughtered at 90 to 100 kg.
Sewage Treatment Agent,Textile Sewage Treatment,Sewage Water Treatment,Industrial Sewage Treatment Agent
shizuishan pengsheng chemical co.,ltd , http://www.szspschem.com