In rural areas, most of the rural households still continue the traditional pig-raising law, that is, using "hanging shelves" feeding method. In the early period, a large amount of green and roughage feed was used, and only a very small amount of concentrate feed was used. When the pig grows to 50-60 kilograms. , and then a large number of high-energy concentrate feed for fast fattening. A small number of pig raising households use "one-stop" feeding methods, that is, they have been fed with condiments from piglets to slaughters without any green or roughage. Adopting "pour-feed method" to raise pigs can effectively avoid the drawbacks of "hanging shelf" rearing and "one-stop" rearing pigs, and can save 30% of concentrated feed compared to "hanging shelves" and "one-stop" feeding methods, respectively. And 10%, and "back-feeding" pigs high lean meat. The specific approach is: From the pig to the middle pig stage, that is, 50-60 kilograms before, mainly high-energy protein concentrates, with the necessary feed additives, only feed a small amount of green feed, do not feed any roughage. After the pig grows to 50-60 kilograms until it is slaughtered, the energy and protein levels in the concentrate are appropriately reduced, the input of fine material is reduced, and the input of green and rough feeds is increased. The ratio is: 63% of concentrated feed, 26% of green feed, Roughage 12%. Because pigs mainly use long bones and lean meats from pigs to mid-pigs, they need more protein and mineral elements, and at the same time pigs have very low fiber digestion and utilization. After reaching 50-60 kilograms, the digestive utilization rate of the fiber is increased, and the ability to resist rough feeding is enhanced. Therefore, the amount of roughage fed is increased.
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