Feeding raw materials to pigs not only saves manpower, financial resources, and electricity, but also increases feed intake for pigs, promotes pig growth, increases pig weight gain, and early slaughter, reduces feed consumption, increases feed remuneration, and increases pig-raising efficiency. Must pay attention to feeding methods. Feed selection Raw feeds are mainly selected from camphor seeds, such as corn, wheat, rice and other by-products such as glutinous rice, rice bran, bran, etc. In particular, when concentrated feeds are mixed into mixed feeds, they cannot be cooked or boiled with boiled water. Otherwise, the nutrients in the feed will be severely damaged and the utilization rate will drop by 15% to 20%. Green feeds are also fed raw, as most proteins and vitamins are destroyed when cooked. Soybean, soybean cake, peanut cake and other feeds contain an anti-trypsin, which will hinder the decomposition of legume proteins by trypsin in pigs. Such feeds can not be fed raw, and should be fed after high temperature treatment. The raw material feeding method is divided into wet feeding and dry feeding. Wet feeding means that the feed and water are mixed in proportions to feed the pigs in chunks. The most suitable ratio is 1:1, and the maximum cannot exceed 1:2. The mixed feed should be hand-held into a group and it should be scattered. Dry feeding is to feed compound feeds to dry powdered pigs, but it is often necessary to provide clean drinking water. The raw material should be crushed and the diameter of the crushed raw material should be 1.2 mm to 1.8 mm. This kind of powdered pig is refreshing, has a large feed intake, is long and fast, and has high utilization rate and good efficiency. If the diameter is less than 1 mm, pigs tend to stick their mouths when eating, affecting palatability, and may cause gastro-intestinal diseases; particle diameter greater than 2 mm, rough feed, poor palatability, pigs do not love feeding, affecting growth. Green feed and concentrate feed separately When the pig is hungry, the stomach and intestines will secrete large amounts of digestive juice. Concentrated feed is rich in nutrients, small in size, less in crude fiber, suitable in palatability, high in quality, easy to digest, and easy to absorb. It is best to feed concentrates first. If green feed and concentrate feed are fed to pigs, they will be fed separately due to the large volume and moisture of green feed, which will reduce the digestion and absorption utilization of concentrate feed. When you have a good grasp of the amount of feed you need to feed your pigs, you must master the amount of feed according to the size of the pig and the different stages of growth. The piglets are fed 6 times a day, and the finishing pigs are fed 4 times a day. The interval time should be even and it is appropriate to feed 90% full. The day of feeding of boars is controlled between 2 kg and 2.5 kg, and the breeding period is increased to 3 kg to 3.5 kg. The daily feeding amount of pregnant sows is 2 kg to 2.5 kg, which can be increased to 4 kg to 5 kg during lactation. Supply sufficient water Whether dry or wet, pigs should be provided with clean drinking water all year round, otherwise they will be affected by the lack of water, which will affect the growth and development of pigs. It will also cause diseases, especially for sows who are lactating. , otherwise affect the secretion of milk, resulting in lack of milk, affecting the growth and development of piglets.
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