Feeding pigs with raw materials not only saves manpower and financial resources, but also increases pig feed intake, promotes weight gain, and reduces feed consumption. Raise feed remuneration, but must pay attention to the method of feeding. 1, raw feed selection can choose to feed raw feed is mainly grass seed, such as corn, wheat, rice and Other processing by-products, such as rice bran, wheat bran and so on. After the above-mentioned feed was cooked, the loss of nutrients was over 13%, and the feeding effect was equivalent to only 87% of the raw feed. In addition, green feed should also be fed. When cooked, most proteins and vitamins are destroyed. However, feeds containing legume seeds, such as soybeans, bean cakes, peanut cakes, and bean dregs, contain an anti-trypsin that prevents the breakdown of legume proteins by trypsin in pigs. Therefore, these feeds cannot be fed and must be fed after high temperature treatment. 2, the raw feed method has to pay attention to raw feed can be divided into two kinds of wet and dry feed, the ratio of wet feed and water can not exceed 1:2.50, otherwise it will reduce the secretion of digestive juice, reduce the activity of digestive enzymes, affect the feed Digestion and absorption, the most appropriate ratio should be 1:1. Stir the feed so that water droplets can be squeezed out. Dry feed is fed in powdered form and fed after feeding. The benefits of dry feeding: First, the feed is not easy to degenerate, can be fed for a few days, saving labor; the second is to facilitate the production of compound feed to the pig. 3, raw materials should be disinfected raw feed to pigs should pay attention to washing and disinfection, so as not to infect parasites. The disinfection method can be soaked with lime water or potassium permanganate solution. The best way is to plant the feed site, not using pig manure or using unfermented manure, to prevent the eggs from being contaminated. Rapeseed cakes, cottonseed cakes, fresh cassava, buckwheat, etc., containing certain toxins, must generally be crushed, immersed in water, fermented or ensiled, etc., and other toxins removed before they are fed. 4, the raw material crushed should be suitable for raw material crushed particles with a diameter of 1.20-1.80 mm. This type of grain pig is refreshing, has a large feed intake, and is long and fast. Its diameter is less than 1 mm. Pigs tend to stick their mouths when eating, affecting palatability, and can easily cause gastric ulcers. Diameters greater than 2 mm are rough and poorly palatability. Pigs do not like to eat. 5. The digestive juice is most prosperous when the raw material is fed separately to the pigs when they are hungry. The concentrate feed is rich in nutrients, small in size, less in crude fiber, good in palatability, high in quality, and easy to digest. Therefore, it is necessary to feed the concentrate first. If the concentrate is mixed and fed, the volume of the green material is large, the moisture is high, and the precision is reduced. The digestibility and absorption rate of the material, and the excessive moisture in the green material can dilute the digestive fluid, thereby reducing the digestive function. 6, the amount of raw feed should be suitable for raw feed to feed the pig, the amount of feed due to different growth stages and production performance of pigs are different. Piglets and fattening pigs can be allowed to feed freely, and breeding pigs are not. They must be supplied in a quantitative manner. Otherwise, due to overfeeding, fat deposits may be caused and affect breeding. Usually non-breeding species of boar concentrates daily dosage to be controlled at 2 - 2.50 kilograms, breeding period can be fed to 3 - 3.50 kilograms, sows during pregnancy, the amount of consumables is 2 - 2.50 kilograms, breast-feeding period is 5 - 6 kg. 7, to provide enough water to dry feed the pig, to supply enough water. Drinking water in winter is 2-3 times that of dry feed, 4 times in spring and autumn, and 5 times in summer. In particular, lactating sows and piglets must not be deficient in water, otherwise they will affect the sow’s milk secretion. The water quality should be clean and the water temperature should be kept cool in winter and cool in summer. 8. When the raw meal is changed to a gradual transition from clinker to raw meal, there must be a transitional period in which 1/3 of the feed is fed to the raw meal. After 3-5 days, it is changed to 2/3. After another 3 to 5 days, all the raw materials will be changed. Otherwise, the pig's intake and weight gain will be affected. The amount of feed should be controlled in the first few days after raw materials are changed to prevent pigs. Indigestion caused by eating too much food.
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