(1) Immersion method
The raw materials such as glutinous rice cakes, beans, cereals, and dried cane, etc., can be crushed and then soaked in water to make them absorb water, swell, soften, and be easily digested. The method is: the crushed feed placed in the cylinder or barrel soaked in water, the ratio of material and water is 1:1, winter and spring with warm water, soak 4-6 hours, cool water in summer and autumn, soak 3 hours to feed the pig.
(2) Seed feeds such as soybeans, wheat, sorghum, and corn fed with the roasting method can all be roasted and processed to convert starch in the feed into dextrins, increasing the aroma and improving the palatability of the feed. Raw soybeans contain antitrypsin. Roasting can destroy the activity of this enzyme and help digestion.
Seed feeds used for feeding pigs and growing pigs are not suitable for roasting so as not to reduce the biological value of proteins, especially the limited amino acid (lysine) absorption rate.
(3) cooking method
Cooking eliminates the antitrypsin contained in raw soybeans and improves the digestibility of soybeans. Cold-pressed bean cakes and soybean cakes should also be cooked and fed; sweet potato boiled can increase feed intake by 10% to 17% compared to raw feed; wheat bran, after steam treatment, increases available energy by 30% for mixed feeds of unknown origin. If the water, etc., should be cooked and fed.
(4) pulping method
The fine material is crushed and then soaked in water for fermentation. For the cereals, the feed can also be soaked in warm water (15-20°C) for 2 days. When it is softened with slightly sour taste, it can be grinded and fed to pigs to increase the appetite and increase feed intake.
(5) Germination
The germination treatment of the seed-like feed can convert some of the starch in the feed to maltose, decompose the protein in the feed into easily digestible simple substances, improve the palatability, and increase the carotene, vitamin B2 and vitamin E at the same time. The content. Barley, wheat, oats, rice, etc. can be made into germination feeds to supplement the sources of vitamins for winter and early spring feed.
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