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Diverse and reasonable, ensuring comprehensive nutrition. Among the three kinds of feeds for feeding pigs, such as green, coarse and fine, the green material has many water content, large volume, easy to digest, good palatability, and contains a variety of vitamins, minerals and protein; the coarse material is bulky and thick. High fiber content, reasonable combination, can increase the contact surface of feed and digestive juice, and has a laxative effect, easy to make pigs have a feeling of fullness, but difficult to digest; concentrate is characterized by small size, high nutritional value, easy to digest However, minerals and vitamins are scarce.
Note the relationship between dietary volume and pig intake. The feed volume can be calculated from the dry matter content of the feed. According to the daily dry feed of 2.5 kg to 4.5 kg per 100 kg of body weight of pigs, the dry matter of three feeds of green, coarse and fine materials needs 5:3:2, such as a weight of 150 kg. Pregnant sows, the daily dry matter required to be calculated according to 5 kg, then 2.5 kg of dry matter from the green material (green material 6 kg can get 1 kg of dry matter), 1.5 kg of dry matter from crude material, 1 kg dry The substance comes from the concentrate.
It is easy to digest the feed with good palatability, such as high energy and protein, less crude fiber, good palatability and easy digestion; on the contrary, low energy and protein, containing more fiber, it is palatable Poor sex, difficult to digest. When using pig feed, it is advisable to use green fodder, use less roughage, and the quality of the roughage is good.
According to different pigs, different types of diets are used. In general, piglets, boars, and fattening pigs in the fattening stage can use concentrate type, that is, concentrate can account for more than 50% of the total weight of the diet; breeding sows, The gilts can be selected from the green type, that is, the green feed can account for more than 50% of the total weight of the diet; the shelf pig can be used with the bran type, that is, the bran feed can account for more than 50% of the total weight of the diet.
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