Diverse reasonable assurance nutritious green feed in the feed, forage, concentrate feed three, green material with water and more bulky, easily digestible, palatable, and contains a variety of vitamins, minerals and proteins; crude bulky materials, higher crude fiber content, with reasonable diet and digestive juices can increase the contact surface, and have a laxative effect, easy to make sense of fullness pig, but it is difficult to digest; concentrate is characterized by small size, nutrition high-value, easy to digest, but minerals, vitamins compared lacking.
Note that dietary intake volume and measure the relationship between the size of the available volume of feed dry matter content of the feed is calculated. Pig weight by 100 kg dry matter per day required to feed 2.5 kg - 4.5 kg computing, green materials, coarse material, three kinds of feed dry matter concentrate 5:3:2 need, such as a 150 kg weight pregnancy day by 5 kg of dry matter of feed required to calculate, then 2.5 kg of dry matter from green material (green material 6 kg of dry matter can be obtained one kilogram), 1.5 kg of dry matter from the coarse material, one kg of dry matter from concentrate.
Do feed palatability, and easy to digest with the feed, such as those containing high energy and protein and less crude fiber, the palatability, easy to digest; contrast, with low energy and protein, crude fiber, the palatability poor, it is difficult to digest. When feed, forage should use more, use less roughage and roughage with the requirements of good quality.
According to different groups choose different types of diets in general, sub-pigs, boars, fattening phase of fattening pigs, the choice of fine material type, that is fine material can account for more than 50% of the total weight of the diet; breed, female backup pigs can choose green material type, that can account for more than forage diets total weight of 50%; feeder pigs can choose type of bran, bran feed that can account for more than 50% of the total weight of the diet.