At present, straw is the most basic feed in China's beef cattle fattening production. This is because the amount of straw is large and the cost is low. However, if adult cattle only feed straw, the crude protein content of the straw is low, the mineral content is low and unbalanced, the digestibility is low, and only the poor body condition can be maintained, and the weight can not be increased or even reduced. Therefore, it is necessary to supplement the feed to beef cattle. The principle is: 1. Nonprotein nitrogen such as protein feed or urea can be used to increase the level of available crude protein. For example, you can feed cottonseed cake, rapeseed cake or flax cake, about 2 kg per day. 2. Give priority to feed green feed, preferably legume feed, such as lotus root or fresh bean straw. Up to 0.7% of live weight or 25% of diet. There is no fresh green feed that can be replaced with silage. This can improve the digestive environment of beef cattle and improve production performance. 3. Complementary seed processing of the leftovers or corn, not more than 20% of dry matter in the diet is appropriate to prevent the digestibility of straw decreased. 4. Supplements animal byproducts such as bone meal or fish meal to supplement calcium, phosphorus, and ruminal eggs. 5. Supplementation of minerals and trace element additives. The authors developed a typical formulation of minerals and trace element additives for beef cattle fattening methods in northern China. Tests have shown that the daily gain of beef cattle can be increased by more than 15%. The purpose of supplementing the above feed is to make the nutrients of the diet more balanced so that the beef cattle can achieve a better fattening effect. China Agricultural Network Editor
Greenfarm Import And Export Co., Ltd. , http://www.jn-foods.cn