Fat has many nutritional functions. It supplies energy to the body and generates 2.25 times the energy of carbohydrates. It is a component of the cow's body and repairs raw materials. It provides essential fatty acids for animals. It is used as a solvent for fat-soluble vitamins to promote absorption and transport. It is also fat in milk. source. Therefore, lack of fat in the diet can lead to growth stagnation, reproductive rate, and disease resistance, as well as reduced milk production and milk fat percentage. In addition, fat can maximize the energy needs of high-yielding dairy cows. Especially in the early stage of milk production, the high-yielding dairy cows are in a state of negative energy balance. Adding fats and oils in the diet can enable the cows' energy metabolism to reach a positive balance, thereby leading to the emergence of milk production peaks in advance, increasing milk production and reducing nutrient metabolism. The occurrence of the disease. The principle of giving fat to cows The amount of fat to be fed should be appropriate. The amount of fat in the dairy cow diet should not exceed 7% of the dry matter in the diet. Under normal circumstances, the basic dairy cow diet itself contains about 3% of fat, therefore, the supplement should be 3% -4%. 2. Calculate the amount of oil to add accurately. The amount of fat that cows need depends on the amount of fat. If a dairy cow produces 36 kilograms of fresh milk per day, and the butterfat ratio is 3.5%, then the fat content per day is 1.26 kilograms. If the cow's normal body condition and continuous production level are maintained, 1.26 kilograms of fat should be added to the diet. 3. Feed different sources and types of oils. The effect of adding fats to the feed of dairy cows depends on the source and type of fats and fats. Therefore, do not use only one kind of fat in production. For example, the use of soybean as the only fat in the diet will cause an excess of degradable protein in the rumen, affecting the feed intake of the cow. Daily feed of cottonseeds exceeds 3.6 kg. Gossypol poisoning occurs in dairy cows, leading to visceral bleeding and reduced reproductive performance. At the same time, it should be noted that liquid oils are not suitable for the feed of lactating cattle. 4. Pay attention to the interaction between oil and roughage. When adding fat, consider the type of roughage that makes up the diet. When silage corn is used as the main forage, only the addition of sheep and beef can increase milk production. The wolfberry is used as the main fodder to add cottonseeds to the feed. Tylvalosin Tartrate,Tylvalosin Premix,Tylvalosin Veterinary Drug,Tylvalosin Tartrate Pig Shandong Shengli Bioengineering Co., Ltd , https://www.shenglipharm.com