The amount of fat to be fed should be appropriate. The fat content of dairy cows should not exceed 7% of the dry matter of the diet. The amount of supplement is generally 3-4%.
Calculate the amount of fat added to be accurate. The amount of fat a cow needs depends on the amount of milk fat. If a cow produces 36 kilograms of fresh milk per day, the milk fat percentage is 3.5%, and the amount of milk fat per day is 1.27 kilograms, 1.97 kilograms of fat should be added to the diet if the cow's normal condition and sustained production level are to be maintained.
Feed different sources and types of fat. Do not use only one type of fat in production. For example, the use of soy as the only fat in the diet can lead to an excess of degradable protein in the rumen, affecting feed intake. Gossypol poisoning occurs when cottonseed feeds exceed 3.6 kg or 4.5 kg per day, resulting in reduced visceral bleeding and reproductive function. Liquid fats are not suitable for use as a feed for lactating cows.
Pay attention to the interaction between fat and roughage. When adding fat, consider the type of roughage that makes up the diet. When corn silage is used as the main forage, only the addition of cattle and sheep oil can increase milk production.苜蓿 has a good synergy with cottonseed, which can speed up the digestion of cottonseed.
Feeding fat should be gradual. Gradually increasing the amount of fat fed can avoid the problem of poor palatability. Start feeding 1/3 first, and feed the whole amount in 3 stages. It usually takes 3-4 weeks. Fat can be gradually added during the dry period. It takes three days for a cow to adapt to fat. Compared to other feeds, cows eat fat at a slower rate. It is best to add fat to the fully mixed diet and mix thoroughly with the other ingredients. If you can't do this, try to mix the fat and feed as much as possible.
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