The amount of fat to be fed is appropriate: The amount of fat in the diet of dairy cows should not exceed 7% of dry matter in the diet, and the amount of supplement is generally 3% to 4%.
Calculate the amount of fat to be accurate: The amount of fat that cows need depends on the amount of butterfat. If a dairy cow produces 36 kilograms of fresh milk per day, the milk fat rate is 3.5%, and the fat content in one day is 1.27 kilograms, to maintain the cow's normal condition and continuous production level, 1.27 kilograms of fat should be added to the diet.
Feeding different sources and types of fat: Do not use only one fat in production. For example, the only fat that uses soybean as a diet can cause an excess of degradable protein in the rumen, affecting feed intake. Gossypol poisoning occurs when cottonseeds are fed more than 3.6 kilograms per day, resulting in reduced visceral bleeding and reproductive performance. Liquid fats are not suitable for the feed of lactating cattle.
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 cow and sheep oil can increase milk production. Wolfberry and cottonseed have a good synergy and can accelerate the digestion of cottonseed.
Feeding fat should be gradual: Gradually increasing the amount of fat can avoid the problem of poor palatability. He began to feed 1/3 first, and fed the whole amount in 3 stages. Generally it takes 3 to 4 weeks. You can gradually add fat during the dry period. It usually takes 3 days for cows to adapt to fat. Compared with other feeds, cows are slower to eat fat. It is best to add fat to the fully mixed diet and mix thoroughly with the other ingredients. If this is not possible, feed as much fat and feed as possible.
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