Cottonseed is an unprocessed, pure oilseed that is separated from cotton fiber. Cottonseed contains high-fat, high-protein, and cottonseed hull can protect fat and protein. After the cows eat cottonseed, they can directly pass through the first stomach to reach the fourth stomach or small intestine and be directly absorbed and utilized.

Adding cottonseeds to dairy cows' diets can increase the feed intake of dairy cows, increase the milk production and milk fat content in milk, thereby increasing the selling price of milk, and at the same time improving the natural estrus rate and conception rate of dairy cows. Cows are separated by parity and indirectly increase economic efficiency. In addition, because of the high fat content of the whole cottonseed, the body produces less heat, which can also slow the cow's heat stress in a hot environment. Compared with measures such as using fat or other rumen fat products, feeding cottonseed supplemented fat to overcome postpartum nutritional deficiencies is the most cost-effective method.

Cottonseed is generally used on dairy cows. Currently, there are no fixed methods for adding them. From the test reports, no matter how it is added, it can have a certain effect. According to the experiment, replacing 30% of the soybean meal and 2% of corn in the concentrate feed with 5% cotton seed showed that the appetite of the cows fed with cottonseeds was strong, the digestive power was enhanced, and the milk yield was higher than that of the cows fed the whole cottonseed. 1.1 %. Replacement of 5% corn with 5% cottonseeds resulted in an average increase of 0.05 kg per head per day for the cows fed with the cottonseeds, compared with 0.23 kg for the non-additional cows. Daily replacement of 10% concentrate with 0.9 kg of cottonseeds fed the cows showed that the whole milkseed group increased the fat percentage by 0.12%, which was significantly higher than that of the control group.

At the peak lactation period of dairy cows, 1 kg of whole cottonseed was added to the daily diet. The cows fed the whole cottonseed group had 1.73 kg of milk production per day and the milk fat percentage increased by 0.15% compared with the cows of the non-addition group; the average body weight of the cows in the experimental group was higher than that of the control group. An increase of 12 kg; cows in the experimental group had a 30% increase in the natural estrus rate of the cows compared to the control group.

However, it must be noted that because of the presence of gossypol in cottonseeds, the excessive feeding amount may have a toxic effect on dairy cows. Therefore, it is necessary to grasp the feeding amount of the supplements. Generally, one to two kilograms of feed should be fed per head per day, up to a maximum of 2.5 kg. However, when the total dietary dry matter contains less than 15% of the cottonseed products (whole cottonseed or cottonseed meal), it is generally not necessary to consider the toxicity of gossypol or the adverse effects of gossypol on reproduction.

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