Under normal feeding conditions, dairy cow feed costs account for more than 60% of fresh milk production costs. Therefore, the rationality of dietary cooperation is not only related to the performance of dairy cows' health and production performance, the utilization of feed resources, but also directly affects the economic benefits of dairy cows. The factors affecting the cow's diet are: cow's weight, milk production, milk composition (milk fat, milk protein percentage), milk lactation stage, and cow's parity. The following factors can affect the use of nutritionally balanced diets by dairy cows: 1. The palatability of the diet; 2. The number of feedings per day; 3. Feeding methods: (eg, complete mixed feeding, computer controlled concentrate feeding) Method and first coarse and fine feeding method, etc.); 4, feeding method; (single feeding or group feeding). Basic principles for dairy cow diet: 1. Based on feeding standards, and make necessary adjustments for specific conditions (such as ambient temperature, feeding methods, feed quality, processing conditions, etc.). 2, to make full use of local feed resources, a reasonable mix of feed. For example, malt root, corn germ cake, etc. can be utilized, which has a good effect on reducing feed cost and saving concentrate. 3, should pay attention to the overall balance of nutrition, according to the quality of the feed or the season, feeding methods, appropriate adjustment of the proportion of related raw materials in the feed formula. In addition, it is necessary to select raw materials with appropriate volume and good palatability.
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