(2) The nutrition of dairy cows is closely related to growth and milk yield. According to the nutritional needs of dairy cows, reasonable matching of concentrate and coarse feed can maximize the production potential of dairy cows and improve milk production. In addition, due to the reasonable collocation of cow feed, the supply and demand of energy, protein and trace elements can be balanced, so that the amino acids in the feed can approach or reach the "ideal protein" model, thus maintaining the amino acid balance, improving the feed utilization efficiency and reducing the feed waste.
(3) Scientific nutrition supply is conducive to producing pollution-free dairy products and reducing environmental pollution. According to the production requirements of pollution-free livestock products and the guidelines for the use of feed and feed additives, the procurement, preparation, processing and feeding of feed raw materials for dairy cows are strictly controlled, and the quality of dairy products is controlled by regulating the nutrition of dairy cows, while reducing the nutritional factors that pollute the environment, so as to achieve the effect of producing dairy products with low cost, high efficiency and low pollution.