1. During the prolific period of lactation, the digestible total nutrients in the cow's feed should be high and should contain enough crude fiber. The feed preferably includes seed or animal fats with high oil content such as cottonseeds, soybeans and the like. During this period, crude protein in dairy cow diets should account for 16%-18%, calcium 0.7%, phosphorus 0.45%, and the crude-to-crude ratio should be controlled as much as 50-46:50-54. In order to avoid a drop in butterfat ratio, crude fiber should not be less than 17% (accounting for dry matter in the diet). The milk cows with a weight of 600 kilograms and a milk production of 40 kilograms per day are composed of 12 kilograms of concentrate, 25 kilograms of silage, 4 kilograms of hay, and 5 kilograms of juicy feed.
It has been determined that high-yielding dairy cows eat enough feed, and they have to eat at least 8 hours per day. At present, in the case of milking three times a day, the intake time of dairy cows is generally not enough, and the milking period of dairy cows should extend the feeding time and increase the number of feedings.
2. During the mid-lactating period, the milk production of cows began to decline gradually, and the decline rate was generally 6%-8%. At the same time, after the pregnancy of the cow, the nutritional needs of the cow have been reduced. This feature should be seized so that it can eat more hay and supplement the concentrate properly so that the milk production and fat percentage can be maintained at a relatively high level. The lactose ratio of the mid lactation diet can be controlled at 40-45:55-60.
3. During the late lactation period, the milk production of cows has dropped significantly. At this time, it is relatively easy to raise milk. This stage should be used to intensify the recovery of the milk body status. There is still potential for milk production during this period, so cows cannot be overgrown.
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