In the case of house-feeding, the rations are mainly based on green roughage, with the appropriate mix of feed, and with reference to feeding standards. If cornmeal, wheat straw, rice straw, etc. are used as the main feed for roughage, they should be combined with high-quality forage grass and supplemented with mixed concentrates and vitamin A or carotene. Pregnant cattle are prohibited from feeding feeds such as cottonseed cakes, rapeseed cakes and distiller's grains, and they cannot feed frozen, moldy feeds. Drinking water temperature requirement is not lower than 10°C. Feeding sequence of feed, in the case of less concentrated feed and juicy feed, the first coarse finish is used, that is, the rough feed is fed first, and after the cow is half-saturated, some concentrate or multiple juice is mixed in the coarse feed. The crumbs were used to induce cows to eat more food. Finally, the remaining fine ingredients were all fed, and the trough was eaten. If the amount of fine material is large, it can be refined in the order of the first and the second.

If it is based on grazing, grass season should extend the grazing time as much as possible, and generally it is not necessary to feed. During the subtilis season, the type and quantity of supplemental forage should be determined according to the quality of pasture, the condition and the nutritional needs of the cattle. Especially in the second to third trimester of pregnancy, the key feeding should be performed, and carrots should be fed 0.5-1 per head per day. Kilograms are supplemented with vitamin A, supplemented with concentrate to meet the overall needs of pregnant cattle for nutrients. Concentrates, 0.8 to 1.1 kg per cow per day, concentrate formula: corn 50%, bran 10%, oil cake 30%, sorghum or barley 7%, limestone or bone meal 2%, salt 1%, another Add 1 million IU of Vitamin A or single carrot. Late pregnancy should do a good job of fetal protection, regardless of grazing and feeding, should prevent collision, sprint. Pay attention to observation before delivery and ensure safe delivery. When the feed conditions are good, excessive fat and lack of exercise should be avoided. Adequate exercise can enhance the body of the cow, promote the growth and development of the fetus, and prevent dystocia. The difficult-to-produce yield of breeder cattle is high, especially for the first-born cows.

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