1. Feeding and feeding method Feed more concentrates from the first 15 days of production to the peak of milk production (30-40 postpartum), and feed less raw material. Starting from the 15th day before delivery, 1.5-1.8 kg of fine material per day is fed to each cow, and then 0.3-0.5 kg per day is added, and it is added until 1-1.5 kg per 100 kg of body weight. In the first 3 months after the calving of the dairy cows, the daily output reached a peak, and 0.3-0.5 kilograms of concentrate was fed daily until the peak of milk production. However, the maximum daily feed of the concentrates should not exceed 17 kilograms. After the peak period, feeding and management were conducted according to normal standards. 2. Limited-feeding method For healthy and well-fed dairy cows, limited-feeding can be implemented before delivery. During the dry-milk period, high-quality green and blue succulent feeds or hay are fed and less concentrate is fed (the daily feed amount must not exceed 4 kg. ) The burdock was fed 0.3 to 0.5 kilograms of concentrate each day after 1 week, until the fine feed reached 17 kilograms per day. 3. Alternating feeding method stimulates the appetite of dairy cows and achieves the goal of high yield and stable production. Concentrates should be fed periodically and periodically. From 10 to 20 days after milk production, dairy cows will feed 8 kg of hay a day and 7 kg of silage for 1 week, and then gradually reduce the concentrate to 3 kg. The amount of hay increased to 11 kg, and the amount of succulent feed (grass, vegetable leaves, and tuber feed, etc.) was kept at 30 kg. The rest was unchanged, so that it remained for 1 week and then gradually increased the concentrate. To 13 kilograms, until the peak period of milk production. China Agricultural Network Editor