During the year, according to the physiological stage of the ewes, it can be divided into three periods: empty period, pregnancy and lactation. (1) The empty ewe period The ewe is in the grass season. As long as we grasp the time to grazing, we can meet the nutritional needs of the ewe. However, for individuals with poor body condition and malnourished sheep, they should strengthen feeding and management before mating and give short-term excellent feeding. The short-term excellent feeding is to strengthen the nutrition of the ewes 1 to 1.5 months before breeding and raise the raising level so as to increase the weight and constitution of the ewes before mating in the short term, and promote the ovulation of the ewes to be neat and ovulate. This is to increase the breeding rate. Effective technical measures. There are two methods for short-term excellent feeding: First, extend the time of grazing, put more excellent grazing land and glutinous rice, eat less grass while walking, salt and drinking water, and promote ewes to increase their weight. Second, besides grazing, appropriate supplements. Feeding concentrates to increase the nutritional level of ewes to achieve full mating. (B) Pregnancy Pregnancy (first 3 months) Due to the slow development of the fetus, the nutrients needed are not more than the empty period, so the general grazing can satisfy. Especially during the grass season, there is no need for feeding. Only in rough season, when grazing is insufficient, add some roughage. In the second trimester (last 3 months), the fetus grows rapidly, and 80% to 90% of its initial weight is grown at this time, so this phase requires a higher level of nutrition. In the second trimester of pregnancy, the average ewes need to increase kilograms, and their metabolism and energy metabolism are 30-40% higher than those of empty ewes. In order to meet the physiological needs of the ewes during the second trimester, grazing alone is not enough and must be supplemented. According to grazing and feeding conditions, the following standards may be added or subtracted as appropriate. Each sheep was supplemented with 0.45 kg of compound concentrate, 1-1.5 kg of hay, 1 kg of silage, 0.5 kg of carrot, and 5 g of bone meal. During ewe pregnancy, all management measures should be considered around the miscarriage. Do not allow sheep to eat frosty grass or moldy feed, do not drink ice and water, and do not frighten the sheep. When the flock grazes, grazing, water, and feeding, it must be slow and steady to prevent crowding and slipping. It is also necessary to prevent jumps and jumps. It is better to grazing on relatively flat pastures. Keep the sheep house warm and dry. ,good ventilate. (c) The lactation period during lactation can be divided into pre-lactation and post-lactation periods. In the pre-lactation two months after the birth of the lamb, the nutrition of the lamb depends mainly on breast milk. If the ewes are well-nourished, the milk will be sufficient, and the lambs will have good development, strong resistance to diseases, and a high survival rate. If the ewes are poorly nutritious, the milk production will inevitably decrease, not only affecting the growth and development of the lambs, but also because of the high consumption of the ewes, and the constitution will soon be thin. For most areas, pre-lactation is just sprouting in the withered grass or grass, and grazing alone cannot meet the nutritional needs of the ewes. The condition of the ewes should be considered, and the single and twin lambs should be given different standards for supplementation. Monoborn lambs produce 0.3-0.5 kilograms of mixed concentrates, 0.5 kilograms of hay and alfalfa hay, and 1.5 kilograms of juicy feed. The double-born lamb produces 0.4-0.6 kg of mixed concentrate, 1 kg of hay and 1.5 kg of juicy feed. By the end of lactation, that is, after two months of age, the gastrointestinal function of the lamb has been improved, and the grass can be used in large quantities and crushed concentrates. It no longer depends on breast milk to survive, and the lactating ability of the ewes is gradually declining. Even if the amount of supplementary feeding is increased, it is difficult to reach the amount of lactation in the pre-lactation period. For ewes in the late period of lactation, grazing should be adopted as the main method of feeding, and supplemental feeding should be gradually cancelled. For the ewes during the weeding period, some green hay can be properly supplemented. For lactating ewes and lambs, usually within 1 week postpartum should be house-fed or grazing in a closer quality pasture. After 1 week of grazing, it should also be noted that grazing should be from short to long distances from near to far, and pay attention Changes in the weather, in the event of strong winds, rain, and snow, should be preceded by a rush of sheep. Ewes with better lyricism don't feed concentrates and succulent feed and only feed some hay during the 1-3 days of lamb production to prevent indigestion or mastitis. During the week prior to weaning of lambs, the ewes should also reduce the amount of succulent feeds, silages, and concentrates to prevent mastitis during weaning. China Agricultural Network Editor