In the early pregnancy, due to the slow development of the fetus, there is no obvious difference between the required nutrients and the empty period. Therefore, it should be kept in accordance with the method of empty period, and the focus is still on catching the sputum and maintaining a good degree. Due to the lack of green forage grass in winter, the nutritional value of forage grasses decreased, and the nutritional needs of ewes could not be met. Therefore, supplementation of concentrate feed must be considered. In breeding, it is necessary to use mainly fetal protection. Do not feed forage grass and frost grass with ice, and do not drink ice water, so as to avoid miscarriage and falling fetuses. During the second trimester of pregnancy, the fetus grows quickly. In the later stages of ewes' pregnancy, supplements must be strengthened. High-quality hay and concentrates should be supplemented at this time. Attention should be paid to the supplement of protein, calcium and phosphorus. In the late pregnancy, the amount of concentrate per day is about 0.6 kg, and the protein level in the concentrate is generally 15% to 18%. The energy level should not be too high. Do not raise the ewes too well to avoid adverse effects on the fetus. In general, when feeding, feeding 1.0-1.5 kilograms of green hay, 1.0-2.0 kilograms of silage, and 0.6 kilograms of mixed concentrate. Fire safety goggles are a kind of protective equipment for firefighters to protect eye safety during rescue operations. It is one of the personal protective equipment of firefighters. It can also be used in construction, laboratory, industrial production, chemical and other environments. fire protection goggles,fire goggles,fire protection goggles price,fire Eyes Protection Goggles joho(HK) Technology Co. , Ltd. , https://www.joho-safety.com