Breeding management of ewes
The ewe's empty season differs depending on the lambing season. The breeding season of sheep is mostly concentrated in September-November and May and June in the following year. Ewes that produce winter lambs are generally free in May-July. Ewes that produce lambs are usually idle in August and October. At this stage, the ewe's breeding task is to make it as soon as possible to restore the body condition above the middle to facilitate breeding. Emotional fertility rates for females above average body condition can reach 80%-85%, and only 65%-75% for poor condition. Therefore, proper supplementation and timely weaning of the lambs should be carried out according to the body condition of the nursing ewes, and the ewes should be returned to the body as soon as possible. One and a half months before mating, breeding of breeding ewes should be strengthened. Grazing pastures with rich and nutritious grassland should be selected to extend grazing time so that ewes can eat as much quality pasture as possible, restore body condition as soon as possible, promote estrus, and increase conception rate. And double lamb rate. Ewes with poor body condition can adjust the body condition by supplementing part of the concentrate. The feeding and management of ewes in the early pregnancy has an important role in improving their fertility and productivity. Ewes are not estrus within 17-20 days of mating, indicating that they are pregnant. Ewes not only need to ensure their own nutritional needs, but also to meet the needs of fetal development. The first trimester of pregnancy is pre-pregnancy. The fetus develops slowly and weighs only 10% of the lamb's birth weight. In the pre-pregnancy period, the ewes have a strong ability to digest roughage. As long as they do a good job of grazing and maintain the body condition of the ewes at the time of mating, they can meet their nutritional needs. When entering the subtilis season, appropriate supplementary feeding should be carried out to fully meet the needs of the fetus for growth and tissue and organ differentiation for nutrient substances. Each day, it is recommended to supplement 0.25 kg of high quality hay, 0.2 kg of mixed concentrate, and the straw can be freely eaten.
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