Raising sheep's fertility coup

Different breeds of sheep, differences in nutrient conditions, temperature levels, and age will all affect their fertility and economic benefits. This article describes the measures that should be taken to increase sheep fertility.

Steps to be taken to increase sheep fertility: Different breeds of sheep, differences in nutrient conditions, temperature levels, and age will all affect their fertility and economic benefits. What measures should be taken to increase sheep fertility?

First, hybridization promotes multifarious. The introduction of multiple-tyed breeds and the use of multiple-species breeds to cross-breed with local breeds are the fastest, most effective and easiest way to increase fertility. With the introduction of excellent meat multi-species rams, and the domestic fine varieties of Small Tail Han sheep, Hu sheep, Chinese merino, Northeast fine-wool sheep, etc., to improve the reproduction of local sheep.

Second, choose to keep more lambs. The number of litters of ewes is affected by heredity, and there is a high probability that twin lambs will be raised by twin lambs. Election of ewes above the twin lambs for breeding is an important way to improve sheep fertility.

Third, breed multiple breeds. Many ewes with early maturation, high lambing rate, estrus throughout the year, strong lactating performance, good maternality, strong brooding rate, and strong disease resistance; and fast growth, high feed utilization, and strong adaptability. Good quality rams.

Fourth, improve the nutrition of the flock. Improving the nutritional status of male and female ewes is an effective way to increase the fecundity of sheep. Throughout the year, the ewes are not only estrus, but also have an increased number of ovulation. Short-term superior feeding of ewes before mating can increase the number of twin lambs. The ram's nutritional status also affects the conception rate, lambing rate, birth weight, and weaning weight. Feeding male and female ewes with full-priced nutrients has a high conception rate and lambing rate, and lambs have a large initial weight.

Fifth, leave the age of ewe. The ratio of fertile ewes in sheep is more than 60%, which is an important way to increase the fecundity of herds. If the proportion of rams (rams after being castrated) is too high, it is not conducive to raising the fecundity of the sheep. Although the sheep can shear wool, they should be slaughtered in time after the fall, otherwise the body weight will decline significantly after winter, causing forage and artificial waste, which is very uneconomical. If the proportion of ewes is large, it can breed more ewes, which can increase the fecundity of the herds, expand reproduction, and increase economic efficiency. Older ewes after 7 years of age should be gradually eliminated according to the situation, and young ewes are replenished each year, so that the number of ewes of the appropriate age is constantly expanding.

Sixth, strengthen feeding management. A kind of ram. The materials for the rams should be easily digested, small in size, good in quality, and suitable for palatability. They should be fed with less raw material and juicy material, and be fed with more concentrates to promote their strong physique, energetic, sexual desire, and species condition. In addition, 10 grams of calcium phosphate is best supplemented by each ram per day, which has an effect on sperm production and vitality. 2 Ewe. Reasonable feeding can guarantee the normal estrus of sheep, improve the conception rate and lambing rate and the health of lambs. Pre-pregnancy (about 3 months), generally do not need to feed, to two months after the pregnancy, the fetus grows fast, at this time should increase the fine material. There must be sufficient exercise during pregnancy to benefit the health of the ewes and the development of the fetus. Feed should not have frost, mildew, avoid drinking ice or cold water. Pay attention to the sheep's care when it comes to lamb production.

Seven, early weaning induced estrus. The early weaning of lambs using artificial milk and artificial lamb-raising techniques can shorten the lactation period of the ewes and allow the ewes to ejaculate earlier. In eclampsia period, hormones and biological treatments are used to cause normal estrus and breeding of ewes, shortening the reproductive cycle of ewes, and improving sheep fertility. First, the lambs were weaned early, then the ewe was treated with progesterone, and subcutaneous injections of maternal serum gonadotropin (a glycoprotein hormone) from 600 to 1100 IU resulted in estrus and multiple ovulation; the light cycle was adjusted. The white pheasant is shortened to achieve the purpose of ovulation. Before the normal mating season, male and female rams were mixed to advance the mating season and shorten the time from post-production to ovulation and mating, so as to increase ewes fertility.

VIII. Elimination of inferior ewes. The first year of infertility of ewe should be checked to find out the reasons and overcome. If you are still infertile the next year you should eliminate it. In the first year of production, the ewes of the dead lambs have a higher proportion of dead lambs and should be eliminated.

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