Small Tail Han Sheep

The strong reproductive ability of small-tailed chills is its prominent feature, manifested in early sexual maturity, can be estrus mating. Therefore, mastering its one-child polyculture can not only increase the reproductive rate, shorten the breeding cycle, but also greatly increase economic efficiency. First, improve the conception rate. The key to raising the lambing rate is to do a good job of breeding. To seize this central link, it is necessary to abandon backward and free mating methods and adopt a combination of assisted mating and artificial insemination. Through the observation method and the test method, we grasp the best timing of mating, use the technique of estrus in the same period, and focus on the estrus in a predetermined period of time, and then organize and match the species rationally. In order to increase the conception rate, mating can be performed twice in the morning and evening according to the estrus interval of the sheep. In this way, not only can the utilization rate of rams and the quality of offspring be improved, but also the lambing season can be concentrated to facilitate the management of lambs and increase the reproduction rate. Second, the implementation of groups, sub-circle feeding sheep. In order to ensure the normal development of the fetus, different feeding and management methods are adopted for different periods of fetal development. Generally, the ewes after conception are divided into four groups: primary pregnancy group, post-pregnancy group, labor group, and nursing group. . According to the growth and development characteristics of each group, scientifically formulate full-priced feeds. In the formula, according to the characteristics of the lambs of one lamb and one lamb, pay special attention to the addition of vitamins and green feeds to ensure the demand of various nutrients for the ewes and lambs during pregnancy. Especially for the nursing groups, the lambs should be weaned in time without affecting the growth and development of the lambs, so that the ewes can recover their physical strength as soon as possible, conceive as soon as possible, and shorten their breeding cycle. Third, grasp the reproductive years. Small Tail Han sheep have high yields of multiple births and fewer single lambs. The proportion of twin lambs per birth is very high. From the statistical point of view, the fifth lamb has the highest lambing rate. From an age point of view, the fecundity of the 3-4 year old ewes is the strongest, showing the high reproductive rate, large lamb birth weight, and rapid growth and development. Under normal circumstances, the breeding age of the ewe is 8-10 years. Ewes more than 10 years old must be castrated and fed into the fattening group.

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