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Causes of dystocia in ewes

2021-02-20

1. Mating too early. Among the dystocia ewes, about 68% are primiparous ewes, and about 58% of them mate after the first estrus. This is because in terms of physiology, ewes usually reach sexual maturity at 5-6 months of age, but at this time the body has not matured. Such as breeding, it will affect its growth and development, which will easily lead to dystocia.

 
2. The selection of varieties is unreasonable. About 60% of the ewes that have dystocia are closely related to the size of the fetus. The vast majority are due to the mating of the ewes with the oversized rams, especially when the ewes are not fully mature. Difficult delivery is very easy.
 
3. Improper feeding and management during pregnancy. One of the factors that cause dystocia in ewes is the nutritional disorder during pregnancy. The body’s muscle contraction is weak due to lack of nutrition, which shows a weak clinical effort, coupled with the poor vitality of the fetus and it is difficult to produce; on the contrary, If the nutrition is too high, the fetus will be too large and difficult to enter the birth canal, resulting in a relatively narrow birth canal, resulting in difficult delivery.


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