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Factors and Treatment of Anestrus in Ewes

Author(s)

Hao Caihong

Affiliation(s)

Hao Caihong Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences，Qiqihar, Heilongjiang, China.

Abstract

In normal circumstances, the average time of estrus cycle is 22 days, and the duration is about 1-4 days, which has obvious and typical external estrus characteristics. However, there are also some ewes, the regularity of estrus is not in line with the normal estrus of the ewe, influenced by physiological, nutritional composition, disease, age, stress and other factors. Whether abnormal estrous ewes are frozen sperm mating, fresh sperm mating or not, their conception rate is significantly lower than the normal estrous ewe individual or groups. This paper gives a brief and detailed introduction to the reasons for the occurrence of non-estrus and abnormal estrus in several ewes. The growth hormone stimulating estrus of ewes has long become a necessary technical method in the sheep industry. This technical method has improved the breeding rate of ewes and the economic profit of the farm, and has been widely promoted and applied in many farmers.

Keywords

Ewe; Non-Estrous; Growth Hormone; Treatment; Method

References

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