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Treatment of Ewe Infertility Cold Regions

Author(s)

Hao Caihong

Affiliation(s)

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

Abstract

Due to the deterioration of the climate, the pure natural grassland in four seasons aquatic grass supply is not balanced in Heilongjiang province. In Winter and Spring, the shortage of grass is more serious, leading to the lack of nutrients in herbivorous livestock, which causes a delay in estrus and the long-term empty pregnancy of the ewes occurs. To address this challenge, research has shown that the amniotic fluid preparation of healthy ewes has certain effects on ewes with ovaries and long-term corpus luteum, which can promote estrus and ovulation and conception in ewes. This method has effectively improved the selling rate and litter rate of some long lying ewes, greatly increased the breeding rate of cows, and made the sheep industry develop more effectively and rapidly. However, sheep diseases are also emerging one after another, in which ewe infertility is one of the important diseases causing economic harm, and the incidence rate has a slow rising trend. Infertility of ewes refers to the condition in which ewes reproduce at an appropriate age, resulting in long-term non-estrus, frequent unsuccessful reproduction, or susceptibility to minor illnesses. There are many factors that cause ewe infertility, which can be divided into 2 categories.

Keywords

Ewe; Infertility; Treatment; Economic Income

References

[1] Zhang Hui. Effect of diet nutrition on the reproductive performance of ewes [J]. Modern Animal Husbandry Technology, 2019 (8): 252. [2] Gao Bo. Several diseases and prevention and control measures leading to ewe infertility [J]. China's Livestock and Poultry Seed Industry, 2018 (6): 69. [3] Wang Zhenyu, Cheng Shuanzhi. Effect of nutrient deficiency on sheep reproductive disorders and solution countermeasures [J]. Heilongjiang, 2019 (6): 18-19. [4] Wang Feng, Wang Yuanxing. Cattle and sheep reproduction science [M]. Beijing: China Agricultural Press, 2003:76- -93. [5] Wang Yuqin. Progress in concurrent estrus in sheep [J]. Livestock and poultry industry, 2003 (4): 4- -6. [6] Xu Xiaobo, Wang Gong Jin, Zhao Wei, et al. Comparison of concurrent estrous methods of recipient goats for embryo transfer [J]. Livestock and poultry industry, 2004 (5): 60- -61. [7] Wangong Jin, Sun Jie, Su Lei, et al. Frozen embryo transfer in Dumor sheep [J]. Jiangsu Journal of Agriculture, 2006,22 (3): 248- -252.