Rectifying cow infertility under heat stress by immunization against inhibin and supplementation of progesterone

文献类型： 外文期刊

第一作者： Chen, F.

作者： Chen, F.;Guo, R.;Guo, B.;Shi, Z.;Lu, J.;Li, W.;Mei, C.;Tsigkou, A.;Lu, J.

作者机构：

关键词： Immunization against inhibin; Conception rate; Hormone; Ovary; Holstein cow

期刊名称：DOMESTIC ANIMAL ENDOCRINOLOGY （ 影响因子：2.566； 五年影响因子：2.388 ）

ISSN： 0739-7240

年卷期： 2022 年 80 卷

页码：

收录情况： SCI

摘要： This study was undertaken for the development of novel techniques that are based on immunoneutralization of inhibin bioactivity to improve Holstein cow fertility. A series of 4 experiments were carried out on 2 farms that were located in subtropical or temperate regions, to test the effects of immunization against inhibin alpha subunit on cow fertility under varying degrees of heat stress conditions. Though immunization against inhibin alone improved conception rate (CR) after TAI moderately in cows under mild heat stress conditions, the treatment plus progesterone supplementation substantially enhanced CR in the range of 25 to 35 percentages from severe heat stress to comfortable weather conditions. There existed an additive effect between immunization against inhibin and progesterone supplementation that maximally enhanced CR. Further, immunization against inhibin increased both FSH and activin A concentrations in blood during both follicular and luteal phases. It also significantly increased blood concentrations of E2 in the follicular phase but decreased P4 concentrations during the early pregnancy. However, interferon -tau concentrations in blood around the time of pregnancy recognition were doubled in the inhibin immunized cows. In conclusion, immunization against inhibin plus P4 treatment enhances ovarian follicle and the subsequent early embryo developments that help to greatly improve the fertility of Holstein dairy cows. (c) 2022 Elsevier Inc. All rights reserved.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序