Effects of Diseases on Reproductive Performance in Dairy Cattle Ⅰ: Current Situation and Its Mechanism |
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| Authors: | ZHAO Shanjiang HAO Haisheng LIU Yunxiang WANG Xianjun XU Li LI Laibao WANG Huan ZHU Huabin |
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| Institution: | 1. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;2. Zhongdi Dairy Corporation, Beijing 100028, China;3. Xuzhou Leyuan Animal Husbandry Co., Ltd., Xuzhou 221721, China |
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| Abstract: | Over the past 20 years,with the continuous promotion of the genetic improvement plan of dairy cow population and the continuous improvement of feeding technology,the intensive level and milk yield of dairy cow population in China are continuously improving.However,the reproduction data over the years showed that the more milk yield,the more obviously decline in reproductive performance,and the more prominent of the reproductive problems.The decline of fertility caused by high yield has become the bottleneck of the development of dairy industry in China and even in the world.In dairy farming,there are many factors that cause the reduction of reproductive performance of high-yield dairy cows,including genetic factors,environmental factors and disease factors.Recently,the influence of disease factors on reproductive performance of dairy cows has become more and more prominent.According to the location of the disease,the diseases can be divided into genital diseases and non-genital diseases.This paper discussed the relevant research data on the effects of different diseases on the reproductive performance of dairy cows in recent years,and focusing on the analysis of the molecular mechanism of diseases affecting the reproductive performance of dairy cows through the nervous system,reproductive endocrine system and humoral immune system.The prospect and thinking for the future research of diseases and reproductive performance of high-yield dairy cows were put forward to provide reference and theoretical basis for improving the reproductive efficiency and economic benefits of high-yield dairy cows in China. |
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| Keywords: | dairy cattle diseases reproductive performance effect mechanisms |
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