母牛安静发情鉴定技术概况及影响因素分析

doi:10.11843/j.issn.0366-6964.2021.04.002

Abstract

Abstract: Although cows in silent estrus don’t show overt estrus behaviors, the normal follicular development and ovulation process can also be detected. The cows in silent estrus often miss the best opportunity for artificial insemination since no ideal oestrous identification method, which leads to a longer calving interval and the increase of feeding cost. Therefore, the identification method and the possible causes of silent estrus in cows were reviewed. It was pointed out that scientific management and reasonable nutrition could decrease the occurrence of silent estrus in cows. In addition, the estrus markers in feces, urine and milk should be given an deep study to understand the various physiological changes during the oestrous cycle, combining these physiological parameters and the internet, bioinformatics and other technologies, which will enable us to develop more accurate and efficient estrus detection technology, and thoroughly overcome the technical bottleneck of silent estrus identification.

Key words: silent estrus, estrus detection, follicular development, cow

CLC Number:

S814.1

ZHOU Zhengyi, TIAN Li, TIAN Hongzhi, LI Ruyi, DUAN Chenying, OBIANWUNA Uchechukwu Edna, Lü Lihua, WANG Dong. Analysis of Identification Technology and Influence Factors on Silent Estrus of Cows[J]. Acta Veterinaria et Zootechnica Sinica, 2021, 52(4): 862-871.

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Analysis of Identification Technology and Influence Factors on Silent Estrus of Cows

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