Acta Veterinaria et Zootechnica Sinica ›› 2022, Vol. 53 ›› Issue (7): 2047-2056.doi: 10.11843/j.issn.0366-6964.2022.07.002

• REVIEW • Previous Articles     Next Articles

Research Progress of Early Pregnancy Diagnosis in Dairy Cows

WEI Shihao, DAI Tianshu, WANG Feng, SHI Yuangang, MA Yun, DAN Xingang*   

  1. School of Agriculture, Ningxia University, Yinchuan 750021, China
  • Received:2021-10-14 Online:2022-07-23 Published:2022-07-23

Abstract: High reproductive rate is an important guarantee for enhancing the economic benefits of dairy farms, and early pregnancy diagnosis is one of the important means in improving the reproductive rate of dairy cows. It is difficult for traditional pregnancy diagnosis methods to determine the pregnancy status of dairy cows within 21 days after mating. However, the new pregnancy diagnosis technologies developed in recent years can effectively diagnose early pregnancy in dairy cows. In this paper, color Doppler ultrasound, mid-infrared spectroscopy technology, and pregnancy-related protein, circulating nucleotides, interferon tau-induced gene detection and other technologies about the latest diagnosis techniques of early pregnancy in dairy cows were reviewed. Meanwhile, the practical application effects, the advantages and disadvantages of these technologies were compared. And the new diagnostic techniques for early pregnancy were predicted in dairy cows, which would provide some ideas and references for exploitation and application of advanced and high-efficiency early pregnancy diagnosis techniques in dairy cows.

Key words: cow, diagnosis of early pregnancy, pregnancy associated protein, infrared spectrum, circulating nucleic acid

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