ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (10): 1584-1591.doi: 10.11843/j.issn.0366-6964.2014.10.002

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Advance of Early Pregnancy Diagnosis Technology in Dairy Cows

ZUO Hai-yang1,2,CHEN Xiao-li1,CAI Yong1,HAO Hai-sheng1,QIN Tong1,ZHAO Xue-ming1,LU Yong-qiang3*,WANG Dong1*   

  1. (1.The Key Laboratory for Farm Animal Genetic and Utilization of Ministry of Agriculture of China,Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193,China;2.College of Animal Science and Technology,Jilin Agricultural University,Changchun 130118,China;3.Animal Husbandry Station of Beijing,Beijing 100107,China)
  • Received:2014-01-22 Online:2014-10-23 Published:2014-10-23

Abstract:

A simple and effective technique of early pregnancy diagnosis could help to pick out nonpregnant cows in time and re-inseminate as early as possible,thereby lead to the improvement of reproductive efficiency,which was the basic requirement of efficient livestock breeding management and reproductive performance improvement.For this reason,pregnancy diagnoses were explored and many early pregnancy diagnoses had been established: the clinical diagnostics methods such as rectal palpation and ultrasonography,immunologic diagnosis such as progesterone and early pregnancy factor detection,and other methods such as serum acid titration and coulter thrombocytometry.We analyzed and compared all these methods from the technical difficulty,complexity,cost,and accuracy.These analysis results showed that with the development of the technology,the dairy industry were becoming large-scale and intensive,and the existing pregnancy diagnoses were not adapt to the situation of industrial development.The combination of information and sensor technology had become an inevitable trend.It was necessary to extensively studied the physiological characteristics of cows in estrus for the combination of technique and industry,and the fine degree of breeding management would be greatly improved.

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