The early pregnancy diagnose was experienced by 3% and 5% CuSO4 respectively in 57 cows, then checked up their accuracy through rectum-check. The result showed that the total accuracy rate of used by 3% CuSO4 was 87.14%, the group used by 5% CuSO4 was 84.80%. But the accuracy rate in the tow groups was best with milk sample check in 31~50 days after breeding, the average value was 90.35%; the negative accuracy rate by 5%fell comparing to 3%, the none-pregnancy rate was increased because diagnose by mistake. It is indicated that the early pregnancy diagnose was done better with 3% CuSO4 and the method was feasible, the milk sample of 31~50 days after breeding at noon was best to be diagnose the cow early pregnancy in practice.
Li Qingwang, Hu Jianhong, Wang Liqiang, Li Yongpeng, Liu Yongkui, Zan Linsen
. Study on the Cow Early Pregnancy Diagnose by CuSO4[J]. Chinese Agricultural Science Bulletin, 2004
, 20(6)
: 1
-1
.
DOI: 10.11924/j.issn.1000-6850.040601
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