Abstract:

Abstract：To understand disease status on cow mastitis in Henan province , taken on-site diagnostic and reagents testing and so on investigative methods, Investigation of disease status on cow mastitis five areas of Henan Province east, west, south, north, and Zhengzhou City in 2009 of April , August and December, Investigated a total of 87 dairy farms and 21,315 dairy cattle lactation. The results show that, the overall incidence of cow mastitis in Henan Province was 70.66%,the average rate of clinical mastitis incidence was 7.18%,and subclinical mastitis was 63.48%, ratio of clinical mastitis and subclinical Mastitis is 1: 8.84; Zhengzhou region has the highest rate of mastitis, was 74.13 %; Henan cow mastitis the highest incidence in August , was 82.25%;More than 4 fetal cow mastitis prevalence was significantly higher than 1 to 2 fetal cow prevalence (P <0.05)；Lactating cows in different stages of clinical mastitis and the incidence of subclinical mastitis significantly different (P <0.05). the incidence of clinical mastitis and subclinical mastitis in different stages of lactating ,significantly different (P <0.05). The results suggest that; Henan cow mastitis incidence is high, different management levels, season, parity, and different lactation stages with incidence are closely related.