Isolation and Identification of Bacterial Pathogens in Cows with Mastitis

The isolation and identification of pathogens from 50 milk samples of cows with mastitis in the area of Xi'an were conducted.The results showed that total number of detection for bacteria was 122,and 17 isolates were identified.The detection number for Staphylococcus was 47,with a detection rate of 38.53%;The detection number for Streptococcus was 22,with a detection rate of 18.04%;The detection number for Escherichia coli was 15,with a detection rate of 12.30%;The total detection rate for Staphylococcus,Streptococcus and Escherichia coli was 68.87%.The main pathogen causing the cow mastitis was Staphylococcus aureus,and the most infections were caused by 2-3 bacteria,the mixed infection rate was upto 78%.