Mastitis in Slaughtered Dairy Cows 1. Udder Infection

도태유우(淘汰乳牛)에 있어서의 유방염(乳房炎)에 관(關)한 연구(硏究) 제(第)1보(報) 유방감염(乳房感染)

  • Published : 1980.10.25


The udders of 28 culled dairy cows were removed at slaughter and bacteria isolated. Isolations of major known mammary pathogens comparised Staphylococcus sp. (40.7%), non-identified Gram's negative rods (33.2%) and E. coli (7.4%). In the mixed infection, Staphylococcus sp. was most frequently involved. Drug sensitivity tests were performed on several bacterial species by disc method. These tests indicated that the microorganisms isolated from clinical mastitis of dairy cows were more resistant to antimicrobial agents than the organisrms isolated from milk samples.