Serratia marcescens mastitis in a dairy herd
Wilson, D.J.; Kirk, J.H.; Walker, R.D.; Bosworth, Q.W.
Journal of the American Veterinary Medical Association 196(7): 1102-1105
1990
ISSN/ISBN: 0003-1488 PMID: 2184155 Document Number: 350092
Serratia marcescens caused clinical mastitis in 5 cows and nonclinical mastitis in 21 cows of a 190-cow herd. Repeated bacteriologic culture of specimens from the cows, postmilking teat dip, environment, and equipment was performed. Serratia marcescens was not isolated from the dip, environment, or equipment. Progress of the infection in cows was monitored for 10 months. Some cows remained infected with S. marcescens for at least 10 months. Economic loss estimates were based on Dairy Herd Improvement Association linear score reports. The average nonclinical loss was about $22/cow.