Studies on bovine mastitis in Seongwhan area (Korea R.)
1981
Seok, H.B. | Lee, K.W. | Oh, S.Y. (National Livestock Breeding Station, Anyang (Korea R.))
A total of 210 dairy cows were epidemiologically investigated for mastitis by Milk Quality Test (MQT) Method. Milk samples from cows infected with mastitis were also bacteriologically studied. 71(42.5%) of 174 dairy cows were positive for mastitis and 59(79.7%) among them were infected with subclinical mastitis and 15(20.3%) with clinical mastitis. The incidence rate of subclinical mastitis for herd showed tendency to increase at the barn located on a lower place (30.7-7-43.9%), whereas, the barn which was on a higher place and with bucket type milking system showed tendency to decrease causative organisms. A total of 230 strains of etiological agents were isolated from 578 infected duarters which shown MQT score (+) or more. The relevant causative organisms isolated in this study were Staphylococcus aureus (18.3%) Staphylococcus epidermidis (16.9%), fungi (16.5%), Pseudomonas aeruginosa (15.2%), E. coli (7.8%) and Serratia marcescens (2.2%), respectively.
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