Korean Journal of Veterinary Research 1981;21(2):161-165.
Studies on Bovine Mastitis in Seongwhan Area 1. Epidemiological Investigation
Ho Bong Seok, Kwang Won Lee, Seong Yong Oh
National Livestock Breeding Station
성환지역(成歡地域)의 유우유방염(乳牛乳房炎)에 관한 연구(硏究) 1. 유방염(乳房炎)의 발생실태(發生實態)와 그 원인균(原因菌) 조사(調査)
석호봉, 이광원, 오성룡
국립종축장
Abstract
A total of 210 dairy cows of Seongwhan area were epidemiologically investigated for mastitis by Milk Quality Test(MQT) method. Milk samples from cows infected with mastitis were also bacteriologically studied. Seventy four (42.5%) of 174 dairy cows were positive for mastitis and fifty nine (79.7%) among them were infected with subclinical mastitis and fifteen (20.3%) were clinical mastitis. High infective rate were shown on August (48.7%) and July (45.7%) and it was lowered on December (35.8%). The incidence rate of subclinical mastitis for herd shown tendency of increase at the barn in which located on lower place (30.7~43.9%), whereas, the barn in which was on higher place and with bucket type milking system shown tendency of 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%), Escherichia coli (7.8%) and Serratia marcescens (2.27), respectively.


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