Survey of Bovine Mastitis in Gyeonggi Province I. Epidemiological Investigations of Etiological Agents

Son, Bong Whan; Kim, Hyo Min; Jung, Heung Whan; Kim, Soo Chang

Korean Journal of Veterinary Research 1974;14(1):99-105.

Bong Whan Son, Hyo Min Kim, Heung Whan Jung, Soo Chang Kim

Northern Branch of Gyeonggi-do Domestic Animal Health Center

경기도지역(京畿道地域)의 유우유방염(乳牛乳房炎)에 관(關)한 조사(調査) I 유방염(乳房炎)의 역학적(疫學的) 조사(調査)

손봉환, 김효민, 정흥환, 김수장

경기도 가축보건소 북부지소

Abstract

A total of 2,053 quarter milk samples of 518 dairy cows from 46 herds were examined for mastitis and results obtained were as follows: 1. A total of 428 quarters(20.8%) of 271 dairy cows(52.3%) from 41 herds(89%) were found to be infected with mastitis. 2. It was found that 71 quarters(3.5%) of 41 cows(7.9%) from 21 herds(45.6%) were clinical mastitis and 357 quarters(17.3%) of 230 cows(44.4%) from 20 herds (43.4%) were subclinical mastitis. 3. The main causative organisms of the mastitis were Staphylococcus aureus(26%), Streptococcus uberis(16%), and Streptococcus agalactiae(10%). 4. The majority of causative organisms were very resistant to colistin(85.9%), penicillin(67%), and streptomycin(39%). Most of the other drugs were highly effective as inhibitor for the most causative organisms in vitro. However sulfisoxazole was moderatively effective against them.