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

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)

  • Son, Bong Whan (Northern Branch of Gyeonggi-do Domestic Animal Health Center) ;
  • Kim, Hyo Min (Northern Branch of Gyeonggi-do Domestic Animal Health Center) ;
  • Jung, Heung Whan (Northern Branch of Gyeonggi-do Domestic Animal Health Center) ;
  • Kim, Soo Chang (Northern Branch of Gyeonggi-do Domestic Animal Health Center)
  • 손봉환 (경기도 가축보건소 북부지소) ;
  • 김효민 (경기도 가축보건소 북부지소) ;
  • 정흥환 (경기도 가축보건소 북부지소) ;
  • 김수장 (경기도 가축보건소 북부지소)
  • Published : 1974.05.31

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.

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