Epidemiological studies on Mycoplasma mastitis of dairy cows in South Korea

국내 사육 유우군의 마이코플라스마균 유방감염에 관한 연구

  • Han, Hong-ryul (College of Veterinary Medicine, Seoul National University) ;
  • Hwang, Cheol-yong (College of Veterinary Medicine, Seoul National University) ;
  • Sohn, Dae-ho (College of Veterinary Medicine, Seoul National University) ;
  • Kim, Mi-kyung (College of Veterinary Medicine, Seoul National University) ;
  • Ryu, Jong-hyun (College of Veterinary Medicine, Seoul National University) ;
  • Pak, Son-il (College of Veterinary Medicine, Seoul National University) ;
  • Oh, Tae-ho (College of Veterinary Medicine, Kyungpook National University)
  • 한홍율 (서울대학교 수의과대학) ;
  • 황철용 (서울대학교 수의과대학) ;
  • 손대호 (서울대학교 수의과대학) ;
  • 김미경 (서울대학교 수의과대학) ;
  • 유종현 (서울대학교 수의과대학) ;
  • 박선일 (서울대학교 수의과대학) ;
  • 오태호 (경북대학교 수의과대학)
  • Received : 2000.07.27
  • Published : 2000.09.25

Abstract

This study was performed to investigate Mycoplasma (M) spp. infection status of dairy cow in South Korea. Among 8,485 bulk tank milk collected from dairy farms of the 5 areas, 26 samples (0.30%) were positive for Mycoplasma by direct culture method. The isolation rates of Mycoplasma spp. according to the areas were 0.51% in Kyonggi, 0.16% in Cholla, 0.23% in Gyoungsang, 0.12% in Chungchong, and 0.08% in Kangwon. In the species identification test by indirect immunoperoxidase test, 16 out of 26 isolates were identified as M bovis (61.53%), M bovigenitalium (23.07%), M californicum (7.69%), M alkalescens and Acholeplasma laidlawii (3.84%), respectively. The isolation rate of Mycoplasma spp. from 208 quarter milk samples in culling cows due to severe clinical mastitis was 3.0%. These Mycoplasma spp. were identified as M bovis (62.0%), M bovigenitalium (12.0%), M californicaum (12.0%), and M alkalescens (12.0%). This study shows that the bovine mammary gland infected by Mycoplasma spp. is present in some dairy farms and the routine culture test of bulk tank milk samples for Mycoplasma is needed for a high quality milk promotion services.

Acknowledgement

Supported by : 한국학술진흥재단