Korean Journal of Veterinary Research (대한수의학회지)

The Korean Society of Veterinary Science (대한수의학회)
권호 표지

The Safety of Brucella abortus strain RB51 in pregnant cattle

부루세라 RB51 백신의 임신소에 대한 안전성

  • Kim, Jong-man (National Veterinary Research and Quarantine Service) ;
  • Woo, Sung-ryong (National Veterinary Research and Quarantine Service) ;
  • Lee, Ji-youn (National Veterinary Research and Quarantine Service) ;
  • Jung, Suk-chan (National Veterinary Research and Quarantine Service) ;
  • Jean, Young-hwa (National Veterinary Research and Quarantine Service) ;
  • Kim, Jae-hoon (National Veterinary Research and Quarantine Service) ;
  • Kweon, Chang-hee (National Veterinary Research and Quarantine Service) ;
  • Yoon, Young-dhuk (National Veterinary Research and Quarantine Service) ;
  • Yoo, Han-sang (College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University)
  • Accepted : 2003.11.28
  • Published : 2003.12.25
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Abstract

The safety of Brucella abortus strain RB51(SRB51) was investigated in dairy cows and Korean native cattle of 4~7th month of gestation. From experimentally inoculated cattle, 18 of 25 (72.0%) dairy cows, and 3 of 10 (30.0%) Korean native cattle were aborted or delivered premature fetus. There were no significant differences in the incidence of abortion depending on the inoculation route (intramuscular and subcutaneous) and dosages ($1{\times}10^9$, $2.8{\times}10^9$, and $4.0{\times}10^9$ CFU). The antibodies to the SRB51 were measured by a dot blot enzyme-linked immunosorbent assay. The highest titers to SRB51 were detected between 5~7 weeks after inoculation and the specitic antibody could be detected up to 28 weeks after inoculation. The SRB51 was isolated from amnio-allantoic fluid, bronchial lymph node, mammary gland, and supramammary lymph node in 5 of 25 dairy cows during 4 weeks after either abortion or delivery. Although SRB51 was isolated from 4 of 24 aborted fetus or normally delivered calves at parturition time, it was not isolated during 4 weeks afterward. Eleven of twentyfive dairy cows showed the endometritis and/or necrosis until 6 weeks after delivery, no lesions were seen at 8 weeks after delivery and uterus from control dairy cows. The results of present study revealed that SRB51 might induce the clinical signs of brucellosis in the pregnant cattle at 4~7th month of gestation.

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References

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