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대메뉴안내: 농수식품
농림성과 수산성과 식품성과 인터뷰
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정지운(Jiwoon Jeong)
서울대학교 수의과대학
조회143  주소복사  소셜네트워크로 공유하기
Evaluation of the effect of a porcine reproductive and respiratory syndrome (PRRS) modified-live virus vaccine on sow reproductive performance in endemic PRRS farms

Jiwoon Jeong1, Seeun Kim1, Kee Hwan Park, Ikjae Kang, Su-Jin Park, Changhoon Park, Chanhee Chae*

Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea

1
Both authors contributed equally to this work.

*Corresponding author : Chanhee Chae

Abstract
The efficacy of a porcine reproductive and respiratory syndrome (PRRS) modified-live virus vaccine in reproductive performance was evaluated under field conditions. Three PRRS endemic farms were selected based on their history of PRRS-associated reproductive failures. On each farm, a total of 40 sows were randomly allocated to either vaccinated (n = 20) or unvaccinated (n = 20) groups. Sows were vaccinated six weeks prior to breeding. Clinical data showed a significant improvement in reproductive performance in vaccinated sows. Sows in the vaccinated groups had a significantly (P < 0.05) reduced number of stillborn piglets in all 3 farms. Sows in the vaccinated groups also had a significantly (P < 0.05) higher number of live-born piglets in one of the farms. Sows in the vaccinated groups had a significantly (P < 0.05) higher number of weaned piglets in two of the farms. Premature farrowing, one of the late gestation symptoms of PRRS, was also reduced due to vaccination as suggested by the increase in gestation length and the reduction in the number of stillborn piglets. No adverse systemic or local side effects relative to vaccination were observed during the entire gestation. No vaccine strain was detected in the vaccinated sows from all three farms at 70 and 114 days post vaccination and in live-born piglets at the time of farrowing. Vaccination of sows with this PRRS vaccine was effective in improving reproductive performance in endemic PRRS farms.

Keywords : Porcine reproductive and respiratory syndrome virus; Reproductive performance; Sow; Vaccine

논문정보
- 형식: Research article
- 게재일: 2017년 07월 (BRIC 등록일 2017-07-26)
- 연구진: 국내연구진 태극기
- 분야: Microbiology, Veterinary_Science
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