Effects of porcine reproductive and respiratory syndrome vaccination in breeding-age animals

被引：12

作者：

Dewey, CE ^{[1
]}

Wilson, S ^{[1
]}

Buck, P ^{[1
]}

Leyenaar, JK ^{[1
]}

机构：

[1] Univ Guelph, Ontario Vet Coll, Dept Populat Med, Guelph, ON N1G 2W1, Canada

来源：

PREVENTIVE VETERINARY MEDICINE | 2004年 / 62卷 / 04期

关键词：

porcine reproductive and respiratory syndrome (PRRS); reproductive performance; vaccine;

D O I：

10.1016/j.prevetmed.2003.11.007

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

Little is known about the safety and efficacy of extra-label use of the modified live porcine reproductive-and-respiratory syndrome (PRRS) virus vaccine in gestating sows. Our purpose was to determine the impact of vaccination on reproductive performance in 54 herds in Ontario, Manitoba (Canada) and the mid-western United States that were PRRS-positive, PRRS-negative, or concurrently affected by an outbreak of PRRS when initially vaccinated. Majority-vaccinated herds vaccinated greater than or equal to50% but <100% of sows at one time, and limit-vaccinated herds vaccinated <50% of sows at one time. Most majority-vaccinated herds did not vaccinate sows in late gestation, and none vaccinated during the initial PRRS outbreak. Numbers of pigs born alive and weaned decreased when pregnant sows were vaccinated. The effect of vaccination on productivity in the gestation following vaccination depended on the vaccination protocol. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：299 / 307

页数：9

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