Impact of porcine epidemic diarrhea on performance of growing pigs.
Impact of porcine epidemic diarrhea on performance of growing pigs.
复制标题
DOI：
10.1371/journal.pone.0120532
复制
发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Perez A
中科院分区：
文献类型：
--
作者：
Alvarez J;Sarradell J;Morrison R;Perez A
猪流行性腹泻病毒（PEDv）感染对美国猪肉行业的影响主要归因于它对哺乳仔猪造成的死亡，因此，在量化其对母猪养殖场的影响方面投入了大量精力。然而，没有关于在仔猪时期暴露于PEDv的存活猪的生产性能的信息。本研究采用2013年5月至2014年6月感染猪流行性腹泻病毒（PEDv）的母猪养殖场的断奶仔猪生产记录，通过死亡率、平均日增重（ADG）、平均日采食量（ADFI）和饲料系数（FCR），对猪流行性腹泻病毒（PEDv）感染对生长猪性能的影响进行了回顾性队列研究。将PEDv爆发后在感染流中断奶的第一批生猪（“感染批次”）的生产记录与之前14至120天内断奶的生猪（“控制批次”）的生产记录进行比较。来自受感染批次和控制批次的性能记录按流量配对，使用非参数配对测试进行比较。与pedv阴性批次（对照组）相比，pedv阳性批次（感染批次）的死亡率、平均日增重和平均食重比显著不同，死亡率和平均食重比分别平均增加11%和0.5，平均日增重减少0.16 lb/d。我们的研究结果表明，与之前14-120天内断奶的生长猪相比，PEDv爆发后断奶的生长猪的生产性能较差，这表明PEDv除了会导致乳猪死亡外，还会损害存活猪的生产性能。这些发现有助于量化PEDv感染在美国的影响，并最终有助于量化疾病预防和控制措施的成本效益。
The impact of porcine epidemic diarrhea virus (PEDv) infection on the US pork industry has mainly been attributed to the mortality that it causes in suckling piglets, and, consequently, much effort has been invested in the quantification of its effect in sow farms. However, no information on the performance of surviving pigs that were exposed to the PEDv as piglets is available. Here, a retrospective cohort study to evaluate the impact of porcine epidemic diarrhea virus (PEDv) infection on growing pigs’ performance, as indicated by mortality, average daily gain (ADG), average daily feed intake (ADFI), and feed conversion ratio (FCR) was performed using production records from weaned pigs in nursery and wean-to-finish sites from sow farms that became PEDv-infected between May 2013 and June 2014. Production records from the first batch of growing pigs weaned in infected flows after the PEDv outbreak (“infected batches”) were compared with those from pigs weaned within the previous 14 to 120 days (“control batches”). Performance records from infected and control batches, paired by flow, were compared using non-parametric paired tests. Mortality, ADG and FCR were significantly different in PEDv-positive (infected) compared with PEDv-negative (control) batches, with a mean increase of mortality and FCR of 11% and 0.5, respectively, and a decrease of ADG of 0.16 lb/day. Our results demonstrate a poorer performance of growing pigs weaned after a PEDv outbreak compared with those weaned within the previous 14-120 days, suggesting that in addition to the mortality induced by PEDv in suckling pigs, the disease also impairs the performance of surviving pig. These findings help to quantify the impact of PEDv infection in the US and, ultimately, contribute to efforts to quantify the cost-effectiveness of disease prevention and control measures.
影响因子：
1.5
作者：
Stevenson, Gregory W.;Hoang, Hai;Yoon, Kyoungjin J.
通讯作者：
Yoon, Kyoungjin J.
影响因子：
2.6
作者：
Losinger, WC;Bush, EJ;Corso, BA
通讯作者：
Corso, BA