BPEX Pig Health Scheme: a useful monitoring system for respiratory disease control in pig farms?
BPEX Pig Health Scheme: a useful monitoring system for respiratory disease control in pig farms?
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DOI：
10.1186/1746-6148-7-82
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发表时间：
2011-12-30
影响因子：
2.6
通讯作者：
Wieland, Barbara
中科院分区：
文献类型：
--
作者：
Holt, Hannah R.;Alarcon, Pablo;Wieland, Barbara
背景：呼吸道疾病是英国养猪业的重大经济损失。屠宰时猪肺中指示呼吸道疾病的病变。G.肺炎和胸膜炎经常被记录下来，以评估畜群健康或为流行病学研究提供数据。BPEX猪健康计划（BPHS）是一个监测系统，它通知生产商屠宰时猪胴体的肉眼病变，使农场一级的决定。这项研究的目的是评估是否由BPHS提供的信息有关呼吸道病变与呼吸道病原体在农场，农场管理实践和each other.Results：BPHS报告获得了一个子集的70个猪场参与的横断面研究，在2008-09年调查断奶后多系统衰竭综合征的流行病学。将这些报告与牛群中存在/不存在几种病原体的数据以及呼吸道疾病的潜在农场级风险因素相结合。对BPHS报告进行的主成分分析（PCA）产生了三个主成分，解释了总方差的71%。地方性肺炎评分、重度胸膜炎和急性胸膜肺炎的主成分负荷最高，解释了总方差的最大百分比（35%）（BPHS成分1），认为该成分可识别急性疾病农场。使用因子负荷，获得每个农场BPHS组件1的得分。随着农场BPHS组分1评分的增加，屠宰时平均胴体重下降。此外，农场H1 N2和猪生殖与呼吸道疾病病毒（PRRSV）呈阳性更有可能有较高水平的严重和轻度胸膜炎的BPHS报告，foreign.Conclusions：研究发现胸膜炎水平之间的统计关联记录BPHS在屠宰和存在H1 N2和猪繁殖与呼吸道病毒在牛群。也有一些证据表明，农场提交的猪与这些病变可能会降低生产力。然而，需要更多的研究来充分验证该方案。
Background: Respiratory diseases account for significant economic losses to the UK pig industry. Lesions indicative of respiratory disease in pig lungs at slaughter e. g. pneumonia and pleuritis are frequently recorded to assess herd health or provide data for epidemiological studies. The BPEX Pig Health Scheme (BPHS) is a monitoring system, which informs producers of gross lesions in their pigs' carcasses at slaughter, enabling farm-level decisions to be made. The aim of the study was to assess whether information provided by the BPHS regarding respiratory lesions was associated with respiratory pathogens in the farm, farm management practices and each other.Results: BPHS reports were obtained from a subset of 70 pig farms involved in a cross-sectional study conducted in 2008-09 investigating the epidemiology of post-weaning multi-systemic wasting syndrome. The reports were combined with data regarding the presence/absence of several pathogens in the herd and potential farm-level risk factors for respiratory disease. Principal component analysis (PCA) performed on BPHS reports generated three principal components, explaining 71% of the total variance. Enzootic pneumonia score, severe pleurisy and acute pleuropneumonia had the highest loadings for the principal component which explained the largest percentage of the total variance (35%) (BPHS component 1), it was thought that this component identifies farms with acute disease. Using the factor loadings a score for each farm for BPHS component 1 was obtained. As farms' score for BPHS component 1 increased, average carcass weight at slaughter decreased. In addition, farms positive for H1N2 and porcine reproductive and respiratory disease virus (PRRSV) were more likely to have higher levels of severe and mild pleurisy reported by the BPHS, respectively.Conclusions: The study found statistical associations between levels of pleurisy recorded by BPHS at slaughter and the presence H1N2 and PRRSV in the herd. There is also some evidence that farms which submit pigs with these lesions may have reduced productivity. However, more research is needed to fully validate the scheme.