Relationships between tail biting in pigs and disease lesions and condemnations at slaughter
Relationships between tail biting in pigs and disease lesions and condemnations at slaughter
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DOI：
10.1136/vr.160.5.149
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发表时间：
2007-02-03
影响因子：
2.2
通讯作者：
Morrison, R. B.
中科院分区：
文献类型：
--
作者：
Kritas, S. K.;Morrison, R. B.
两个匹配的病例对照研究进行了一个屠宰场的能力为780头猪每小时，每项研究使用约7000头猪屠宰的一天。在第一项研究中，在被咬或尾巴完整的猪中记录了咬尾和肺炎的严重程度。在第二项研究中，记录了尾部被咬或完整的猪的尾部评分、性别、胸膜炎、外部可见肿胀和修剪情况。在研究1中，咬尾评分与受地方性肺炎典型病变影响的肺组织百分比之间没有显著相关性，但咬尾严重程度与肺部脓肿和/或胸膜炎病变的患病率之间存在显著相关性（P < 0-0001）。在研究2中，咬尾的严重程度与外部尸体腐烂和尸体修剪的发生率之间存在显著的相关性，阉割的雄性尸体咬尾的发生率高于雌性尸体（P < 0. 05）。05）。
Two matched case-control studies were performed at an abattoir with a capacity of 780 pigs per hour, each study using the approximately 7000 pigs slaughtered on one day. in the first study, the severity of tail biting and pneumonia were recorded in pigs with bitten or intact tails. In the second study, the tail score, sex, and the presence of pleuritis, externally visible abscesses and trimming were recorded in pigs with bitten or intact tails. In study 1, there was no significant association between the tail score and the percentage of lung tissue affected by lesions typical of enzootic pneumonia, but there was a significant association between the severity of tail biting and the prevalence of lungs with abscesses and/or pleuritic lesions (P < 0-0001). In study 2, there were significant associations between the severity of tail biting, and the prevalence of external carcase abscesses and carcase trimming; the carcases of castrated males had evidence of tail biting more frequently than the carcases of females (P < 0(.)05).