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Tail-directed behaviour in pigs – relation to tail posture and tail lesion
Applied Animal Behaviour Science ( IF 2.3 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.applanim.2020.105151
Thore Wilder , Joachim Krieter , Nicole Kemper , Anja Honeck , Kathrin Büttner

Abstract Tail-biting in pigs affects the health and welfare of the animals. Different indicators, such as the tail posture, can be used to detect tail-biting at an early stage. The aim of this study was to investigate the effect of tail-directed behaviour, differentiating between tail-biting and tail-in-mouth behaviour, on tail lesions and tail posture of 6 groups of 24 undocked piglets in identical pens using detailed behavioural observations of the four days (t-1 to t-4) before a tail-biting outbreak. Tail lesions were scored twice a week. The tail posture and the tail-directed behaviour were recorded using video observation. Generalised linear mixed models were used separately for tail-biting and tail-in-mouth behaviour to test the influence of the number of receiving (RT) or performing (PT) tail-directed behaviour on the multinomial tail lesions (0: no tail lesion, 1: superficial tail lesion, 2: small or large tail lesion) and to test the influence of RT and PT and the fixed effects of pen (1-6), day (t-1 to t-4), hour (10:00 h – 17:00 h), location (at the trough, not at the trough) and receiver (received tail-directed behaviour in the previous 20 min, received no tail-directed behaviour in the previous 20 min) on the binary tail posture (0: raised tail posture, 1: lowered tail posture). For the tail-biting behaviour dataset, the results showed that piglets with a higher RT had significantly more severe tail lesions (p

中文翻译:

猪的尾巴导向行为——与尾巴姿势和尾巴损伤的关系

摘要 猪咬尾会影响动物的健康和福利。不同的指标,例如尾巴姿势,可用于早期检测咬尾现象。本研究的目的是研究尾定向行为(区分咬尾行为和含尾行为)对同一圈内 6 组 24 头未断尾仔猪的尾部损伤和尾部姿势的影响,使用详细的行为观察咬尾爆发前的四天(t-1 到 t-4)。每周两次对尾部损伤进行评分。使用视频观察记录尾部姿势和尾部定向行为。分别使用广义线性混合模型进行咬尾和尾在口行为,以测试接收(RT)或执行(PT)尾指向行为对多项尾部病变的影响(0:无尾病变, 1: 表面尾部病变, 2: 小或大的尾部病变) 并测试 RT 和 PT 的影响以及笔 (1-6)、天 (t-1 至 t-4)、小时 (10) 的固定效应:00 h – 17:00 h)、位置(在波谷,不在波谷)和接收器(在前 20 分钟内收到尾指向行为,在前 20 分钟内未收到尾指向行为)在二进制上尾巴姿势(0:抬尾姿势,1:收尾姿势)。对于咬尾行为数据集,结果表明,RT 较高的仔猪尾部损伤明显更严重(p 2:小或大尾部病变)并测试RT和PT的影响以及笔(1-6),天(t-1至t-4),小时(10:00 h – 17:00)的固定效应h)、位置(在波谷,不在波谷)和接收器(在前 20 分钟内接收到尾指向行为,在前 20 分钟内未接收到尾指向行为)在双尾姿态(0:抬起尾巴)姿势,1:低尾姿势)。对于咬尾行为数据集,结果表明,RT 较高的仔猪尾部损伤明显更严重(p 2:小或大尾部病变)并测试RT和PT的影响以及笔(1-6),天(t-1至t-4),小时(10:00 h – 17:00)的固定效应h)、位置(在波谷,不在波谷)和接收器(在前 20 分钟内接收到尾指向行为,在前 20 分钟内未接收到尾指向行为)在双尾姿态(0:抬起尾巴)姿势,1:低尾姿势)。对于咬尾行为数据集,结果表明,RT 较高的仔猪尾部损伤明显更严重(p 在之前的 20 分钟内没有收到任何尾部定向行为)的双尾姿势(0:抬高的尾巴姿势,1:降低的尾巴姿势)。对于咬尾行为数据集,结果表明,RT 较高的仔猪尾部损伤明显更严重(p 在之前的 20 分钟内没有收到任何尾部定向行为)的双尾姿势(0:抬高的尾巴姿势,1:降低的尾巴姿势)。对于咬尾行为数据集,结果表明,RT 较高的仔猪尾部损伤明显更严重(p
更新日期:2020-12-01
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