To evaluate effects of tail docking and/or teeth clipping on sows and their piglets, a total of 24 sows and their 302 piglets at 3 days of age were randomly allocated to one of four treatments: teeth clipping and tail docking (TCTD), teeth clipping (TC), tail docking (TD), or intact teeth and tail (Intact). Behavior of piglets and sows, lesions on the body and tail of piglets and sows' teats were inspected. Heart rates of processed piglets were increased (p < .01) during the procedures. Teeth clipping decreased body surface temperature (p < .01) of piglets during and after the procedures but tail docking did not (p > .01). Processed piglets spent more (p < .05) time lying alone and playing/fighting than sham-processed piglets. Tail docked piglets spent less (p < .01) time standing than tail sham-docked piglets. Intact teeth increased (p < .05) the avoidance behaviors of sows. Teeth clipping decreased (p < .05) the lesion scores on the anterior, middle, and posterior teats. Taken together, piglet teeth clipping had more impact on sows and their piglets than tail docking did in the lactation period based on our findings.

中文翻译：

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尾巴对接和/或剪牙对母猪及其仔猪的行为，病变和生理指标的影响。

为了评估尾巴对接和/或剪牙对母猪及其仔猪的影响，将总共24头母猪及其302只3天大的仔猪随机分配到以下四种治疗方法之一：剪牙和尾巴对接（TCTD），牙齿修剪（TC），尾部对接（TD）或完整的牙齿和尾巴（完整）。检查仔猪和母猪的行为，仔猪的身体和尾巴上的病变以及母猪的乳头。在手术过程中，加工后的仔猪的心率增加（p <.01）。在手术过程中和手术结束后，剪齿会降低仔猪的体表温度（p <.01），而尾巴对接则没有（p> .01）。经过加工的仔猪比经过深加工的仔猪要花费更多的时间（p <.05）独自一人玩耍/打架。尾部停靠的仔猪站立时间比尾部假停靠的仔猪少（p <.01）。完整的牙齿增加了母猪的回避行为（p <.05）。剪牙减少了前，中和后乳头的病变评分（p <.05）。综上所述，根据我们的发现，在哺乳期，剪断仔猪的牙齿对母猪及其仔猪的影响要大于对接尾巴对母猪和仔猪的影响。