ABSTRACT

Previous studies examining the impact of topical lidocaine spray on postcastration pain behavior in piglets used scan sampling for the collection of behavior data. This methodology led to inconclusive results on the efficacy of topical lidocaine spray for pain relief. This study uses continuous coding to examine the effect of topical lidocaine on piglet behavior post castration. Castrated piglets received either no pain relief or topical lidocaine spray and are compared to gilts that were handled only. Postcastration piglet behavior was continuously coded for postural behaviors, social isolation, as well as nosing and playing. Behaviors in the castrated piglets differed from those that were handled only, but the piglets that received the spray did not exhibit significantly different behaviors from castrated pigs that received no spray. Play, exploratory behavior, and continuous behavioral observations proved to be sensitive modalities for detecting alterations in behavior postcastration and revealed that topical lidocaine spray does not provide effective pain mitigation for piglets undergoing castration and would thus not be recommended as a method for providing postcastration pain relief in piglets.

摘要

以前研究局部利多卡因喷雾对仔猪阉割后疼痛行为的影响使用扫描采样来收集行为数据。这种方法导致关于局部利多卡因喷雾剂缓解疼痛的功效的不确定结果。本研究使用连续编码来检查局部利多卡因对阉割后仔猪行为的影响。去势仔猪未接受止痛药或局部利多卡因喷雾，并与仅接受处理的后备母猪进行比较。阉割后仔猪的行为被连续编码为姿势行为、社会隔离以及嗅探和玩耍。阉割仔猪的行为与仅接受喷洒的仔猪的行为不同，但接受喷洒的仔猪与未接受喷洒的阉割仔猪的行为没有显着差异。玩，