Waldmann V, Otto K H, Bollwahn W
Klinik für kleine Klauentiere und forensische Medizin, Tierärztlichen Hochschule, Hannover.
Dtsch Tierarztl Wochenschr. 1994 Mar;101(3):105-9.
Electroencephalographic (EEG) recordings performed in piglets during Trapanal anaesthesia showed distinct changes in bioelectrical brain activity in some piglets when castration was carried out. Only an additional extradural anaesthesia seemed to interrupt the transmission of peripheral pain stimuli to the central nervous system. Based on the protocol used EEG did not reveal a marked response to noxious stimulation. Castration of piglets up to two weeks of age were performed during general anaesthesia with Trapanal or Disoprivan or local anaesthesia with Hostacain or without any anaesthesia. The different modes of anaesthesia have had no effects to postoperative wound healing and weight gain between groups as well as between males and females within single groups. With regard to insufficient analgesia and/or partially extreme secondary effects the application of investigated anaesthetic methods on the occasion of castration of piglets is not justifiable at present. Castration in piglets up to an age of two month without anaesthesia is allowed by the animal protection law. However, due to improved wound healing and decreased response to surgical stimulus we suggest to perform castration during the first 10 days after delivery.
在使用曲马多麻醉的仔猪身上进行的脑电图（EEG）记录显示，在实施去势手术时，部分仔猪的脑生物电活动出现明显变化。似乎只有额外的硬膜外麻醉才能中断外周疼痛刺激向中枢神经系统的传导。根据所使用的方案，脑电图未显示对有害刺激有明显反应。对两周龄以下的仔猪实施去势手术时，采用曲马多或丙泊酚进行全身麻醉，或采用氯普鲁卡因进行局部麻醉，或不使用任何麻醉。不同的麻醉方式对各组之间以及单组内雄性和雌性之间的术后伤口愈合和体重增加均无影响。鉴于镇痛不足和/或部分极端的副作用，目前在仔猪去势时应用所研究的麻醉方法是不合理的。动物保护法允许在不麻醉的情况下对两个月龄以下的仔猪进行去势。然而，由于伤口愈合改善以及对手术刺激的反应降低，我们建议在分娩后的头10天内进行去势。
