Abstract: Abstract: Objective To investigate operating performance and improving growth performance of surgical taildocking and rubber ring tail-docking of piglets． Method Two or four litters of piglets were randomly divided into two experimental groups and one normal control group． At approximately 1—3 days of age， piglets from experimental groups were tail docked using surgical tail-docking or rubber ring tail-docking respectively． All piglets were observed for tissue damage and pre-weaning daily gain． Ｒesult Compared with tail-docked piglets using surgical tail-docking， piglets using rubber ring tail-docking have been found to have fewer tail injuries．Furthermore，the growth performance of tail-docked piglets were increased significantly ( P ＜ 0. 05) compared with normal control． Conclusion Tail docking of piglets using rubber ring was superior to surgical tail-docking in physical damage and operating performance． The growth performance of tail-docked piglets was remarkably improved．

Key words: <p>tail-docking of piglets, rubber ring tail-docking, average daily gain</p>

摘要： 摘要: 仔猪断尾是猪规模化养殖场常用的一项养殖技术，可减少猪的咬尾行为，提高生产性能。目的研究针筒式断尾器和直接剪断法两种断尾技术的操作性能和对生产性能的影响。方法随机选择2 ～ 4 窝仔猪，在仔猪出生后1 ～ 3 d 断尾。试验共分3 组: 一组使用针筒式断尾器断尾，一组使用直接剪断法断尾，一组为对照组，分析断尾后造成的损伤和断奶前平均日增体质量情况。结果针筒式断尾器造成的损伤明显轻于直接剪断法，且断尾后仔猪生长性能明显优于未断尾对照组( P ＜ 0. 05) 。结论针筒式断尾器断尾法在造成的损伤和操作简便性方面明显优于直接剪断法，断尾后仔猪在断奶前生长性能得到明显改善。

关键词: <, p>, 仔猪断尾, 针筒式断尾器, 平均日增体质量<, /p>