徐业芬 王震 牛家强等

摘要[目的]通过对西藏林芝地区藏猪的心电图测定和分析，探索其心电图特征，为兽医临床诊断提供资料。[方法]利用数字单道心电图仪，分别描记和分析了西藏林芝地区46头藏猪的Ⅰ、Ⅱ、Ⅲ标准导联，aVR、aVL、aVF单极加压肢体导联和V1、V2、V3、V4、V5和V6单极胸导联的心电图。[结果]西藏林芝地区藏猪心率为（124.49±44.06）次/min，心电图均为窦性心律，但窦性心律不齐发生率为39.13%；QRS心电轴范围为-80°至186°，其中左偏、右偏发生率分别为19.6%；各波形和波向在不同导联一致性较好，各波的间期时间分别为：P波（37.17±7.85）ms、P-R间期（83.62±13.15）ms、QRS间期（50.86±8.13）ms、Q-T间期（226.23±19.12）ms、Q-Tc间期（225.47±31.23）ms，但各波和间期时间在成年和幼年间及公猪和母猪间均无显著差异（P>0.05）。[结论]心率较快、心律不齐和心电轴偏离发生率较高是西藏藏猪正常心电图的特征。

关键词西藏；藏猪；心电图

中图分类号S852文献标识码A文章编号0517-6611（2016）04-143-04

Analysis of Electrocardiogram for Tibetan Pigs in Linzhi Area of Tibet

XU Yefen，WANG Zhen，NIU Jiaqiang，QIANGBA Yangzong* et al （Agricultural and Animal Husbandry College，Tibet University，Linzhi，Tibet 860000）

Abstract[Objective] The determination and analysis of electrocardiogram for Tibetan pigs was used to explore the electrocardiogram characteristics and offer datum to veterinary clinics.[Method] Fortysix Tibetan pig electrocardiograms in Linzhi area，Tibet were traced using I，Ⅱ and Ⅲ standard leads and aVR，aVL and aVF unipolar extremity leads and V1，V2，V3，V4，V5 and V6 precordial leads.[Result] The result showed that the heart rate was （124.49±44.06）times /min，and the heart rhythm was sinus rhythm in all pigs in Linzhi area，but the frequency of the sinus arrhythmia was 39.13%.The QRS cardiac electrical axis range was from-80° to 186°，and the frequency of right or left deviation was 19.6%， respectively.The form and direction of each wave in different lead was uniform and the duration of each wave and interval showed that P duration was （37.17 ±7.85） ms，PR interval was （83.62±13.15） ms，QRS interval was （50.86±8.13） ms； QT interval was （226.23±19.12） ms and QTc interval was （225.47 ±31.23） ms，and there was no significant difference between adult and juvenile or between sows and boars in duration of each wave and interval（P>0.05）.[Conclusion] It is suggested that higher heart rate，higher frequencies of the sinus arrhythmia and cardiac electrical axis deviation were the major characteristics of Tibetan pig′s normal electrocardiogram in Tibet.

Key wordsTibet； Tibetan pig； Electrocardiogram

西藏平均海拔在4 000 m以上，空气稀薄，气压低，含氧量少，太阳辐射强，日照时间长，独特的地理环境造就了独特的物种。藏猪是典型的高原型猪种，具有适应高海拔恶劣气候环境、抗病、耐粗饲等特点[1]。近年来，对藏猪的各种高原适应性研究也成为相关学者关注的热点。心脏生理功能对于高原适应性尤为重要，而心电图是衡量心脏功能的重要指标之一。余琛琳等[2]通过对从西藏引进至广州的西藏小型猪完全清醒状态下的心电图描记与分析研究，发现西藏小型猪心电图特征与人心电图和贵州小型猪心电图很相似。但是，目前在西藏特殊氣候条件下对藏猪心电图的研究则鲜见报道。基于……