鸡消化道电活动规律的研究

THE RESEARCH OF LAW OF ELECTRIC ACTIVITY IN CHICKEN DIGESTIVE TRACT

本工作研究了鸡肌胃以上消化道（包括肌胃）的电活动规律。结果表明：肌胃、腺胃禁食时有自发性肌电发放，而不由食道、嗉囊所引发。食道、嗉囊肌电发放与摄食、饮水、排空有关。肌、腺胃在肌电发放时序关系上肌胃领先于腺胃（与解剖构造顺序不同）。由此认为：肌、腺胃肌电自发放由肌胃引发，起着启动的主导作用。肌、腺胃肌电峰电簇频率量呈１：１的关系。摄食、饮水时两者肌电活动增强，停食后活动减弱，这是综合调节机制的结果。９０％的鸡在饱食后腺胃出现阵发性大峰电发放，可能与腺胃向肌胃大量迅速排空有关。禁食后出现腺胃峰电的连续发放（四联率，三联率，二联率），可能与腺胃连续排空有内在联系。肌、腺胃肌电活动频率，随禁食时间的延长而频率下降，我们认为是食物对消化道刺激强度减弱所导致的结果。

This work studied the law of electric activity in chicken digestive tract in frontof gizzard(include gizzard),The results showed that when fasting there was automaticmyoelectricity in gizzard and glandular stomach,but was not from esophagus andingluvies.The myoelectricityof esophagus and ingluvies was related with ingestion。drinking and emptying.The myoelectricity of gizzard is in advance of glandular stomachin regular order which was differ from their anatomic order, Because of this,wesuspected that myoelectricity of gizzard and glandular stomach resulted from gizzard, it played a leading role in starting.The frequecy of spike and wave complex in gizzardand glandular stomach showed 1:1.Electric activity increased in ingestion and drinking,and decreased in stopping ingestion,this was the result of complex regulation mecha-nism.After-full,fed 90%chicken showed spasm big spikes in glandular stomach.It wasin relation to rapid empty from glandular to gizzard.After fasting,there were continuous spikes(tetrageminy,trigemin, bigeminy).These may have relation with continuousempting in glandular stomach.The frequency of electric activity decreased with fastingtime increased,this was due to decreased food stimulation to digestive tract.