神经因素和多种胃肠道激素以及某些药物均可影响其运动功能。
Neural factors and hormones and some drugs play important roles in the control of so motility.
目前，该病的发病机制尚未明了，研究表明胃肠道激素分泌紊乱是重要的病因之一。
Research shows that the disturbance of hormones may be one of the main causes.
鲜味剂提高仔猪采食量的主要途径是通过刺激其味觉，从而促进口腔和胃肠道中的激素等分泌，以增加其对饲料的采食。
Umami enhancer improves feed intake of piglets mainly by stimulating their gustation, then promotes oral cavity and secretes hormones in the gastrointestinal tract to increase their feed intake.
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