Effect of duodenal leucine infusion on pancreatic exocrine function of dairy cow

摘要

Introduction Small intestine is the main organ to digest starch and its starch utilization efficiency is 42％ higher than by rumen.As a substrate for protein synthesis,leucineis also a nutrient signal to regulate protein synthesis.Studies showed that leucine supplement decreased the activity and mRNA expression of α-amylase in rats (Hashimoto et al.,2004),but could stimulate the secretion of pancreatic α-amylase (Yu et al.,2011).This study evaluated the effects of duodenal leucine infusion on pancreatic exocrine function of dairy cow.