摘要
To provide a reference basis for reasonable development and utilization of Ampelopsis grossedentata resource and its application in production,we added 0.025%,0.05% and 0.1% dihydromyricetin（DMY）extracted from A.grossedentata into the basal diets of Yaoshan chickens,and studied the effects of DMY on visceral organ indexes and digestive enzyme activities of 40-day-old healthy Yaoshan chickens.Supplementation of DMY in basal diets influenced visceral organ weight,organ index,length and digestive enzyme activity of small intestine of chickens.Among them,0.05% DMY was the most appropriate volume for supplementation.Compared with control group（without DMY）,0.05% DMY reduced lung weight and index（P〉0.05）,significantly reduced liver weight（P〈0.05）,extremely reduced stomach weight and stomach index（P〈0.01）,increased activity of amylase in small intestine（P〉0.05）,significantly increased length of small intestine and activity of protease（P〈0.05）.Supplementation of 0.05% DMY reduced the visceral organ weight and organ index,enhanced digestion and absorption ability of gastrointestinal tract,thereby improving feed utilization rate and promoting the growth of chickens.
To provide a reference basis for reasonable development and utilization of Ampelopsis grossedentata resource and its application in production,we added 0.025%,0.05% and 0.1% dihydromyricetin（DMY）extracted from A.grossedentata into the basal diets of Yaoshan chickens,and studied the effects of DMY on visceral organ indexes and digestive enzyme activities of 40-day-old healthy Yaoshan chickens.Supplementation of DMY in basal diets influenced visceral organ weight,organ index,length and digestive enzyme activity of small intestine of chickens.Among them,0.05% DMY was the most appropriate volume for supplementation.Compared with control group（without DMY）,0.05% DMY reduced lung weight and index（P〉0.05）,significantly reduced liver weight（P〈0.05）,extremely reduced stomach weight and stomach index（P〈0.01）,increased activity of amylase in small intestine（P〉0.05）,significantly increased length of small intestine and activity of protease（P〈0.05）.Supplementation of 0.05% DMY reduced the visceral organ weight and organ index,enhanced digestion and absorption ability of gastrointestinal tract,thereby improving feed utilization rate and promoting the growth of chickens.
