Effects of Dihydromyricetin from Ampelopsisgrossedentataon Visceral Organ Index and Digestive Enzymes Activity of Chickens

To provide a reference basis for reasonable development and utilization of A.grossedentata resource and its application in aquaculture production,0.025%,0.05% and 0.1% dihydromyricetin(DMY)extracted fromA.grossedentata were added into the basal diets of Yaoshan chickens,conducted the test of effect of DMY on 40 day old healthy Yaoshan chickens' visceral organ index and digestive enzymes activity.Results:Supplementation of DMY in basal diets have a certain effect on the visceral organ weight,organ index,the length and digestive enzyme activity of small intestine of chickens.Among them,0.05% DMY is the most appropriate to add.Compare with the control group(without DMY),0.05% DMY can reduce lung weight and index(P0.05),significantly reduce the liver weight(P0.05),very significantly reduce stomach weight and stomach index(P0.01),increase the activity of amylase in small intestine(P0.05),significantly increase the length and activity of protease in small intestine(P0.05).Supplementation of 0.05% DMY can reduce the visceral organ weight and organ index,enhance gastrointestinal digestion and absorption capacity,improve feed utilization rate and promote the growth of chickens.