日粮中添加复合植物精油对肉鸭生长性能、抗氧化能力和盲肠微生物多样性的影响OA

This study investigated the effects of dietary compound plant essential oils on growth performance,serum antioxidant capacity,and cecal microbial diversity of Cherry Valley meat ducks.400 healthy ducks exhibiting similar body weight were randomly divided into 4 groups,each consisting of 5 replicates containing 20 ducks.Group Ⅰ served as the control with a basal diet,while Groups Ⅱ,Ⅲ,and Ⅳ received the basal diet supplemented with 100,150,and 200 mg/kg of essential oils,respectively.The 35-day trial found:1)Groups Ⅱ,Ⅲ,and Ⅳ had significantly higher average daily gain(by 3.81%,3.61%,and 7.28%,respectively)and lower feed-to-gain ratios(by 4.03%,4.44%,and 6.45%,respectively)than GroupⅠ(P＜0.05).2)Groups Ⅱ,Ⅲ,and Ⅳ showed significantly higher serum levels of T-AOC,SOD,and GSH-Px,and lower serum MDA content than Group Ⅰ(P＜0.05).3)Groups Ⅲ and Ⅳ had a significantly higher Chao 1 index of cecal microorganisms,and Groups Ⅱ,Ⅲ,and Ⅳ had a significantly higher relative abundance of Actinobacteriota than Group Ⅰ(P＜0.05).Conclusion:Adding an appropriate amount of compound plant essential oils to the diet can effectively enhance Cherry Valley meat ducks'growth,optimize intestinal flora,and boost antioxidant capacity,with 200 mg/kg being the optimal dose.