动物营养学报2026，Vol.38Issue(5)：3374-3386,13.DOI:10.12418/CJAN2026.270
桑叶提取物对817肉鸡生长性能、抗氧化能力和盲肠微生物群落的影响
Effects of Mulberry Leaf Extract on Growth Performance,Antioxidant Capacity and Cecal Microbial Community of 817 Broilers
摘要
Abstract
This experiment was aimed to investigate the effects of dietary supplementation with different levels of mulberry leaf extract(MLE)on growth performance,antioxidant capacity,intestinal morphology and cecal microbial community of 817 broilers.A total of 120 one-day-old healthy male 817 broilers with similar initial body weight[(39.45±1.35)g]were randomly allocated into 4 groups with 5 replicates per group and 6 birds per replicate.The control group(CON)was fed a basal diet,while the other three groups were fed the basal diet supplemented with 0.4%,0.8%or 1.2%MLE,respectively.The experiment lasted for 42 days.The re-sults showed as follows:1)compared with the CON group,average daily feed intake(ADFI)of broilers in the 0.4%MLE and 0.8%MLE groups was significantly decreased(P＜0.05),while dressing percentage was significantly increased(P＜0.05);breast muscle percentage in the 0.8%MLE group was significantly in-creased(P＜0.05),and liver index in the 0.4%MLE group was significantly decreased(P＜0.05).2)Com-pared with the CON group,serum malondialdehyde(MDA)content in the 0.4%MLE,0.8%MLE and 1.2%MLE groups was significantly decreased(P＜0.05);serum glutathione peroxidase(GSH-Px)activity in the 0.8%MLE group was significantly higher than that in the other three groups(P＜0.05).3)Compared with the CON group,jejunal villus height and villus height to crypt depth ratio(V/C)in the 0.4%MLE group were significantly increased(P＜0.05);jejunal crypt depth in the 0.8%MLE and 1.2%MLE groups was increased.4)Cecal microbial community analysis showed that,at the phylum level,Firmicutes and Bacteroidota were the dominant phyla in the cecum of broilers.Compared with the CON group,the relative abundance of Firmicutes was increased in the MLE groups.At the genus level,the relative abundances of Subdoligranulum and Para-bacteroides in the MLE groups were increased.In conclusion,MLE can improve the growth performance of 817 broilers by improving jejunal morphology,enhancing antioxidant capacity and modulating cecal microbial community structure,with the 0.8%being the optimal supplementation level.[Chinese Journal of Animal Nu-trition,2026,38(5):3374-3386]关键词
桑叶提取物/肉鸡/生长性能/抗氧化能力/盲肠微生物群落Key words
mulberry leaf extract/broilers/growth performance/antioxidant capacity/cecal microbial com-munity分类
农业科技引用本文复制引用
陈嘉林,程旭,李杨,于永宏,张伟伟,袁焕青,王学静,王晓丹..桑叶提取物对817肉鸡生长性能、抗氧化能力和盲肠微生物群落的影响[J].动物营养学报,2026,38(5):3374-3386,13.基金项目
"十四五"国家重点研发计划资助课题(2022YFD1801104) （2022YFD1801104）
河北省现代农业产业技术体系创新团队建设专项(HBCT2024110202) （HBCT2024110202）
国家现代农业产业技术体系(CARS-41) （CARS-41）
河北省现代农业产业技术体系(HBCT202427020204) （HBCT202427020204）
