动物营养学报2025，Vol.37Issue(3)：1645-1659,15.DOI:10.12418/CJAN2025.140
饲粮净能水平对育肥猪生长性能、胴体品质、肠道形态及微生物群落和肝脏代谢的影响
Effects of Dietary Net Energy Levels on Growth Performance,Carcass Quality,Intestinal Morphology,Microbial Community and Liver Metabolism of Finishing Pigs
摘要
Abstract
This experiment was conducted to investigate the effects of different dietary net energy levels on growth performance,carcass quality,intestinal morphology,microbial community and liver metabolism of fin-ishing pigs.A total of 84 healthy Duroc×Landrace×Yorkshire crossbred finishing pigs with an average body weight of(53.69±5.99)kg were randomly divided into high-net energy(HNE)group(10.36 MJ/kg),me-dium-net energy(MNE)group(9.90 MJ/kg),and low-net energy(LNE)group(9.44 MJ/kg),respec-tively.Each treatment group had 7 replicates of 4 pigs per replicate.The experiment lasted for 63 days,which were divided into three phases as days 1 to 21,days 22 to 42 and days 43 to 63.The results showed as fol-lows:1)there were no significant differences in growth performance,carcass quality and intestinal morpholo-gy among the three groups(P＞0.05).2)There were no significant differences in ACE,Chao1,Simpson and Shannon indices between the three groups(P＞0.05).The linear discriminant analysis effect size(LEfSe)a-nalysis showed that the relative abundance of Lachnospiraceae_UCG_010 and Megamonas was significantly in-creased in colonic microbial community of MNE group compared with HNE group and LNE group(P＜0.05);the relative abundance of Coprococcus was significantly increased in cecal microbial community of MNE group(P＜0.05).The relative abundance of Lachnospira,Prevotella_7,Coprococcus and Eubacterium_eligens_group significantly increased in colonic microbial community of LNE group compared with HNE group and LNE group(P＜0.05),while the relative abundance of Oscillospira,Colidextribacter and Alphaproteobacteria in cecal microbial community significantly increased(P＜0.05).Compared with HNE group,482 and 849 me-tabolites were up-regulated(VIP＞1 and P＜0.05),while 585 and 938 metabolites were down-regulated(VIP＞1 and P＜0.05)in MNE group and LNE group,respectively.Compared with the HNE group,the MNE and LNE groups had significantly increased metabolites associated with lipids and lipid-like molecules(P＜0.05).Meanwhile,some important energy metabolism related metabolic pathways were changed in the MNE or LNE groups(P＜0.05),such as oxidative phosphorylation,inositol phosphate metabolism,pantothenate and CoA biosynthesis,amino sugar and nucleotide sugar metabolism,and propanoate metabolism.4)The results of Spearman correlation analysis showed that the relative abundance of Megamonas and Coprococcus were posi-tively correlated with 3-hydroxykynurenine content,the intermediate product of tryptophan metabolism in MNE group(P＜0.05);the relative abundance of Prevotella_7 and Coprococcus were positively correlated with 3-hydroxykynurenine,the intermediate product of tryptophan metabolism in LNE group(P＜0.05).In conclu-sion,in the range of dietary net energy level(9.44 to 10.36 MJ/kg)in this experiment,reducing net energy level of diet don't affect the growth performance,carcass quality and intestinal morphology of finishing pigs,but increase energy utilization efficiency.[Chinese Journal of Animal Nutrition,2025,37(3):1645-1659]关键词
育肥猪/净能/生长性能/肠道形态/微生物群落/肝脏代谢Key words
finishing pigs/net energy/growth performance/intestinal morphology/microbial community/liver metabolism分类
农业科技引用本文复制引用
蒋静雅,吴登科,任格晗,刘宁,刘兴琳,王悦,郎育杰,褚瑰燕,蔡传江..饲粮净能水平对育肥猪生长性能、胴体品质、肠道形态及微生物群落和肝脏代谢的影响[J].动物营养学报,2025,37(3):1645-1659,15.基金项目
国家重点研发计划项目(2022YFD1300501) （2022YFD1300501）
