动物营养学报2026，Vol.38Issue(5)：3480-3493,14.DOI:10.12418/CJAN2026.278
有机微量元素对哺乳犊牛生长性能和胃肠道微生物区系的影响
Effects of Organic Trace Elements on Growth Performance and Gastrointestinal Microbial Flora of Suckling Calves
摘要
Abstract
This experiment was conducted to study the effects of adding organic trace elements to starter on growth performance and gastrointestinal microbial flora of suckling calves.A total of 76 healthy Simmental calves with(16±7)days of age and initial body weight of(41.85±6.00)kg were randomly divided into 2 groups with 38 calves in each group,raised in individual pens.The inorganic group was supplemented with 1 g/kg inorganic trace element premix in the starter,while the organic group was supplemented with 1 g/kg organic trace element premix.The addition levels of trace elements in the two groups were consistent:copper 20 mg/kg,iron 400 mg/kg,zinc 120 mg/kg,manganese 90 mg/kg and selenium 0.3 mg/kg.The experi-mental period was 69 days,divided into 2 phases:the first phase was day 1 to day 34,and the second phase was day 35 to day 69.The results showed that compared with the inorganic group,the starter dry matter intake and average daily gain of the organic group were significantly increased in the second phase and overall phase(P＜0.05);the diarrhea rate in the overall phase was decreased by 18.88%;the body height and hip height at day 69 were significantly increased(P＜0.05).Microbial composition analysis revealed that compared with the inorganic group,the relative abundance of Actinobacteriota in rectal microbiota was significantly increased(P＜0.05),while the relative abundance of Spirochaetota was significantly decreased(P＜0.05)in the organic group.The relative abundances of fiber-degrading related genera such as Rikenellaceae_RC9_gut_group and Ruminococcus,as well as probiotic genera such as Olsenella and Bacteroides,were significantly increased(P＜0.05),while the relative abundance of the potential pathogen Treponema was significantly decreased(P＜0.05)in the organic group.In conclusion,compared with inorganic trace elements,adding organic trace ele-ments to the starter can significantly promote the growth of suckling calves,regulate the intestinal microbial structure,and improve intestinal health.[Chinese Journal of Animal Nutrition,2026,38(5):3480-3493]关键词
有机微量元素/生长性能/腹泻率/哺乳期犊牛/胃肠道微生物Key words
organic trace elements/growth performance/diarrhea rate/suckling calves/gastrointestinal mi-crobiota分类
农业科技引用本文复制引用
牛颂,方晶子,徐焕,赵广瑞,张亚伟,徐明..有机微量元素对哺乳犊牛生长性能和胃肠道微生物区系的影响[J].动物营养学报,2026,38(5):3480-3493,14.基金项目
内蒙古自治区教育厅一流学科科研专项(YLXKZX-NND-007-9) （YLXKZX-NND-007-9）
长沙兴嘉科技创新项目(2024-XJ-01) （2024-XJ-01）
