饲料工业2026，Vol.47Issue(5)：59-65,7.DOI:10.13302/j.cnki.fi.2026.05.009
酵母发酵饲料对奶牛生产性能、血浆生化、免疫性能及抗氧化指标的影响
Effects of Yeast Fermented Feed on Production Performance,Plasma Biochemical,Immune Function and Antioxidant Indices of Dairy Cows
摘要
Abstract
This experiment was conducted to investigate the effects of yeast fermented feed on production performance,plasma biochemical parameters,immune function and antioxidant capacity of mid-lactating dairy cows.A total of 48 healthy second-parity Holstein dairy cows with the same days in milk[(143±6)d]and milk yield[(35.13±0.61)kg/d]were randomly divided into control group and experimental group with equal number of individuals.Cows in the control group were fed a basal diet,while those in the experimental group were supplemented with 1.5 kg/(head·d)of yeast fermented feed on the basis of the basal diet.The pre-test period lasted for 7 days,and the formal test period was 45 days.The results showed that compared with the control group:① there was no significant difference in feed intake of the experi-mental group(P>0.05);the apparent digestibility of neutral detergent fiber(NDF)and acid detergent fiber(ADF)was extremely significantly increased(P<0.01);while the apparent digestibility of dry matter,crude protein and crude fat showed no significant differences(P>0.05).② The milk yield of the experimental group was significantly increased(P<0.05),the milk somatic cell count was significantly decreased(P<0.05),and the yields of lactose,milk fat and milk protein were extremely significantly increased(P<0.01).③ No significant differences were observed in the contents of plasma glucose,total pro-tein,albumin,alanine aminotransferase,aspartate aminotransferase and urea nitrogen in the experimental group(P>0.05),whereas the contents of plasma total cholesterol and triglycerides were extremely signifi-cantly decreased(P<0.01).④ The contents of plasma immunoglobulin G,immunoglobulin M,total antioxi-dant capacity and superoxide dismutase in the experimental group were significantly increased(P<0.05),the content of plasma malondialdehyde was significantly decreased(P<0.05),while the contents of immunoglobu-lin A and glutathione peroxidase showed no significant differences(P>0.05).In conclusion,supplementation of 1.5 kg/(head·d)yeast fermented feed in the diet of mid-lactating dairy cows can improve their production performance,reduce plasma lipid levels,and enhance the immune and antioxidant capacity of the body.关键词
奶牛/酵母发酵饲料/生产性能/血浆生化指标/免疫性能Key words
dairy cows/yeast fermented feed/production performance/plasma biochemical indices/immu-nity function分类
农业科技引用本文复制引用
刘兆福,陈晓东,杨靖,刘杰,刘伟..酵母发酵饲料对奶牛生产性能、血浆生化、免疫性能及抗氧化指标的影响[J].饲料工业,2026,47(5):59-65,7.基金项目
宁夏回族自治区重点研发计划项目[2021BEF02020] （）
