激光生物学报2024，Vol.33Issue(6)：530-540,11.DOI:10.3969/j.issn.1007-7146.2024.06.007
海带提取物对奶牛泌乳性能、抗氧化能力、免疫力、瘤胃发酵及瘤胃微生物的影响
Effects of Laminaria japonica Extract Supplementation on Lactation Performance,Antioxidant Status,Immunity,Rumen Fermentation,and Rumen Microbiota in Dairy Cows
摘要
Abstract
The present study aimed to evaluate the effect of Laminaria japonica extract(LJE)supplementation on lactation performance,plasma biochemistry,immunity,antioxidant status,rumen fermentation parameters and rumen microbiota of dairy cows.The experiment was conducted in a one-way completely randomized design.32 healthy lactating Holstein dairy cows with similar body weight,milk yield,parity and days in milk were selected and randomly assigned to 2 groups of 16 cows each.The cows in the control group(CON group)fed with a basal diet,and the other group(LJE group)received the CON diet supplemented with LJE at 30 g per cow per day.The entire trial includes a 12-day adaptation and a 30-day trial period.Compared with the CON group,the diet supplemented with LJE increased dry matter intake(DMI),milk yield,and milk protein content of dairy cows,whereas it had no significant effects on milk fat,lactose,somatic cell counts,and total solids,and it had no significant effects on the plasma biochemical indices.Moreover,the LJE group had significantly higher levels of immunoglobulin A(IgA),immunoglobulin G(IgG),and immunoglobulin M(IgM)in plasma,and had lower malondialdehyde content than those of the CON group.The total volatile fatty acid level increased in the rumen of dairy cows.The LJE diet increased the relative abundance of the phylum Firmicutes and the genera Succiniclasticum,Sphaerochaeta,Mucispirillum,and Akkermansia.In conclusion,adding LJE in feed can enhance the immunity of dairy cows,and reduce the level of lipid peroxidation in dairy cows,and improve the DMI,milk yield,and milk quality,which is of great significance to realize the healthy breeding of dairy cows.关键词
海带提取物/泌乳性能/免疫力/瘤胃发酵参数/瘤胃微生物Key words
Laminaria japonica extract/milk performance/immunity/rumen fermentation/rumen microbiota分类
农业科技引用本文复制引用
彭锦芬,刘勇,谭支良,周传社..海带提取物对奶牛泌乳性能、抗氧化能力、免疫力、瘤胃发酵及瘤胃微生物的影响[J].激光生物学报,2024,33(6):530-540,11.基金项目
国家自然科学基金国际合作与交流项目(32261143467) （32261143467）
国家重点研发计划项目(2023YFD1301705) （2023YFD1301705）
中国科学院战略性先导科技专项项目(XDA26040306). （XDA26040306）
