摘要
Abstract
[Objective]This study investigated the effects of a compound probiotic preparation on milk production performance,rumen fermentation status,and serum metabolic parameters in dairy cows,aiming to provide a theoretical basis for improving production efficiency and health management.[Method]Sixty dairy cows with similar parity,milk yield,and body condition were randomly divided into four groups:a control group(Group A),a low-dose group(Group B),a medium-dose group(Group C),and a high-dose group(Group D).Group A received the basal diet,while Groups B,C,and D received the basal diet supplemented with 4 g/d,8 g/d,and 16 g/d of the compound probiotic preparation,respectively.The trial lasted 42 days,during which milk yield,milk quality,rumen fermentation status,and serum parameters were monitored and analyzed.[Results]Cows in the medium-dose(C)and high-dose(D)groups showed significantly increased milk yield and improved milk quality.Rumen fermentation health was effectively improved.Serum glucose levels were regulated,and both Total Antioxidant Capacity(T-AOC)and Superoxide Dismutase(SOD)activity increased significantly.[Conclusion]The compound probiotic preparation significantly enhanced milk production performance,improved rumen fermentation status,and regulated metabolic health in dairy cows,demonstrating promising application potential.关键词
益生菌/产奶量/瘤胃/发酵Key words
probiotic/milk yield/rumen/fermentation
