Effects of compound probiotics on growth performance,intestinal microbiota,and economic efficiency of fattening cattle
This study examined the impacts of multi-strain probiotics on growth,gut microbes,and economics in fattening cattle. It involved 100 healthy Simmental crossbred cattle divided into a control(basal diet)and three experimental groups(basal+200,400,600 mg/kg probiotics). Each group had 5 replicates of 5 cattle. The pre-test was 14 days,and the trial was 60 days. Results showed:Probiotics(200,400,600 mg/kg)increased daily gain and lowered feed-to-gain ratio(P<0.05),but didn't affect feed intake(P>0.05).Gut microbiota analysis found probiotics reduced E. coli and increased Lactobacillus,with higher doses being more effective(P<0.05);Salmonella counts were similar(P>0.05).Probiotics improved farming economics(P<0.05),especially the 400 mg/kg dose(P<0.05).Overall,the best results were with 400 mg/kg of multi-strain probiotics.