饲粮中添加盐穗木对绵羊育肥性能及肠道菌群结构的影响OA

The experiment aimed to investigate the effects of dietary addition levels of Halostachys caspica on the fattening performance and intestinal microbiota structure in sheep.A total of 30 lambs with similar health status and body weight were randomly divided into three groups,with five replicates per group and two lambs per replicate.The control group was fed a basal diet,while experimental groups 1 and 2 were fed the basal diet supplemented with 10%and 20%Halostachys caspica,respectively.The pre-test period lasted 20 days,and the formal test period lasted 40 days.The results showed that the average daily gain of experimental groups 1 and 2 was significantly higher than that of the control group(P<0.05),while the feed-to-gain ratio was significantly lower than that of the control group(P<0.05).Intestinal microbiota analysis revealed that Halostachys caspica increased the relative abundance of beneficial bacteria such as Xylanibacter ruminicola and Bacteroides xylanisolvens in the rumen,while decreasing the relative abundance of harmful bacteria.The study shows that supplementing the basal diet of sheep with 10%Halostachys caspica can improve fattening performance and optimize intestinal microbiota structure,with continuous feeding for 30 days being the preferable supplementation regimen.