黄芪茎叶提取物对猪生长性能、屠宰性能及肉品质的影响OA

To investigate the effects of adding Astragalus membranaceus stem and leaf extract at different levels on the growth performance,slaughter performance,and meat quality of pigs,200 5-month-old crossbred fattening pigs with a body weight of(90.48±1.5 kg)were randomly divided into 4 groups,with 10 replicates in each group and 5 pigs in each replicate.A feeding trial with Astragalus membranaceus stem and leaf extract supplementation was conducted,with groups designated as 0(control group),0.2%,0.4%,and 0.6%Astragalus membranaceus stem and leaf extract supplementation.The pre-trial lasted for 7 days,and the trial period was 35 days.The results showed that:(1)Compared with the control group,the average daily weight gain was significantly increased(P＜0.05)and the feed-to-gain ratio was significantly lower(P＜0.05)in the 0.4%and 0.6%Astragalus membranaceus stem and leaf extract supplementation groups;(2)Compared with the control group,the carcass weight,carcass oblique length,net meat percentage,and lean meat percentage were significantly increased(P＜0.05)in the 0.4%and 0.6%Astragalus membranaceus stem and leaf extract supplementation groups;(3)Compared with the control group,the protein and moisture content were significantly increased(P＜0.05)in the 0.4%and 0.6%Astragalus membranaceus stem and leaf extract supplementation groups,while the drip loss,shear force,cooking loss,and fat content were significantly reduced(P＜0.05).In summary,adding Astragalus membranaceus stem and leaf extract at different proportions can improve the growth performance,slaughter performance,and meat quality of crossbred fattening pigs,with 0.4%supplementation being more suitable.