Effects of Astragalus membranaceus stem and leaf extract on growth performance,nutrient apparent digestibility,and immune indicators in piglets
To investigate the effects of adding different levels of Huangqi stem and leaf extracts on the growth performance,nutrient apparent digestibility,and immune function of weaned piglets.Choose a healthy weight of(25±0.5)kg for the experiment"Du×long×large"120 three way hybrid piglets were randomly divided into 4 groups,with 3 replicates in each group and 10 pigs in each replicates group"Du×long×large"three way hybrid piglets were fed with 0(group 1),1.0%(group 2),1.5%(group 3),and 2.0%(group 4)Huangqi stem and leaf extracts in the basic diet.The preliminary experiment was conducted for 10 days,and the entire experimental period was 56 days.The results showed that:(1)The average daily gain of Group 3 and Group 4 was significantly increased by 11.6%and 10.1%(P＜0.05)compared to Group 1,respectively,and their material weight was significantly reduced by 9.4%and 7.0%(P＜0.05)compared to Group 1;(2)The apparent digestibility of crude protein,crude fat,and crude fiber in feces of groups 3 and 4 was significantly increased by 10.9%,10.8%,10.8%,11.2%,16.5%,and 15.9%compared to group 1,respectively(P＜0.05);(3)The levels of IgA,IgG,and IL-2 in the serum of groups 3 and 4 were 10.8%,11.7%,12.0%,13.7%,22.9%,and 25.1%higher than those of group 1,respectively(P-α Compared with group 1,the content decreased by 20.8%and 22.1%respectively(P＜0.05).In summary,the addition of 1.5%Huangqi stem and leaf extract can improve the"Du×long×large"the growth performance,nutrient apparent digestibility,and immune function of large binary hybrid piglets.
huangqi stem and leaf extractpigletsgrowth performanceapparent nutrient digestibilityimmune
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