Study On Effect Of Lentinus Edodes Polysaccharide On Growth Performance, Immuno Function And Antioxidant Ability In Piglets

This study was conducted to investigate the effect of Lentinus edodes polysaccharide (LEP)on growth performance,immuno function and antioxidant ability in piglets and intended to discuss that whether the LEP can accelerate growth rate and enhance body-resistibility in piglets or not.One hundred and twenty pigs(Landrace×Large White and 11.34±0.62kg and 44±3d age)were randomly allotted to four treatments and each treatment was replicated using five pens containing six pigs per pen and the study lasted 28 days.Groupâ… was control feeding basal diet,and LEP supplemented at 150,300 and 450 mg/kg in groupâ…¡,â…¢,â…£.The results showed that:1)The ADG of pigs between days 0～14 responded to groupâ…¡,â…¢,â…£was increased by 4.92%(P＞0.05),9.43%(P＜0.01),8.00%(P＜0.05)conmpared with control respectively,and the ADG was increased by 6.81%(P＜0.05),4.54%(P＞0.05),5.44%(P＞0.05)between days 14～28 and 5.99%(P＜0.05),6.66%(P＜0.05), 6.55%(P＜0.05)between days 0～28.At the side of ADFI,groupâ…¢,â…£was extremely significantly increased by 3.10%,2.73%conmpared with control and 2.80%,2.43%with groupâ…¡between days 0～14,and the groupâ…¡,â…¢,â…£between days 14～28 was 1.48%(P＞0.05),1.34%(P＞0.05),2.33%(P＜0.05)higher than control;groupâ…¢,â…£was 2.06%(P＜0.01),2.50%(P＜0.01)higher than control between days 0～28,and the groupâ…£was also increased by 1.49%(P＜0.05)compared with groupâ…¡.Only the groupâ…¢was 6.45%(P＜0.05)lower than control between days 0～14,other days and groups were not significantly different.2)The apparent digestibility of pigs in CP responded to groupâ…¡,â…¢,â…£was increased by 3.16%(P＜0.05),2.64%(P＞0.05),0.13%(P＞0.05),and the EE of groupâ…¡,â…¢was 1.53%,1.37%higher than control,and was 1.80%,1.65%higher than groupâ…£,but was not significantly different.3)The ratio of diarrhea of groupâ…¡was 23.08%lower than control and difference was significant;groupâ…¢,â…£was all extremely significantly decreased by 53.85%,and was all 40.00%(P＜0.01)lower than groupâ…¡.4)Serum TP,ALB,GLO of groupâ…¡,â…¢,â…£had a elevated trend and A/G depressed, but neither significant.TP was increased by 3.44%,3.62%,4.21%,and 1.81%,2.54%, 3.59%for ALB,and 5.63%,5.08%,4.99%for GLO,while A/G was decreased by 0.73%, 2.19%,1.46%.SUN of groupâ…¡,â…£was little higher at 2.87%,1.27%than control respectively,groupâ…¢was decreased 0.32%slightly;and GLU of groupâ…¡,â…¢,â…£was increased by 1.05%,0.88%,0.35%,but all was not significant too.5)The GH of groupâ…¡,â…¢,â…£was increased by 7.25%(P＞0.05),11.59%(P＞0.05), 20.29%(P＜0.01),and T₃ was 8.24%(P＞0.05),4.71%(P＞0.05),32.94%(P＜0.01) respectlively;the T₄ of groupâ…¢,â…£was 2.61%,3.18%higher than control and 2.57%, 3.14%higher than groupâ…¡,but not significant;Cor was decreased by 9.93%(P＞0.05), 25.88%(P＜0.01),11.46%(P＞0.05)in groupâ…¡,â…¢,â…£.6)There was nearly not change about IgG in each group,but IgM of groupâ…¢was 5.26%(P＞0.05)higher than control and groupâ…¡,and groupâ…£was 10.53%(P＜0.05);C₄ was not significantly different.7)Plasma MDA was decreased by 13.22%(P＞0.05),23.42%(P＜0.05),31.54%(P＜0.01)in groupâ…¡,â…¢,â…£,and SOD was increased by 4.13%(P＞0.05),13.13%(P＜0.05), 24.69%(P＜0.01),GSH-Px was increased by 5.54%(P＞0.05),10.43%(P＜0.05), 12.13%(P＜0.05)respectively.