摘要
Abstract
This experiment was conducted to investigate the effects of glycine nanoselenium supplementation on antioxidant capacity and selenium content in serum,tissue and organs of finishing pigs.One hundred and sixty DLY crossbred pigs with an average body weight about 70 kg were randomly allocated into 4 groups with 4 replicates per group and 10 pigs per replicate.The pigs in control group fed a basal diet,which those in experimental groups fed experimental diets which added 0.1,0.3 and 0.5 mg/kg (in selenium) glycine nanoselenium into the basal diet,respectively.The preliminary period lasted for 5 days and the formal period lasted for 60 days.The results showed as follows:1) the activity of glutathion peroxidase in liver,kidney,pancreas and heart of pigs in 0.1 mg/kg group was significantly higher than that in control group (P＜0.05),as well as the total antioxidant capacity and superoxide dismutase activity in serum (P＜0.05).2) Compared with the control group,adding 0.3 and 0.5 mg/kg glycine nanoselenium into diet significantly increased the activity of glutathion peroxidase in serum,muscle,liver,kidney,pancreas and heart of pigs (P＜0.01),whereas significantly declined the content of malondialdehyde in serum,muscle,liver,kidney,pancreas and heart of pigs (P ＜ 0.01).Furthermore,the activity of superoxide dismutase and catalase in liver of pigs in 0.3 mg/kg group was significantly increased (P＜0.01),and total antioxidant capacity and superoxide dismutase activity in pancreas and heart of pigs in 0.5 mg/kg group was significantly increased compared with the control group (P＜0.01).3) The selenium content in serum,muscle,liver,kidney,pancreas and heart of pigs in 0.1,0.3 and 0.5 mg/kg groups was significantly increased compared with the control group (P＜0.01).It is indicated that glycine nanoselenium supplementation can improve the antioxidant capacity and selenium content in serum,tissue and organs of finishing pigs,and the optimal supplemental level of glycine nanoselenium is 0.5 mg/kg.关键词
肥育猪/甘氨酸纳米硒/抗氧化能力/谷胱甘肽过氧化物酶Key words
finishing pigs/glycine nanoselenium/antioxidant capacity/glutathion peroxidase分类
农业科技
