Dietary selenomethionine increases antioxidant capacity of geese by improving GSH and thioredoxin systems
(Objective)A total of 200 healthy 28-d-old male Jiangnan White geese were used to investigate the free radical scavenging ability,reduced glutathione(GSH)and thioredoxin systems,and the concentrations of reactive oxygen metabolites(ROM),malondialdehyde(MDA)and protein carbonyl(PC)in geese fed diets with organic selenium(Se)(Selenomethionine,SeMet)and inorganic Se(sodium selenite,SS).(Method)All geese were randomly allotted into four groups with five replicates of 10 geese each,and received basal diet supplemented with 0.3 mg Se/kg SS,0.2,0.3 and 0.4 mg Se/kg SeMet until 70 d of age,respectively.(Result)Geese in the SS and SeMet groups exhibited similar growth performance.Diet with SeMet increased the scavenging abilities of 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)diammonium salt free radical(ABTS·+,P<0.001)and superoxide radical(O2-·,P=0.002)in the serum of geese,as well as the scavenging abilities of ABTS·+(P=0.023),hydroxyl radical(P=0.009)and O2-·(P=0.019)in the liver of geese.Compared to the SS group,SeMet increased hepatic GSH concentration(P=0.002),the activities of glutathione peroxidase(P=0.031),γ-glutamate cysteine ligase(P<0.001)and thioredoxin reductase(P<0.001),and decreased the concentrations of ROM,MDA and PC in the serum and liver of geese(P<0.05).(Conclusion)In conclusion,dietary SeMet inclusion would be more effective than SS in increasing the antioxidant capacity of geese,possibly by improving GSH and thioredoxin systems,and 0.2 mg Se/kg SeMet in goose diet is recommended.
selenomethionine goose antioxidant capacity GSH thioredoxin
Wan Xiao-li Ju Geng-Yue Xu Lei Yang Hai-Ming Wang Zhi-Yue
College of Animal Science and Technology,Yangzhou University,Yangzhou,Jiangsu Province,225009,P.R.Ch College of Animal Science and Technology,Yangzhou University,Yangzhou,Jiangsu Province,225009,P.R.Ch
国内会议
江苏扬州
英文
35-49
2019-04-01（万方平台首次上网日期，不代表论文的发表时间）