富硒益生菌对仔猪抗氧化和免疫功能的影响

目的:研究富硒益生菌对仔猪抗氧化能力和免疫功能的影响。方法:选用断奶仔猪24头,随机分为3组。C组为对照组,饲粮中添加玉米淀粉,T1、T2组为试验组,饲料中分别添加富硒益生菌和亚硒酸钠,试验期60d。分别于试验期D30、D60测定血液中GSH-Px与SOD活性、MDA含量、全血硒含量、猪瘟抗体水平以及组织中的硒含量。结果:在60d时,T1、T2组仔猪血液GSH-Px活性、血清SOD活性、血液及组织中的硒含量及血清中的猪瘟抗体水平均显著高于C组,MDA水平显著低于C组。两个试验组中T1组效果优于T2组。结论:富硒益生菌改善仔猪抗氧化能力的效果优于亚硒酸钠,但在增强免疫功能方面两者差异不显著。

EFFECTS OF SELENIUM ENRICHED PROBIOTICS ON ANTIOXIDATIVE ACTIVITIES AND IMMUNE FUNCTIONS IN WEANLING PIGLETS

Objective: To investigate the effects of selenium enriched probiotics on antioxidative activities and immune functions in weanling piglets. Methods: Twenty-four healthy weanling piglets (Duroc×Landrace×Yorkshire ) were divided into 3 groups. One served as control group (C) and two were supplemented different selenium (Se) sources namely selenium enriched probiotics (T1) and Na selenite (T2) as test groups respectively . The experiment lasted for 60 days. The blood GSH-Px activity, blood Se concentration, serum superoxide dismutase (SOD) activity, serum malonaldehyde (MDA) level, serum antibody level of swine fever, and the tissue content of selenium were determined. Results: Blood GSH-Px , Se concentration and serum SOD activity of T1, T2 groups were higher than those of control group after 60 d Se supplementation, and serum MDA content was markedly lower than control group. At the same time, the serum antibody level of swine fever, the tissue content of selenium in T1, T2 group were much higher than control group, and T1 group was higher than T2 group. Conclusion: Organic Se supplementation could significantly enhance immune function and antioxidative activities of weanling piglets.