不同硒源对蛋鸡组织硒含量及其抗氧化能力的影响

his experiment was conducted to compare the effects of Selenium-enriched probiotics(SP) and Sodium selenite(SS) on selenium contents and the antioxidant capacity of hen tissues. Both Se sources were added into basal diet at 0.2, 0.5 and 1.0 mg/kg of Se to make six kind experiment diets. At the same time, probiotics was added into basal diet to make the probiotics control, and basal diet served as the blank control. Eight hundred healthy Rohman laying hens were randomly and equably allocated into eight groups and were investigated for 28 days. At the end of the experiment, hens were slaughtered, and liver, kidney and cardiac muscle were sampled for Se content and GSH-Px, CAT, and SOD activity and T-AOC value assay.The results showed that supplemental Se significantly increase Se contents and the activity of GSH-Px, CAT and SOD and T-AOC value in liver, kidney and cardiac muscle of hens. With supplemental Se level increase, Se contents and the activity of GSH-Px in liver, kidney and cardiac muscle all were significantly increased. Supplemental SP had more ability than SS to increase Se content in liver and cardiac muscle, and to increase the activity of GSH-Px and CAT in liver, kidney and cardiac muscle and the activity of SOD and T-AOC value in kidney.It was concluded that supplementation of Se can increase Se contents and the antioxidant capacity of hen tissues. Especially, advocating to supplement SP at a lower or medium Se level, 0.2 mg/kg or 0.5 mg/kg.