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不同硒源对蛋鸡血硒含量及抗氧化能力的影响

DOI: 10.7685/j.issn.1000-2030.2008.02.019, PP. 91-96

Keywords: 富硒酵母,亚硒酸钠,硒含量,抗氧化能力

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Abstract:

采用2×3因子完全随机设计,将富硒酵母(Se-enrichedyeast,SY)和亚硒酸钠(sodiumselenite,SS)分别以3个硒水平0.2、0.5和1.0mg.kg-1添加到基础日粮中,配成6种试验日粮,基础日粮为对照,分别饲喂7组(每组n=100)68周龄的健康罗曼蛋鸡,饲养28d。在试验14d和28d采血样,测定蛋鸡血液的硒含量以及血液中谷胱甘肽过氧化物酶(GSH-Px)活力、超氧化物歧化酶(SOD)活力和总抗氧化能力(T-AOC)。结果表明与对照组相比,添加硒能极显著提高蛋鸡全血硒含量、全血GSH-Px活力和血浆T-AOC,且随着硒添加水平的增加,上述3个指标均显著升高;添加SS的蛋鸡全血硒含量和全血GSH-Px活力分别较添加SY的高20.87%(P<0.01)和14.17%(P<0.01),而血浆T-AOC较添加SY的低11.11%(P<0.05);在试验28d时,添加硒能极显著提高蛋鸡血浆SOD活力。结论硒源和添加水平对蛋鸡血液硒含量、GSH-Px活力和T-AOC均有显著影响;添加SS较添加SY能显著提高蛋鸡血液硒含量和GSH-Px活力,而添加SY较SS能显著提高蛋鸡血浆T-AOC;富硒酵母是蛋鸡较好的硒源。

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