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用低硒地区施硒肥（Ｎａ＿２ＳｅＯ＿３）粮饲料（Ｓｅ０．１００ｍｇ／ｋｇ）和硒含量相近的补硒（Ｎａ＿２ＳｅＯ＿３）粮饲料（Ｓｅ０．０９９ｍｇ／ｋｇ）分别喂养大鼠８周，观察不同化学形态硒对动物肝Ｔ＿４５′－脱单碘酶（ＩＤ－Ｉ）活力、肝硒含量及血谷胱甘肽过氧化物酶（ＧＳＨ－ｐｘ）活大的影响。结果表明，硒肥粮组与补硒粮组相比较，肝ＩＤ－Ｉ活性明显高（Ｐ＜０．０１），肝硒含量亦高，但没有显著意义，而血ＧＳＨ－ｐｘ活力却略低；各指标的硒肥／补硒两组之比值为肝ＩＤ－Ｉ活力１．８２、肝硒含量１．２５、血ＧＳＨ－ｐｘ活力０．８３。证明施硒肥粮中结合态硒（硒蛋氨酸）较无机硒－Ｎａ＿２ＳｅＯ＿３更有利于肝ＩＤ－Ｉ的合成
The rats were fed with selenium (Na_2SeO_3) grain feed (Se0.100mg / kg) and selenium (Na_2SeO_3) grain feed (Se0.099mg / kg) in low selenium area for 8 weeks respectively. The effects of different chemical forms of selenium On the activity of liver T_45’-deaminase (ID-I), hepatic and selenium content and glutathione peroxidase (GSH-px) activity in rats. The results showed that the liver ID-I activity was significantly higher (P <0.01) and hepatic and selenium contents were higher in selenium-fat diet group compared with the selenium-supplemented food group, but it was not significant, while the blood GSH-px activity was slightly lower ; The selenium / selenium ratio of each index was 1.82 for liver ID-I activity, 1.25 for hepatic and selenium content, and 0.83 for GSH-px activity. It was proved that the combined selenium (selenomethionine) in the selenium-enriched grain was more favorable to the synthesis of liver ID-I than the inorganic selenium-Na2SeO 3