产蛋母鸡血浆肝及蛋铁硒含量的研究

DIETARY Fe AND Se LEVEL AS RELATED TO Fe AND Se CONTENTS IN THE PLASMA LIVER AND EGG OF LAYING HENS

将 2 78日龄罗曼蛋鸡随机分成 3组 ,以含 2 5mgFe ,含 0 .2mgSe/kg日粮 (对照组 ) ,5 2 5mgFe,1.2mgSe/kg日粮(试验Ⅰ组 ) ,10 2 5mgFe,2 .2mgSe/kg日粮 (试验Ⅱ组 )饲喂 8周 ,结果表明 ,与对照组比较 ,试验组血浆铁硒含量、蛋黄铁硒含量、蛋白硒含量、肝铁硒含量均有大幅度提高。相关性检验表明 ,日粮铁与血浆铁、蛋黄铁 ,血浆铁与蛋黄铁 ,日粮硒与血浆硒、蛋黄硒及蛋白硒 ,血浆硒与蛋黄硒及蛋白硒 ,均呈强正相关 ,P <0 .0 1。这些结果提示 ,通过高铁高日粮可以大幅度提高蛋中铁硒含量 。

Thirty 278-day-old laying hens were randomly divided into 3 groups and fed diets containing 0.2 mg Se/kg and 25 mg Fe/kg (control group), 1.2 mg Se/kg and 525 mg Fe/kg (Treatment I) and 2.2 mg Se/kg and 1 025 mg Fe/kg (Treatment II). Determination made at the end of the experiment, which lasted for 8 weeks, showed that compared with the control group, Fe and Se in the plasma, the yolk and the liver, and Se in the albumen increased significantly in the experiment groups. Correlation analysis showed that a significant positive correlation existed between dietary Se and Se in the plasma, the yolk and the albumen, between dietary Fe and Fe in the plasma and the yolk, and between plasma Fe and yolk Fe. These results suggest that diets supplemented with high iron and selenium can greatly increase iron and selenium contents in the egg. Therefore, laying hens can serve as effective biological transporter to transfer iron and selenium from the diet to the egg.