屠宰前不同时期接受日粮醋酸生育酚补充剂的肉鸡的α-生育酚组织含量和氧化稳定性。

Tissue content of alpha-tocopherol and oxidative stability of broilers receiving dietary alpha-tocopheryl acetate supplement for various periods pre-slaughter.

Morrissey P A, Brandon S, Buckley D J, Sheehy P J, Frigg M

Department of Nutrition, University College, Cork, Ireland.

Br Poult Sci. 1997 Mar;38(1):84-8. doi: 10.1080/00071669708417945.

Abstract

The effects of dietary alpha-tocopheryl acetate on the alpha-tocopherol status of chicken plasma and tissues were investigated. The rate of iron-ascorbate-induced lipid peroxidation was also studied. 2. One hundred and forty four chicks were divided into 6 groups: one control group was fed a basal diet of 30 mg alpha-tocopheryl acetate/kg food for the duration of the trial. A supplemental diet of 200 mg alpha-tocopheryl acetate was fed to each of the other 5 groups for 1,2,3,4 or 5 weeks prior to slaughter. 3. Supplementation resulted in an increase in alpha-tocopherol in plasma and all tissues examined. Saturation levels of alpha-tocopherol were observed in plasma after 1 week of feeding and in tissues within 3 to 4 weeks of feeding. 4. Supplementation with alpha-tocopheryl acetate for up to 4 weeks pre-slaughter resulted in significant reductions in susceptibility to induced lipid peroxidation. 5. Overall, the results show that feeding 200 mg alpha-tocopheryl acetate/kg food to chicks for at least 4 weeks prior to slaughter is necessary to optimise muscle content and stability against lipid peroxidation.

摘要

研究了日粮中醋酸α-生育酚对鸡血浆和组织中α-生育酚状态的影响。还研究了抗坏血酸铁诱导的脂质过氧化速率。2. 144只雏鸡分为6组：一个对照组在试验期间饲喂每千克食物含30毫克醋酸α-生育酚的基础日粮。其他5组在屠宰前1、2、3、4或5周，每组饲喂含200毫克醋酸α-生育酚的补充日粮。3. 补充醋酸α-生育酚导致血浆和所有检测组织中的α-生育酚增加。饲喂1周后血浆中以及饲喂3至4周后组织中观察到α-生育酚的饱和水平。4. 在屠宰前补充醋酸α-生育酚长达4周可显著降低诱导脂质过氧化的敏感性。5. 总体而言，结果表明，在屠宰前至少4周给雏鸡饲喂每千克食物200毫克醋酸α-生育酚对于优化肌肉含量和提高抗脂质过氧化稳定性是必要的。