Significance of vitamin E supplementation, dietary content of polyunsaturated fatty acids, and preslaughter stress on oxidative status in pig as reflected in cell integrity and antioxidative enzyme activities in porcine muscle

被引：16
作者：
Young, JF [1 ]
Rosenvold, K [1 ]
Stagsted, J [1 ]
Nielsen, JH [1 ]
Andersen, HJ [1 ]
机构：
[1] Danish Inst Agr Sci, Dept Food Sci, DK-8830 Tjele, Denmark
来源：
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2005年 / 53卷 / 03期
关键词：
pig; stress; vitamin E; antioxidative enzymes; LDH; PUFA;
D O I：
10.1021/jf0490652
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
The present study investigates the combined effects of feed-induced increase in polyunsaturated fatty acids (PUFA) content and/or alpha-tocopherol content in pig muscles and preslaughter stress on cell integrity. Cell integrity was determined by plasma lactate dehydrogenase (LDH) activity, and antioxidative status of muscle was measured by activities of the antioxidative enzymes catalase, superoxide dismutase, and glutathione peroxidase. Preslaughter stress increased LDH activity, reflecting loss in cell membrane integrity independent of increased content of PUFA and/or alpha-tocopherol. However, feed-induced increase of PUFA decreased the LDH activity in plasma immediately after slaughter. Catalase activity in the muscle tissue increased as a consequence of the high-PUFA diet, which may indicate an increased demand caused by introduction of oxidative labile PUFA.
引用
收藏
页码：745 / 749
页数：5
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