コイの背こけ病に対する数種抗酸化剤の予防効果

概要

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Succeeding to the previous work, in which the so-called "Sekoke" disease of carp was shown to be a typical muscle dystrophy due to oxidized oil, the preventive effect of antioxidants, methylene blue, BHA and ethyl gallate, was examined and compared with that of DL-α-tocopheryl acetate. In addition, oxidized saury oil of different peroxide values and acetone-soluble lipids from dried silk-worm pupae were tested. As shown in Tables 1 and 4, these antioxidants except DL-α-tocopheryl acetate are ineffective, although they were reported to alleviate some of disorders induced by oxidized fish oils in terrestial animals. It is also observed that the muscle dystrophy is induced by the oxidized saury oil of a very low peroxide value and also by acetone-soluble lipids from dried silk-worm pupae. This may suggest that peroxide has little connection with the incidence of muscle dystrophy. Results of chemical analyses on the test diets and animals are summarized in Tables 2, 3 and 5.
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