酸化脂肪によるコイのセコケ病の発生とビタミンの予防効果

概要

論文の詳細を見る
The disease of carp, which is characterized by a marked loss of flesh in the back (Fig. 1) and called “Sekoke” disease, has been a serious problem for carp culturists in Japan. Besides muscle dystrophy, loss of appetite, poor growth and high mortality have been observed as symptoms. As the disease was suspected to be a dietary one due to oxidized oil in dried silk-worm pupae used as a main ingredient of feedstuff, the relation between the disease and oxidized oil was examined. Carp fingerlings were kept for about 120 days on the diet containing 10% of the oxidized saury oil (peroxide value 120-150), with or without DL-α-tocopheryl acetate (Table 1). In 60 days, typical signs of the disease appeared in the group receiving the oxidized oil without DL-α-tocopheryl acetate and the rate of ill fish amounted to 56% at the end of the experiment. The pathological examination revealed that the symptoms are quite identical with those observed on the fish in carp farms. The disease was effectively prevented by the addition of DL-α-tocopheryl acetate (50mg/100g diet). Some results of chemical analyses on the test animals are summerized in Tables 2-4. In connection with the feeding test, the turnover of vitamin E in carp was also examined. As seen in Fig. 2, it is very rapid and marked in hepatopancreas, while far less distinct in the muscle.
公益社団法人日本水産学会の論文