カタクチイワシ投餌によるニジマス,タイの成長とB1の添加効果 (海産魚のチアミナーゼIの研究-4,5-)

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The effect of dietary thiamine nitrate on the growth of rainbow trout and sea bream fed raw anchovy was investigated. The thiamine used in this experiment was coated with fat in order to prevent its decomposition by thiamininase present in raw anchovy. The feeding periods were 118 and 20 days for rainbow trout and sea bream, respectively. In both species, the weight gain was greater in fish on a thiamine-supplemented diet than in those on a diet without the vitamine. In rainbow trout, the thiamine concentration in the liver of the latter group gradually decreased, while blood pyruvic acid levels increased. In young sea bream, the thiamine content in muscle of the thiamine-deficient group decreased to levels as low as 40% of the initial value.Decomposition of the thiamine nitrate coated with fat was slow whereas that of the uncoated one was rapid.
日本水産學會の論文