ニジマス色調改善色素としての<i>Adonis aestivalis</i>の利用

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  • Utilization of Adonis aestivalis as a dietary pigment source for rainbow trout salmo gairdneri.
  • ニジマス色調改善色素としてのAdonis aestivalisの利用〔英文〕
  • ニジマス シキチョウ カイゼン シキソ トシテノ Adonis aestiva

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The flower, Adonis aestivalis and its pigment extract were fed to two different sizes of rainbow trout Salmo gairdneri at a level of 10mg total pigment/100g diest.<br> The larger fish (average weitht 400g) were fed the pigment extract for 8 weeks. In the males, carotenoids were mainly deposited in the skin and a samll amount was found in the flesh. However, in the females, a relatively high level of carotenoids was detected in the flesh.<br> The smaller fish were fed the diets containing Adonis flower petals or its pigment extract. After two weeks of feeding, the Adonis flower group discontinued feeding activity and mortalities ensued. However, no mortalities resulted in the Adonis extract group over a three month feeding period, and a noticeable pink coloration was observed in the skin of this group. Pathological ex-amination of the fish fed the Adonis flower diet showed that the fish had an entreitis. The results of this experiment suggested the possible presence of toxic conpounds in A. aestivalis flower. How-ever, the extract of A. aestivalis may serve as an excellent dietary pigment source.

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  • 日本水産学会誌

    日本水産学会誌 56 (5), 783-788, 1990

    公益社団法人 日本水産学会

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