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Possibilities to raise vitamin D content of rainbow trout ( Oncorhynchus mykiss ) by elevated feed cholecalciferol contents
Author(s) -
Mattila Pirjo,
Piironen Vieno,
Hakkarainen Tuuli,
Hirvi Timo,
UusiRauva Esko,
Eskelinen Päivi
Publication year - 1999
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/(sici)1097-0010(199902)79:2<195::aid-jsfa166>3.0.co;2-c
Subject(s) - cholecalciferol , rainbow trout , vitamin , zoology , trout , fish <actinopterygii> , vitamin d and neurology , biology , endocrinology , medicine , fishery
Farmed rainbow trout ( Oncorhynchus mykiss ) is a widely consumed fish species. The cholecalciferol content in the muscle of rainbow trout is, however, quite low compared with that in several wild fish species. The present study was designed to determine whether it is possible to increase the cholecalciferol content of rainbow trout (initial weight about 500 g) with the use of cholecalciferol‐dosed feeds. Three different cholecalciferol concentrations (8.9, 17.4 and 53.9 μg 100 g −1 feed) were tested. After 4 months of feeding, the cholecalciferol determinations from samples of muscle and liver were performed using an HPLC method. Here, we suggest that the cholecalciferol content of rainbow trout muscle cannot be increased by feeding them with elevated doses of the vitamin. © 1999 Society of Chemical Industry