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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39061

Title: Effects of thermal stress on dietary requirement of vitamin C in thornfish Terapon jarbua
Authors: Liang-Tan Chien
Deng-Fwu Hwang
Sen-Shyong Jeng
Contributors: 國立臺灣海洋大學:食品科學系
Keywords: vitamin C requirement
ascorbic acid
deformed fish
thornfish
thermal stress
Date: 1999-10
Issue Date: 2016-11-23T03:11:46Z
Publisher: Fisheries Science
Abstract: Abstract: Attempts are made to elucidate the optimal dietary requirement of vitamin C in thornfish Terapon jarbua cultured at 28, 32 and 36°C, separately. The fish were fed diets with 0, 80, 400 and 2000 mg/kg vitamin C-supplement for 8 weeks. The growth was the best when the fish fed diet with 400 mg/kg vitamin C-supplement and cultured at 36°C. The mortality of fish increased with increasing water temperature, but decreased with increasing the amount of vitamin C supplemented in diets. The deformed fish appeared at 36°C when fish were fed diet supplemented no more than 80 mg/kg vitamin C. The vitamin C level and hydroxyproline/proline ratio in the fish tissues increased with increasing the amount of vitamin C supplemented in diets. Both variations of vitamin C level and hydroxyproline/proline ratio in thornfish were similar to each other. Judging from the data of growth, feed conversion factor, vitamin C level and hydroxyproline/proline ratio, the optimal level of vitamin C in the diet for thornfish was 80 mg/kg when fish were cultured at 28 and 32°C, but it had to be elevated to 400 mg/kg when fish were cultured at 36°C.
Relation: 65(5)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39061
Appears in Collections:[食品科學系] 期刊論文

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