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Effect of dietary taurine and cystine on growth performance of juvenile red sea bream Pagrus major

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タイトル: Effect of dietary taurine and cystine on growth performance of juvenile red sea bream Pagrus major
著者: Matsunari, Hiroyuki / Furuita, Hirofumi / Yamamoto, Takeshi / Kim, Shin-Kwon / Sakakura, Yoshitaka / Takeuchi, Toshio
発行日: 2008年 1月31日
出版者: Elsevier B.V.
引用: Aquaculture, 274(1), pp.142-147; 2008
抄録: Two experiments were conducted to investigate the effect of dietary taurine and cystine on growth and body composition of juvenile red sea bream Pagrus major. In Experiment I, a casein-based semi-purified diet included a small amount of fish meal were supplemented with taurine at the levels of 0 (control) and 1.0%. The experimental diets in Experiment II were without fishmeal and supplemented with taurine at 0 (control), 0.5, 1.0 and 2.0% or cystine at 1.0 and 2.0%. These diets were fed three times a day for 6 weeks to fish (average body weight: 2.3 g in Experiment I and 2.5 g in Experiment II). In Experiment I, fish fed the taurine-supplemented diet showed significantly (P < 0.05) improved growth, feed efficiency and feed consumption relative to fish fed the unsupplemental diet. The whole body taurine content increased, whereas the non-essential amino acid contents decreased, in fish fed the taurine-supplemental diet compared to fish fed the unsupplemented diet. In Experiment II, the growth, feed efficiency and feed consumption of fish fed the taurine-supplemented diets, irrespective of the dietary taurine levels, were significantly higher than those of fish fed the control diet and the cystine-supplemented diets. Taurine content in the whole body increased with the dietary taurine level, while the taurine contents did not increase by the supplemental cystine. Other free amino acid contents in the taurine-supplemented diet groups followed similar trends to those in Experiment I. These results indicate that supplemental taurine to a casein-based semi-purified diet at more than 0.5% improved the growth and feed performance of juvenile red sea bream. It is also suggested that juvenile red sea bream cannot metabolize cystine into taurine.
キーワード: Casein / Cystine / Growth / Juvenile / Metabolism / Pagrus major / Taurine
URI: http://hdl.handle.net/10069/22512
ISSN: 00448486
DOI: 10.1016/j.aquaculture.2007.11.002
権利: Copyright © 2007 Elsevier B.V. All rights reserved.
資料タイプ: Journal Article
原稿種類: author
出現コレクション:080 学術雑誌論文

引用URI : http://hdl.handle.net/10069/22512



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