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<p>Considering the increasing importance of fishmeal made from processed fish residues and the high production of tilapia, this study examined the effects of substituting tilapia by-product meal (TBM) for the protein in Peruvian anchovy meal (PAM) in the diet of juvenile red sea bream (<i>Pagrus major</i>), focusing on growth and body composition. Five isonitrogenous and isolipidic diets were prepared by replacing PAM with TBM at 0, 15, 30, 45, and 55% (named as T0, 15, 30, 45, and 55, respectively). Thirty fish (mean body weight, 10.8&#xa0;g) were accommodated into 500 L tanks in triplicate. In the 6-week feeding trial, no significant differences were observed in growth performance depending on the dietary TBM level (<i>p</i> &gt; 0.05). In contrast, the crude fat content of the whole body decreased linearly with increasing dietary TBM levels, with a significant difference between the T55 and T0 groups (<i>p</i> &lt; 0.05). Serum high-density lipoprotein concentration also tended to increase linearly with increasing dietary TBM levels. Overall, PAM in the diet of juvenile red sea bream could be replaced by up to 45% with TBM without any adverse effects on its growth and physiology over a 6-week period.</p>

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Inclusion of tilapia (Oreochromis niloticus) by-product meal in the diet for red sea bream (Pagrus major, Temminck & Schlegel) fingerlings

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月26日

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  • Fumiaki Takakuwa,
  • Takanobu Migita,
  • Toshiko Tanaka,
  • Junya Ukei,
  • Taisuke Iizuka

摘要

Considering the increasing importance of fishmeal made from processed fish residues and the high production of tilapia, this study examined the effects of substituting tilapia by-product meal (TBM) for the protein in Peruvian anchovy meal (PAM) in the diet of juvenile red sea bream (Pagrus major), focusing on growth and body composition. Five isonitrogenous and isolipidic diets were prepared by replacing PAM with TBM at 0, 15, 30, 45, and 55% (named as T0, 15, 30, 45, and 55, respectively). Thirty fish (mean body weight, 10.8 g) were accommodated into 500 L tanks in triplicate. In the 6-week feeding trial, no significant differences were observed in growth performance depending on the dietary TBM level (p > 0.05). In contrast, the crude fat content of the whole body decreased linearly with increasing dietary TBM levels, with a significant difference between the T55 and T0 groups (p < 0.05). Serum high-density lipoprotein concentration also tended to increase linearly with increasing dietary TBM levels. Overall, PAM in the diet of juvenile red sea bream could be replaced by up to 45% with TBM without any adverse effects on its growth and physiology over a 6-week period.