Effects of Dietary Phosphorus Supplementation on Growth and Excretion of Nitrogen and Phosphorus by Growing Yellowtail <I>Seriola quinqueradiata</I>

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  • Md. Shah Alam Sarker
    Laboratory of Fish Nutrition, Department of Marine Biosciences, Tokyo University of Marine Science and Technology
  • Satoh Shuichi
    Laboratory of Fish Nutrition, Department of Marine Biosciences, Tokyo University of Marine Science and Technology
  • Yamamoto Yoshihiro
    Oita Institute of Marine and Fisheries Science
  • Satoh the late Koh-ichi
    Oita Institute of Marine and Fisheries Science
  • Viswanath Kiron
    Laboratory of Fish Nutrition, Department of Marine Biosciences, Tokyo University of Marine Science and Technology

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Other Title
  • ブリの成長および窒素とリンの排泄に及ぼすリン添加の影響
  • Effects of dietary phosphorus supplementation on growth and excretion of nitrogen and phosphorus by growing yellowtail Seriola quinqueradiata

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Abstract

The effects of dietary phosphorus (P) supplementation on growth and excretion of nitrogen (N) and P was investigated in growing yellowtail fed fishmeal (FM) based practical diets. This study was conducted under on-site conditions for 12 months with the intention of developing a less-polluting feed. Three diets were formulated to contain 13, 15, and 17 mg P/g diet by supplementing 0, 0.8 and 1.6% mono calcium phosphate. Each net cage of yellowtail (120 at start, 60 at termination) were fed the diets for 12 months during which the fish grew from approximately 885 to 3200 g, at an average water temperature of 20.6°C. The P supplemented diets gave slightly better growth performance compared to the control (no additional P) diet. These diets also gave the better feed conversion ratios. However, the inorganic P supplementation caused a reduction in both N and P retention that led to increased amounts being excreted. The results of the present study demonstrate that it is not necessary to add P to FM-based diet for growing yellowtail. When put into practice, such diets would enable a reduction in loading of P and N from fish in aquaculture.

Journal

  • Aquaculture Science

    Aquaculture Science 57 (2), 279-284, 2009

    Japanese Society for Aquaculture Science

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