Effect of dietary moisture content on growth and feed intake in conger eel <I>Conger myriaster</I>

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  • 飼料中の水分がアナゴの成長と飼料摂取量に及ぼす影響
  • Effect of dietary moisture content on growth and feed intake in conger eel Conger myriaster

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Abstract

Two feeding experiments were conducted to examine effect of moisture content (dry or moist) of diets on growth and feed intake of Conger eel. Commercially available dry pellets (2 mm) and moist feed hydrated after crushing the dry pellets were used in both experiments. In the first experiment, the two diets were fed to individually kept 10 fish (5 fish per treatment) 5 days a week for 6 weeks. There were no significant differences in body weight gain (%), specific growth rate and daily feed intake of the two treatments. In the second experiment, those fish used in the first experiment were fed the opposite feed and measured daily feed intake amount and feed ingestion time (time spent to initiate ingestion of feed). Fish of both groups took a long time before day 11 but it took shorter (within 30 seconds) after 11 days. No significant differences were detected in both parameters in the two groups, indicating there is no strong preference between the two diets. Taken together, this study demonstrated the moisture content did not display significant effects on growth, feed intake and palatability of conger eel, suggesting that dry feed can be applicable for practical conger eel culture.

Journal

  • Aquaculture Science

    Aquaculture Science 69 (1), 71-77, 2021

    Japanese Society for Aquaculture Science

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