Effects of Probiotic Additives on Algal Growth Potential and Fecal Decreasing Rate in Culture of Carp, Cyprinus carpio.

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  • コイの飼育生物過程における藻類増殖能と糞等残留率に及ぼす生菌剤添加給餌の影響
  • コイ ノ シイク セイブツ カテイ ニ オケル ソウルイ ゾウショクノウ ト フン トウ ザンリュウリツ ニ オヨボス セイキンザイ テンカ キュウジ ノ エイキョウ

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Abstract

To improve the ecological cycle in culture of carp, effects of Probiotic additives on algal growth potential (AGP) and fecal decreasing rates (FDR) were examined. Four experiments of carp culture fed on different amount of probiotic additives, “EARTH GENITOR”, were conducted: Exp-1 for 0% aid as control experiment, Exp-2 for 0.5% aid to the diets, Exp-3 for 2% aid to the diets, and Exp-4 for 5% aid. Higher AGP, 140% were obtained in Exp-3 and -4. Lower AGP, 82 to 100% were observed in Exp-2 and -1, respectively. Exp-2, -3, and -4 showed almost the same FDR, 1.43 to 1.63% per day, which was about two times higher than that of FDR in Exp-1, the control. These results suggest that probiotic additives in diets could mitigate the self-pollution in aquaculture.

Journal

  • Aquaculture Science

    Aquaculture Science 47 (4), 583-587, 1999

    Japanese Society for Aquaculture Science

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