Effects of Probiotic Additive Feedings on Algal Growh Potentials and Fecal Decomposition Rates in Cultured Carp, Cyprinus carpio.

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  • コイの飼育過程における藻類増殖能および糞等の分解に及ぼすプロバイオテック添加給餌の影響
  • Effects of Probiotic Additive Feedings on Algal Growth Potentials and Fecal Decomposition Rates in Cultured Carp, Cyprinus carpio

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Abstract

In order to determine the ecological effects of probiotic additive feedings in cultured carp, three probiotic additives, Earth genitor “EG”, Amakusa PX “AP”, and Commercial yogurts“CY” were examined. Relative values of algal growth potential (AGP) against control in “+ EG”, “+ AP”, and “+ CY” groups were observed to be 125%, 120%, and 109%, respectively. Relative values of fecal volume in“+ EG” and “+ CY” groups were 90%, fecal total nitrogen (TN) in “+ EG” group was 95%, and fecal total phosphorus (TP) in “+EG” and “+CY” groups were 79%. The highest elution rates of NH4-N and PO4-P were observed in the “+EG” group. Higher growth rates of carp was obtained in the “+ EG” and “+ CY” groups. Thus, probiotic additive feedings in cultured carp induced the promotion of an ecological cycle in the rearing water.

Journal

  • Aquaculture Science

    Aquaculture Science 49 (1), 91-96, 2001

    Japanese Society for Aquaculture Science

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