Effects of Probiotic Additive Feedings on Fish Growth, Fecal Remaining, Water Quality and Algal Growth Potential in Culture of Carp, Cyprinus carpio.

NIIRO Masaya, HIRATA Hachiro

doi:10.11233/aquaculturesci1953.48.531

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Other Title

コイの飼育過程における成長，藻類増殖能，糞留率，水質等に及ぼすプロバイオテック添加給餌の影響
コイノシイクカテイニオケルセイチョウソウルイゾウショクノウフンリュウリツスイシツトウニオヨボスプロバイオテックテンカキュウジノエイキョウ

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Abstract

In order to know the effects of probiotic additive feedings in culture of carp, two feeding trials were conducted. In trial 1, 2% and 5% of Uchishiro microorganisms (UM) were added to the mash diets, respectively. In trial 2, 2% and 5% of commercial yogurts (CY) were added, respectively. In each trial, sterilized UM and CY were added to the diets as“control”. Algal growth potential (AGP), fecal total nitrogen (TN), fecal remaining rate (FRR), and water quality were determined; nitrogen (DIN), phosphate (DIP), pO₂, and pCO₂ were used as indicators for evaluating water quality.<BR>In both trials, higher AGP, about 120%, lower DIN, lower DIP and lower pCO₂ were obtained in the culture water of carp fed on the diets containing UM and CY. Thus, negative correlationship between AGP and DIN, DIP, pCO₂ was indicated. This way due to the metabolism of the algae, N. oculata grown in the culture water. Furthermore, lower TN and FRR were obtained at the trials containing UM and CY.<BR>Those results suggested that adding probiotic additives to the diets can mitigate the self pollution in aquaculture.

Journal

Aquaculture Science

Aquaculture Science 48 (3), 531-536, 2000

Japanese Society for Aquaculture Science

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