Resumo

OCAMPO, Lucía E; BOTERO, Mónica C  e  RESTREPO, Luis F. Growth culture evaluation of Daphnia magna feed with Saccharomyces cereviseae enrichment with oat soy. Rev Colom Cienc Pecua [online]. 2010, vol.23, n.1, pp.78-85. ISSN 0120-0690.

Experimental cultivate cladocerans Daphnia magna feed with probiotics was realized. At University of Antioquia, Faculty of Agrarian Science, Larviculture, fish and food live Laboratory (Larpeali), under controlled conditions of environmental temperature between (21 - 25 °C), water temperature (22 - 23°C) and pH (7.6), were performed. One diet of Saccharomyces cereviseae was used and one enriched medium of oat-soy flour (fatty acid, n-6) to concentrations of diet and enriched medium were the same, 25 ppm and 12.5 ppm, 2x2 factorial treatment arrangements (2 levels of Saccharomyces cereviseae and 2 levels of oat-soy flour, diets was fed to four replicates of Daphnia culture per treatment in order to determine their effects on the populations cultivated. A 15-days feeding, each third day, trial were conducted, to assess the organisms at final period. The results showed significant high difference (p<0.01) for the effect of the treatment with Saccharomyces cereviseae 25 ppm + oat-soy flour 25 ppm. In the same way, the results showed significant difference (p<0.05) for the effect of the treatment with Saccharomyces cereviseae 12.5 ppm + oat-soy flour 25 ppm on the population growth of the cladocerans. Rest of treatments were not significantly difference (p>0.05). The results showed that the combination of their high concentrations of components enhanced the population growth of Daphnia magna, reaching a number of microcrustaceans of 826ª ± 9.57. These cladocerans for their characteristics of growth in culture, present favorable adaptation to the handling conditions to produce biomasses potentially useful as nutritious particle as live food in aquaculture purposes.

Palavras-chave : cladocerans; Daphnia magna; diet; enrichment medium; live food.

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