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Probiotic with yeast in Nile tilapia feeding during the sexual reversion period cultivated in water of tank of fish culture Probiótico com levedura na alimentação da tilápia do Nilo, durante o período de reversão sexual, cultivada em água de tanque de cultivo

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Author(s): Fábio Meurer | Mariana Sá e Silva | Mateus Matiuzzi da Costa | Leda Maria Saragiotto Colpini | Arthur dos Santos Mascioli

Journal: Revista Brasileira de Saúde e Produção Animal
ISSN 1519-9940

Volume: 10;
Issue: 2;
Date: 2009;
Original page

ABSTRACT
This experiment objectified to evaluate the Saccharomyces cerevisiae as probiotic in rations for the Nile tilapia (Oreochromis niloticus) during sexual reversion period. Were distributed 320 larvae in a completely randomized design with two treatments and eight replications in 25 L aquarium. The treatments consisted of a commercial ration for tilapia during sexual reversion added 0.1% of S. cerevisiae (1010 S. cerevisiae CFU/g of product) and another one without the inclusion of the probiotic. Fingerlings had been counted, measured and weighed after 29 days, two fingerlings from each treatment, were randomized chosen and has their liver weighed for hepatic-somatic index determination. For microbiological studies, two samples of the water of the aquaria and one larvae of each aquarium had been carried through, in days 5 and 29 of the experiment. The number of total mesophilic bacterial did not present significant difference between the larvae of the first collection and nor between the water samples of the two carried through collections. For the second collection it had significantly higher difference in the counting for TP larvae. Any total coliforms appear in samples of water and larvae. The performance and survival were not influenced by the inclusion of Saccharomyces cerevisiae (P>0.05). Hepatic-somatic index had a significant difference (P0,05) entre as duas coletas, contudo na segunda coleta houve número maior (P0,05) pelos tratamentos, já o índice hepatossomático foi menor (P

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