Probióticos em dietas para tilápia do Nilo durante a reversão sexual

Abstract

The objective was to evaluate the productive performance, phenotypic sexing, and intestinal microbiology of Nile tilapia, GIFT strain, fed with diets formulated with Bacillus cereus var. Toyoi and Bacillus subtilis C-3102, during sex reversal. Fish (24.7±0.50mg) were randomly distributed in 24 aquaria in a completely randomized design compound for three treatments (two probiotics and absent) and eight replications. The use of B. cereus and improved the final weight, weight gain, average daily weight gain and specific growth rate fed in relation to B. subtilis. There was no association between the proportion of males and females and inclusion of the probiotics. The counts of total bacteria and total coliforms were not influenced by the addition of probiotics. Bacillus subtilis did not improve the productive performance in Nile tilapia. Bacillus subtilis did not improve the productive performance of Nile tilapia. Among the two studied probiotics is recommended probiotic containing Bacillus cereus C-3102 not adversely affect the sex reversal effectiveness and performance zootechnical.