Evaluation of Lactobacillus paracasei subsp. tolerans isolated from Jenyn`s sprat (Ramnogaster arcuata) as probiotic for juvenile rainbow trout Oncorhynchus mykiss (Walbaum, 1792).
- Lopez Cazorla, Andrea Cecilia
- Sica, María Gabriela
- Brugnoni, Lorena Inés
- Marucci, Patricia Liliana
- Cubitto, María Amelia
DOIAbstract
A lactic acid bacterial strain, Lactobacillus paracasei subsp tolerans F2, isolated from the intestine of Ramnogaster arcuata, was evaluated as growth promoters in juvenile rainbow trout Oncorhynchus mykiss (Walbaum, 1972) farming. In addition, the safety of the strain was assessed according to the FAO recommendations. Strain F2 was susceptible to the most antibiotics tested and no evidence of hemolytic activity was found. When the strain of Lactobacillus paracasei subsp tolerans F2 was administered with food, no adverse effects on animal?s health were observed and fish biomass increased 12% more in treatment group than in the control one. Significant differences were detected in the specific growth rate and feed conversion ratio. In the gr...
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