EFEITO DO Lactobacillus plantarum NO TRATO INTESTINAL DE ALEVINOS DE Oreochromis niloticus

Abstract

Resumo:O objetivo deste trabalho foi avaliar as alterações na microbiota do trato intestinal e desempenho zootécnico de alevinos de tilápia do Nilo (Oreochromis niloticus) alimentados com dietas suplementadas com Lactobacillus plantarum. Cento e vinte alevinos revertidos sexualmente foram distribuídos em seis caixas, divididos em dois tratamentos, em triplicata: alevinos alimentados com dieta suplementa com L. plantarum e alevinos alimentados com dieta controle. Após 42 dias, as tilápias alimentadas com a dieta suplementada com L. plantarum apresentaram maior número de bactérias ácido-lácticas, 3,5x104 UFC e 1,1x10 2 UFC por g de trato, e menor de bactérias totais, 5,8x106 UFC e 5,2x10 7 UFC por g de trato intestinal, em relação aos alimentados com dieta controle, além de incrementar em 3,9% o ganho em peso semanal, 15,6% a biomassa final e 15,5% eficiência alimentar. O uso de probiótico na alevinagem de tilápia eleva a produtividade. Palavras-chave: cultivo de peixes; probióticos; tilápia. Abstract:The objective of this study was to evaluate alterations in the intestinal tract microbiota and growth performance of Nile tilapia (Orechromis niloticus) fed diets supplemented with Lactobacillus plantarum. One hundred and twenty sexually reversed fingerlings were stocked in six aquaria and divided into two treatments, in triplicate: fingerlings fed diet supplement with L. plantarum and fingerlings fed control diet. After 42 days, tilapia fed the diet supplemented with L. plantarum had higher amount of lactic acid bacteria, 3,5x10 4 CFU and 1,1x10 2 CFU per g tract, and lower total bacteria, 5,8x10 6 CFU and 5,2x10 7 CFU per g tract, than the fish fed the control diet. Furthermore, probiotics increased 3,9% the weekly weight gain, 15,6% final biomass and 15,5% feed efficiency. The use of probiotics in tilapia hatcheries boosts productivity.

Autochthonous probiotic as growth promoter and immunomodulator forAstyanax bimaculatuscultured in water recirculation system

“…Jatobá and Mouriño () verified a higher amount of LAB and lower total heterotrophic bacteria in the intestinal tract of Oreochromis niloticus fingerlings fed a diet supplemented with Lactobacillus plantarum for 35 days when compared with the control group, corroborating results of the present study. Dawood et al.…”

“…Among the microorganisms used for this purpose, lactic acid bacteria are gram‐positive enterobacteria that produce lactic acid as the main product of their fermentation (Calo‐Mata et al., ). In recent years, several studies have demonstrated the ability of probiotics to improve the immune system of animals, especially when applied during the early stages of development (Addo et al., ; Dawood et al., ; Jatobá & Mouriño, ; Jatobá et al., ; Pereira et al., ; Pourgholam, Khara, Safari, Sadati, & Aramli, ).…”

Selection of autochtone probiotic for Astyanax bimaculatus

“…These results were observed in Centropomus spp. (Barbosa et al, 2011), O. niloticus juveniles (Jatobá et al, 2008 and fingerlings (Jatobá and Mouriño, 2015), Pseudoplatystoma sp. (Mouriño et al, 2012) andL.…”

Effects of anEnterococcus faecium‐based probiotic on growth performance and health of Pirarucu,Arapaima gigas

“…This is within the range of 4%–39.2% observed in other fish fed with probiotic‐supplemented diets (Dias et al, ; Giri et al, ; Jatobá et al, ; Soltani, Kane, et al, ; Standen et al, ). Improved fish growth with probiotic supplementation can be attributed to improved digestion as well an increase in intestinal villi, increasing the contact surface for nutrient uptake and production of digestive enzymes, improving digestibility and nutrient retention (Dawood et al, ; Dias et al, ; Gupta, Gupta, & Dhawan, ; Jatobá & Mouriño, ; Sankar, Philip, Philip, & Singh, ; Soltani, Kane, et al, ).…”