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Dietary supplementation with autochthonous Bacillus cereus improves growth performance and survival in tambaqui Colossoma macropomum
Author(s) -
Dias Joel A R,
Abe Higo A,
Sousa Natalino C,
Couto Márcia V S,
Cordeiro Carlos A M,
Meneses Juliana O,
Cunha Fernanda S,
Mouriño Jose Luiz P,
Martins Mauricio L,
Barbas Luís A L,
Carneiro Paulo C F,
Maria Alexandre N,
Fujimoto Rodrigo Y
Publication year - 2018
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.13767
Subject(s) - tambaqui , biology , bacillus cereus , probiotic , cereus , zoology , food science , aeromonas hydrophila , fish <actinopterygii> , bacteria , fishery , genetics
The aim of this study was to evaluate the effect of dietary supplementation with the autochthonous probiotic bacteria Bacillus cereus on growth performance, haematological parameters and survival of tambaqui ( Colossoma macropomum ). Tambaqui fingerlings (0.94 ± 0.02 g) were fed for 120 days the following diets: basal (without probiotic) and three supplemented diets (4.2 × 10 4 , 3.9 × 10 6 and 3.3 × 10 8 CFU/g). Growth performance and haematological parameters were evaluated every 30 days. Thereafter, fish were challenged against Aeromonas hydrophila and survival was evaluated. Probiotic B. cereus improved weight and length gains ( p < 0.05), and increased neutrophils and thrombocyte counts ( p < 0.05) in tambaqui supplemented with 3.9 × 10 6 CFU/g diet. Challenged fish fed unsupplemented diet presented the lowest survival rate (33.4%) while fish fed diets supplemented at 4.2 × 10 4 , 3.9 × 10 6 and 3.3 × 10 8 CFU/g B. cereus had 88.8%, 80.5% and 80.5% relative per cent survival respectively. These results demonstrated that B. cereus supplemented as probiotics to C. macropomum for 120 days improved physiological and haematological responses, leading to enhanced survival in this fish species.