Enterococcus faecium as potential probiotic for ornamental neotropical cichlid fish, Pterophyllum scalare (Schultze, 1823)
| Autor: | Joel Artur Rodrigues Dias, Paulo César Falanghe Carneiro, Natalino da Costa Sousa, Higo Andrade Abe, Alexandre Nizio Maria, Carlos Alberto Martins Cordeiro, José Luiz Pedreira Mouriño, Rodrigo Yudi Fujimoto, Grazielle Gomes, Raimundo Darley Figueredo Silva, Maurício Laterça Martins, Jonathan Stuart Ready |
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| Přispěvatelé: | JOEL ARTUR RODRIGUES DIAS, UFPA, HIGO ANDRADE ABE, UFPA, NATILINO COSTA SOUSA, UFPA, RAIMUNDO DARLEY FIGUEREDO SILVA, UFPA, CARLOS ALBERTO MARTINS CORDEIRO, UFPA, GRAZIELLE FERNANDA EVANGELISTA GOMES, UFPA, JONATHAN STUART READY, UFPA, JOSE LUIZ PEDREIRA MOURINO, UFSC, MAURICIO LATERÇA MARTINS, UFSC, PAULO CESAR FALANGHE CARNEIRO, CPATC, ALEXANDRE NIZIO MARIA, CPATC, RODRIGO YUDI FUJIMOTO, CPATC. |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Aquaculture Aquatic Science medicine.disease_cause 01 natural sciences Microbiology law.invention Probiotic In vivo law Immunity medicine Sanitation Pathogen Piscicultura Pterophyllum scalare biology 010604 marine biology & hydrobiology Pathogenic bacteria 04 agricultural and veterinary sciences biology.organism_classification 040102 fisheries Sanidade Animal 0401 agriculture forestry and fisheries Peixe Agronomy and Crop Science Bacteria Enterococcus faecium |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| ISSN: | 1573-143X 0967-6120 |
| Popis: | The production of ornamental fishes has been intensified to attend the global market. With this expansion, an increase in infections and infirmities has been observed, most of which are attributed to pathogenic bacteria. Dietary supplements to improve growth and immunity of these animals have been introduced as a safe way to control and prevent disease outbreaks. This study therefore aims to isolate, identify, select and evaluate strains of lactic acid bacteria that show potential as probiotics for Pterophyllum scalare. Of 16 initial isolates, five strains were molecularly identified as Enterococcus faecium. Profiles of probiotic candidate strains were based on: catalase test and hemolytic activity; in vitro tolerance responses to NaCl (0.5; 1.0; 1.5; 2.0; 2.5 and 3.0%), pH (4, 5, 6, 8, and 9), and bile salts (5%); pathogen inhibition halo size maximum growth rate; and final counts of viable cells. In vivo effectiveness of the best performing strain in vitro was determined by growth and survival parameters for post-larvae over a period of 40 days. All strains fulfilled the criteria as probiotics in animals, with Strain 4 showing the best results in vitro, and improving growth and viability of fish in vivo. |
| Databáze: | OpenAIRE |
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