Eficácia do florfenicol e da oxitetraciclina no controle de Aeromonas hydrophila em pacu (Piaractus mesopotamicus)
Data
2011-06-01
Autores
Carraschi, S. P. [UNESP]
Cruz, C. [UNESP
Machado Neto, J. G. [UNESP]
Castro, M. P. [UNESP
Bortoluzzi, N. L. [UNESP
Gírio, A. C. F. [UNESP
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Minas Gerais (UFMG), Escola de Veterinária
Resumo
Determinou-se a concentração eficaz de oxitetraciclina (OTC) e florfenicol (FFC) no tratamento de Aeromonas hydrophila em pacu (Piaractus. mesopotamicus). Os pacus foram submetidos à captura duas vezes ao dia por quatro dias e em seguida foram infectados com A. hydrophila (2,4x10(7) bactéria mL-1). Os tratamentos utilizados foram: controle sem infecção (CSI), controle com infecção (CCI) e tratados com 110,0; 140,0 e 170,0mgOTC.kg-1, e 5,0; 10,0 e 15,0mgFFC.kg-1. As variáveis de qualidade da água foram monitoradas diariamente. Após o tratamento, no CSI dos dois testes, ocorreu 100% de sobrevivência. Nos testes com OTC, no CCI, a sobrevivência foi de 29,2%; em 110,0mg.kg-1, 37,5%; em 140,0mg.kg-1, 29,2%; e em 170,0mg.kg-1, 50,0%. Nos testes com FFC, foi eficaz com 10,0mg.kg-1, e no CCI a sobrevivência foi de 76,9%; em 5,0mg.kg-1, 81,81%; em 10,0mg/L.kg-1, 100% e em 15,0mg.kg-1, 87,5%. A OTC, em concentrações de até 170,0mg.kg-1 de ração, não é eficaz para o controle de A. hydrophila em pacu, e o FFC é eficaz na concentração de 10,0mg.kg-1 e ambos não alteram as variáveis de qualidade de água.
The effective concentration of antibiotics OTC and FFC in the treatment of Aeromonas hydrophila in pacu (Piaractus mesopotamicus). The pacus were subjected to capture twice daily (four days) and then were infected with A. hydrophila (2.4 x10 7 bacteria mL -1 ). The treatments were: control without infection (CSI), with infection control (CCI) and 110.0, 140.0 and 170.0mgOTC.kg -1 , and 5.0, 10.0 and 15.0mgFFC.kg -1 . The variables of water quality were monitored daily. After treatment, the CSI of the two experiments was 100% survival. In tests with OTC, the CCI was 29.17%, in 110.0mg.kg -1 , 37.5%, in 140.0mg.kg -1 , 29.17% and in 170.0mg.kg -1 , 50.0%. The FFC was effective with 10.0 mg kg -1 , and in the CCI the survival was 76.9%, in 5.0mg.kg -1 , 81.81%, in 10.0mg/L.kg -1 , 100% and in 15.0mg.kg -1 , 87.5%. The OTC in concentrations of up to 170.0 mg.kg -1 of ration is not effective in the control of A. hydrophila in pacu and the FFC is effective in the concentration of 10.0mg.kg -1 and this antibiotic does not change the variables of water quality.
The effective concentration of antibiotics OTC and FFC in the treatment of Aeromonas hydrophila in pacu (Piaractus mesopotamicus). The pacus were subjected to capture twice daily (four days) and then were infected with A. hydrophila (2.4 x10 7 bacteria mL -1 ). The treatments were: control without infection (CSI), with infection control (CCI) and 110.0, 140.0 and 170.0mgOTC.kg -1 , and 5.0, 10.0 and 15.0mgFFC.kg -1 . The variables of water quality were monitored daily. After treatment, the CSI of the two experiments was 100% survival. In tests with OTC, the CCI was 29.17%, in 110.0mg.kg -1 , 37.5%, in 140.0mg.kg -1 , 29.17% and in 170.0mg.kg -1 , 50.0%. The FFC was effective with 10.0 mg kg -1 , and in the CCI the survival was 76.9%, in 5.0mg.kg -1 , 81.81%, in 10.0mg/L.kg -1 , 100% and in 15.0mg.kg -1 , 87.5%. The OTC in concentrations of up to 170.0 mg.kg -1 of ration is not effective in the control of A. hydrophila in pacu and the FFC is effective in the concentration of 10.0mg.kg -1 and this antibiotic does not change the variables of water quality.
Descrição
Palavras-chave
tratamento, doenças, bactérias, antibióticos, treatment, diseases, bacteria, antibiotics
Como citar
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Universidade Federal de Minas Gerais, Escola de Veterinária, v. 63, n. 3, p. 579-583, 2011.