Effect of carvacrol on the haemato‐immunological parameters, growth and resistance of Colossoma macropomum (Characiformes: Serrasalmidae) infected by Aeromonas hydrophila

2021 ◽  
Author(s):  
Jhonatan M. da Silva ◽  
Arlan de Lima Paz ◽  
Adalberto L. Val
Keyword(s):  
Aeromonas Hydrophila ◽  
Immunological Parameters ◽  
Colossoma Macropomum

scholarly journals Borneo herbal plant extracts as a natural medication for prophylaxis and treatment of Aeromonas hydrophila and Pseudomonas fluorescens infection in tilapia (Oreochromis niloticus)

F1000Research ◽  
2019 ◽  
Vol 7 ◽  
pp. 1847 ◽  
Author(s):  
Esti Handayani Hardi ◽  
Rudy Agung Nugroho ◽  
Irawan Wijaya Kusuma ◽  
Wiwin Suwinarti ◽  
Agung Sudaryono ◽  
...  
Keyword(s):  
Survival Rate ◽  
Pseudomonas Fluorescens ◽  
Plant Extracts ◽  
Aeromonas Hydrophila ◽  
Oreochromis Niloticus ◽  
Bacterial Infections ◽  
Pathogenic Bacteria ◽  
Prevention Trial ◽  
Phagocytic Index ◽  
Immunological Parameters

Background: The combination of some plant extracts to prevent and treat bacterial infections is gaining momentum, because of effectiveness against certain bacteria. This study aims to describe the antibacterial and immunostimulant abilities of Boesenbergia pandurata (BP), Solanum ferox (SF) and Zingiber Zerumbet (ZZ) plant extracts to treat and prevent Aeromonas hydrophila and Pseudomonas fluorescens infection on Tilapia (Oreochromis niloticus). Methods: Tilapia (initial weight 15±2 g) were injected intramuscularly (0.1 ml/fish) with a combination of A. hydrophila and P. fluorescens at a density of 1×10 5 CFU ml -1 of each bacteria. Treatment trials were performed at day 7 post-injection with each combined extract, while the prevention trial was performed by including the combined extract into the commercial diet for six and seven days prior to injection. Various extract combinations were 60 mg SF extract/kg feed with 40 mg ZZ/kg feed (SF60/ZZ40), SF50/ZZ50, BP90/SF10, and BP50/SF50. Haemato-immunological parameters were performed for four weeks. Results: In prevention trials, tilapia fed SF50/ZZ50 showed a significant increase of white and red blood cells. Similarly, significantly increased haematocrit was found in tilapia fed SF50/ZZ50 in the treatment trial but not in the prevention trial. In both trials, haemoglobin of tilapia was not affected by any combined extracts but decreased the number of bacteria. Phagocytic index, respiratory burst, lysozyme activity and survival rate of fish fed combined extracts were found significantly higher than controls. The amount of pathogenic bacteria in fish fed combined extracts was lower than the control at week 4 (P<0.05). In both trials The percentage of survival rate and relative percent survival of tilapia fed SF 50/ZZ 50, showed the optimum results compared to the other combinations. Conclusions: The combined extract in feed, especially SF50/ZZ50 has a positive effect on the tilapia's innate immune system of tilapia to treat and prevent bacterial infections.

scholarly journals Desempenho produtivo e respostas fisiopatológicas de tambaquis alimentados com ração suplementada com β-glucano

2013 ◽  
Vol 48 (8) ◽  
pp. 899-905 ◽  
Author(s):  
Edsandra Campos Chagas ◽  
Fabiana Pilarski ◽  
Róberson Sakabe ◽  
Flávio Ruas de Moraes
Keyword(s):  
Aeromonas Hydrophila ◽  
Colossoma Macropomum

O objetivo deste trabalho foi avaliar o efeito do imunoestimulante β-glucano na dieta do tambaqui (Colossoma macropomum) sobre o desempenho produtivo, as respostas fisiológicas e imunológicas, e a resistência ao desafio com Aeromonas hydrophila. O experimento foi conduzido em delineamento inteiramente casualizado, em arranjo fatorial 5x2, com cinco níveis de β-glucano na dieta (0, 0,1, 0,2, 0,4 e 0,8%) e dois tempos de amostragem (antes e após o desafio com A. hydrophila), com três repetições. Os peixes (28,65±0,49 g; 12,14±0,07 cm) foram alimentados, por 60 dias, com dieta (28% de proteína bruta) suplementada com preparação comercial de β-glucano. Após o período de alimentação, avaliou-se o desempenho produtivo, e os peixes foram desafiados com A. hydrophila. Os parâmetros hematológicos e imunológicos (concentração e atividade de lisozima) foram avaliados antes e após o desafio bacteriano. Após o desafio bacteriano, observouse a ocorrência de anemia normocítica-normocrômica. A suplementação com β-glucano não alterou a concentração nem a atividade da lisozima; porém, a menor concentração de β-glucano (0,1%) favoreceu maior sobrevivência para a espécie quando desafiada com Aeromonas hydrophila. A suplementação de β-glucano não exerce influência sobre o desempenho produtivo e nem sobre os parâmetros hematológicos do tambaqui.

scholarly journals Borneo herbal plant extracts as a natural medication for prophylaxis and treatment of Aeromonas hydrophila and Pseudomonas fluorescens infection in tilapia (Oreochromis niloticus)

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 1847 ◽  
Author(s):  
Esti Handayani Hardi ◽  
Rudy Agung Nugroho ◽  
Irawan Wijaya Kusuma ◽  
Wiwin Suwinarti ◽  
Agung Sudaryono ◽  
...  
Keyword(s):  
Immune System ◽  
Pseudomonas Fluorescens ◽  
Plant Extracts ◽  
Aeromonas Hydrophila ◽  
Oreochromis Niloticus ◽  
Bacterial Infections ◽  
Pathogenic Bacteria ◽  
Prevention Trial ◽  
Immunological Parameters ◽  
Prevention Trials

Background: This study aims to describe the antibacterial and immunostimulant abilities of Boesenbergia pandurata (BP), Solanum ferox (SF) and Zingiber Zerumbet (ZZ) plant extracts to treat and prevent Aeromonas hydrophila and Pseudomonas fluorescens infection on Tilapia (Oreochromis niloticus). Methods: Tilapia (initial weight 15±2 g) were injected intramuscularly (0.1 ml/fish) with a combination of A. hydrophila and P. fluorescens at a density of 1×105 CFU ml-1 of each bacteria. Treatment trials were performed at day 7 post-injection with each combined extract, while the prevention trial was performed by including the combined extract into the diet for six and seven days prior to injection. Various combinations of extract—60 ml SF extract/kg feed with 40 ml ZZ/kg feed (SF60/ZZ40), SF50/ZZ50, BP90/SF10, and BP50/SF50—were mixed with a commercial diet and used in both treatment and prevention trials. Haematological and immunological parameters were performed every week for four weeks. Results: In prevention trials, tilapia fed SF50/ZZ50 showed a significant increase of white and red blood cells from weeks 2 to 4. Similarly, significantly increased haematocrit was also found in tilapia fed SF50/ZZ50 in the treatment trial but not in the prevention trial. However, haemoglobin of tilapia in both trials was not affected by any of the various combinations of extract in the diet. Furthermore, phagocytic, respiratory burst, lysozyme activity indexes and survival rate of fish fed with combined extracts were found to be significantly higher than controls. Moreover, the amount of pathogenic bacteria in fish that were fed combined extracts was also lower than the control and was significantly different at week 4. Conclusions: This study indicates that the addition of combined extract into feed has a positive effect on the tilapia's immune system. The SF50/ZZ50 combination appears to improve the innate immune system of tilapia to treat and prevent bacterial infections.

Genetic (co)variation between resistance to Aeromonas hydrophila and growth in tambaqui (Colossoma macropomum)

Aquaculture ◽  
2020 ◽  
Vol 523 ◽  
pp. 735225 ◽  
Author(s):  
Raquel B. Ariede ◽  
Milena V. Freitas ◽  
John F.G. Agudelo ◽  
Carolina H.S. Borges ◽  
Lieschen V.G. Lira ◽  
...  
Keyword(s):  
Aeromonas Hydrophila ◽  
Colossoma Macropomum

The use of eugenol against Aeromonas hydrophila and its effect on hematological and immunological parameters in silver catfish (Rhamdia quelen)

2014 ◽  
Vol 157 (3-4) ◽  
pp. 142-148 ◽  
Author(s):  
Fernando Jonas Sutili ◽  
Luiz Carlos Kreutz ◽  
Mirela Noro ◽  
Leticia Trevisan Gressler ◽  
Berta Maria Heinzmann ◽  
...  
Keyword(s):  
Aeromonas Hydrophila ◽  
Immunological Parameters ◽  
Silver Catfish ◽  
Rhamdia Quelen
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