Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry
ABSTRACT This study evaluated the dietary supplementation of ginger Zingiber officinale essential oil for the Neotropical catfish Pseudoplatystoma reticulatum, its effects on fish hematology, immunology, the response of these variables to induction of stress (exposition to air for 3 min), and a bact...
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Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
2021
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oai:scielo:S0718-560X20210004005952021-09-27Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometryAlmeida,Rômullo Guilherme dos SantosMartins,Mateus AranhaOliveira,Fulvia CristinaSanto,Fayane EspiritoCalves,Gleice SouzaPilarski,FabianaChagas,Edsandra CamposFernandes,Carlos EuricoMartins,Maurício LaterçaCampos,Cristiane Meldau de Pseudoplatystoma reticulatum feed additive hematology immunology aeromoniasis bacterial challenge hepatocyte ABSTRACT This study evaluated the dietary supplementation of ginger Zingiber officinale essential oil for the Neotropical catfish Pseudoplatystoma reticulatum, its effects on fish hematology, immunology, the response of these variables to induction of stress (exposition to air for 3 min), and a bacterial challenge with Aeromonas hydrophila, and the effects on liver histomorphometry. Three levels of the ginger essential oil were evaluated (0.5, 1.0 and 1.5%) in addition to a control group (0%) in a feeding trial for 65 days in triplicate. Fish hematology and immunology were assessed at five different moments: after the feeding trial (0), after the stress induction (stress), and three points after the bacterial challenge (3, 6 and 24 h post-challenge). Fish fed the ginger essential oil supplemented diets did not exhibit significant differences between the hematocrit at the 0-sample point and the 24 h post-challenge point (P ≥ 0.05), while fish fed the control diet presented significantly lower values for the hematocrit when comparing those same two moments (P < 0.05). The thrombocytes count for fish fed the 0.5% essential oil supplemented diet was significantly higher than all other groups after the feeding trial (P < 0.05), and their total leukocytes count after the stress induction was also significantly higher than the other treatments (P < 0.05). Although the results mentioned above indicate that the ginger essential oil had positive health effects on the fish, no significant differences in survival after the challenge with A. hydrophila were observed (P ≥ 0.05). Lastly, histomorphometry suggests that the essential oil did not negatively impact fish hepatocytes.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.49 n.4 20212021-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000400595en10.3856/vol49-issue4-fulltext-2667 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Pseudoplatystoma reticulatum feed additive hematology immunology aeromoniasis bacterial challenge hepatocyte |
| spellingShingle |
Pseudoplatystoma reticulatum feed additive hematology immunology aeromoniasis bacterial challenge hepatocyte Almeida,Rômullo Guilherme dos Santos Martins,Mateus Aranha Oliveira,Fulvia Cristina Santo,Fayane Espirito Calves,Gleice Souza Pilarski,Fabiana Chagas,Edsandra Campos Fernandes,Carlos Eurico Martins,Maurício Laterça Campos,Cristiane Meldau de Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry |
| description |
ABSTRACT This study evaluated the dietary supplementation of ginger Zingiber officinale essential oil for the Neotropical catfish Pseudoplatystoma reticulatum, its effects on fish hematology, immunology, the response of these variables to induction of stress (exposition to air for 3 min), and a bacterial challenge with Aeromonas hydrophila, and the effects on liver histomorphometry. Three levels of the ginger essential oil were evaluated (0.5, 1.0 and 1.5%) in addition to a control group (0%) in a feeding trial for 65 days in triplicate. Fish hematology and immunology were assessed at five different moments: after the feeding trial (0), after the stress induction (stress), and three points after the bacterial challenge (3, 6 and 24 h post-challenge). Fish fed the ginger essential oil supplemented diets did not exhibit significant differences between the hematocrit at the 0-sample point and the 24 h post-challenge point (P ≥ 0.05), while fish fed the control diet presented significantly lower values for the hematocrit when comparing those same two moments (P < 0.05). The thrombocytes count for fish fed the 0.5% essential oil supplemented diet was significantly higher than all other groups after the feeding trial (P < 0.05), and their total leukocytes count after the stress induction was also significantly higher than the other treatments (P < 0.05). Although the results mentioned above indicate that the ginger essential oil had positive health effects on the fish, no significant differences in survival after the challenge with A. hydrophila were observed (P ≥ 0.05). Lastly, histomorphometry suggests that the essential oil did not negatively impact fish hepatocytes. |
| author |
Almeida,Rômullo Guilherme dos Santos Martins,Mateus Aranha Oliveira,Fulvia Cristina Santo,Fayane Espirito Calves,Gleice Souza Pilarski,Fabiana Chagas,Edsandra Campos Fernandes,Carlos Eurico Martins,Maurício Laterça Campos,Cristiane Meldau de |
| author_facet |
Almeida,Rômullo Guilherme dos Santos Martins,Mateus Aranha Oliveira,Fulvia Cristina Santo,Fayane Espirito Calves,Gleice Souza Pilarski,Fabiana Chagas,Edsandra Campos Fernandes,Carlos Eurico Martins,Maurício Laterça Campos,Cristiane Meldau de |
| author_sort |
Almeida,Rômullo Guilherme dos Santos |
| title |
Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry |
| title_short |
Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry |
| title_full |
Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry |
| title_fullStr |
Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry |
| title_full_unstemmed |
Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry |
| title_sort |
dietary supplementation of ginger (zingiber officinale) essential oil exhibits positive immunomodulatory effects on the neotropical catfish pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry |
| publisher |
Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar |
| publishDate |
2021 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000400595 |
| work_keys_str_mv |
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