Effect of dietary Moringa oleifera leaf on the immune response and control of Aeromonas hydrophila infection in Nile tilapia (Oreochromis niloticus) fry
| Autor: | Amany Abbass, Eman I. Soror, Amel M. El Asely, Eman A. Abd El-Gawad, Brian Austin |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Antioxidant biology 010604 marine biology & hydrobiology medicine.medical_treatment 04 agricultural and veterinary sciences Aquatic Science biology.organism_classification Malondialdehyde 01 natural sciences Superoxide dismutase Aeromonas hydrophila Oreochromis Nile tilapia chemistry.chemical_compound medicine.anatomical_structure Immune system Animal science chemistry White blood cell 040102 fisheries biology.protein medicine 0401 agriculture forestry and fisheries Agronomy and Crop Science |
| Zdroj: | Aquaculture International. 28:389-402 |
| ISSN: | 1573-143X 0967-6120 |
| DOI: | 10.1007/s10499-019-00469-0 |
| Popis: | Natural plant dietary supplementation in aquafeed could be used as an effective way for increasing the immunocompetency and disease resistance of fish. The current study aimed to investigate the potential effects of dietary Moringa oleifera leaf powder supplementation on the immune response, antioxidant status, and disease resistance against Aeromonas hydrophila in Oreochromis niloticus. A total of 180 fish (of 2.6 ± 0.5 g average weight) were randomly divided into three groups and fed on basal diet (= controls), and 1.5 and 5% (w/w) M. oleifera leaf powder incorporated into diets for 60 days. After the feeding trial, fish were challenged with A. hydrophila and continued on the same feeding regime during the next 2 weeks. Oral administration of O. niloticus fry with M. oleifera leaf powder led to significantly enhanced immune responses, i.e., respiratory burst, phagocytic and lysozyme activities, IgM level, and antioxidant enzyme activities, namely superoxide dismutase, catalase, and glutathion peroxidase levels in the liver, kidneys, and spleen. Conversely, the malondialdehyde level decreased significantly in the liver and kidneys. There was a significant increase in white blood cell count and non-significant change in red blood cell count and hemoglobin levels. Following challenge with A. hydrophila, all the fish in the experimental groups survived compared to only 20% of the controls; the relative percent survival was 100%. However, there was not any significant effect on growth as a result of feeding with the experimental diets. These results suggested that M. oleifera leaf powder-supplemented diets could enhance the immune response of O. niloticus fry and prevent disease caused by A. hydrophila. |
| Databáze: | OpenAIRE |
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