Effect of a peptide complex on the defense mechanism of shrimp, Marsupenaeus japonicus against pathogens and changes in environmental parameters
| Autor: | Toshiaki Itami, Raja Sudhakaran, Nguyen Thi Hue Linh, Yousuke Taoka |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Treated group animal structures food.ingredient biology 010604 marine biology & hydrobiology fungi Hemocyte Marsupenaeus 04 agricultural and veterinary sciences Peptide complex Aquatic Science biology.organism_classification 01 natural sciences Vibrio Shrimp food Immune system Yolk 040102 fisheries 0401 agriculture forestry and fisheries Food science Agronomy and Crop Science |
| Zdroj: | Journal of the World Aquaculture Society. 51:488-500 |
| ISSN: | 1749-7345 0893-8849 |
| Popis: | This study examines the effect of a peptide complex extracted from chicken egg yolk on the action of the immune system of kuruma shrimp, Marsupenaeus japonicus, on pathogens as well as changes in environmental parameters. In the design of three independent experiments, we defined the treated shrimp or the control shrimp as shrimp receiving diet with or without peptide complex administration, respectively. In the first experiment, the shrimp were challenged by Vibrio sp. after 1 week of feeding; the results showed that the survival rates of the treated shrimp were 69%. In the other experiments, the shrimp were exposed to low salinity or high temperature to analyze the changes in various immunological parameters. In a low‐salinity test, results showed that the total hemocyte count (THC) of the treated group was significantly higher than that of the control group within 24 hr. In a high‐temperature test, THC and phenoloxidase activity of the shrimp in the treated group displayed significantly higher values than that in the control group during 48 hr. In short, the administration of the peptide complex was significantly effective in the prevention of disease and enhancement of the tolerance of kuruma shrimp to environmental changes. |
| Databáze: | OpenAIRE |
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