Do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout (Samo trutta m. fario L.)?
The aim of the study was to determine the influence of feeds with or without β-glucan-based immunomodulatory supplements (groups BF and UB or B and U, respectively; feeding period 14 and 28 days) on the welfare of brown trout. The diets tested did not influence the rearing indices. The type of feed...
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| Format: | Article |
| Language: | English |
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Sciendo
2023-09-01
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| Series: | Fisheries & Aquatic Life |
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| Online Access: | https://doi.org/10.2478/aopf-2023-0013 |
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| author | Demska-Zakęś Krystyna Rożyński Maciej Gomułka Piotr Rożyński Rafał Formicki Krzysztof Zakęś Zdzisław |
| author_facet | Demska-Zakęś Krystyna Rożyński Maciej Gomułka Piotr Rożyński Rafał Formicki Krzysztof Zakęś Zdzisław |
| author_sort | Demska-Zakęś Krystyna |
| collection | DOAJ |
| description | The aim of the study was to determine the influence of feeds with or without β-glucan-based immunomodulatory supplements (groups BF and UB or B and U, respectively; feeding period 14 and 28 days) on the welfare of brown trout. The diets tested did not influence the rearing indices. The type of feed and the feeding period were confirmed to have a significant influence on the white blood cell (WBC) count. WBC counts were lower than those in the initial sample particularly on day 14 of the experiment. Red blood cell (RBC) counts and hematocrit (HCT) were determined by feeding period, and the values of these parameters decreased the longer the tested feeds were applied. These changes were accompanied by increases in the values of mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC). Feed type determined levels of chloride ion (Cl-) and ammonia (NH3) and alkaline phosphatase (ALP) activity and feeding period affected sodium (Na+) and albumin (ALB) concentrations, while aspartate aminotransferase (AST) activity depended on both factors. Changes in leukograms were noted in all the groups, inter alia, significant increases in the share of lymphocytes, and after changing diets, decreases in the percentage of neutrophils, myeloperoxidase activity (AMPO) in phagocytes and cidal ability (CA). After day 28, AMPO and CA values increased and were significantly higher in groups BF and UB. |
| first_indexed | 2024-03-08T03:21:51Z |
| format | Article |
| id | doaj.art-98f752cb28d54710935f666b9fb72245 |
| institution | Directory Open Access Journal |
| issn | 2545-059X |
| language | English |
| last_indexed | 2024-03-08T03:21:51Z |
| publishDate | 2023-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Fisheries & Aquatic Life |
| spelling | doaj.art-98f752cb28d54710935f666b9fb722452024-02-12T09:13:08ZengSciendoFisheries & Aquatic Life2545-059X2023-09-0131311213210.2478/aopf-2023-0013Do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout (Samo trutta m. fario L.)?Demska-Zakęś Krystyna0Rożyński Maciej1Gomułka Piotr2Rożyński Rafał3Formicki Krzysztof4Zakęś Zdzisław51Department of Ichthyology and Aquaculture, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Poland2Department of Aquaculture, National Inland Fisheries Research Institute, Olsztyn, Poland Oczapowskiego 10, 10-719, Olsztyn, Poland1Department of Ichthyology and Aquaculture, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Poland3Department of Salmonid Research, National Inland Fisheries Research Institute, Olsztyn, Poland4Chair of Hydrobiology, Ichthyology and Biotechnology of Reproduction. Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology in Szczecin, Poland2Department of Aquaculture, National Inland Fisheries Research Institute, Olsztyn, Poland Oczapowskiego 10, 10-719, Olsztyn, PolandThe aim of the study was to determine the influence of feeds with or without β-glucan-based immunomodulatory supplements (groups BF and UB or B and U, respectively; feeding period 14 and 28 days) on the welfare of brown trout. The diets tested did not influence the rearing indices. The type of feed and the feeding period were confirmed to have a significant influence on the white blood cell (WBC) count. WBC counts were lower than those in the initial sample particularly on day 14 of the experiment. Red blood cell (RBC) counts and hematocrit (HCT) were determined by feeding period, and the values of these parameters decreased the longer the tested feeds were applied. These changes were accompanied by increases in the values of mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC). Feed type determined levels of chloride ion (Cl-) and ammonia (NH3) and alkaline phosphatase (ALP) activity and feeding period affected sodium (Na+) and albumin (ALB) concentrations, while aspartate aminotransferase (AST) activity depended on both factors. Changes in leukograms were noted in all the groups, inter alia, significant increases in the share of lymphocytes, and after changing diets, decreases in the percentage of neutrophils, myeloperoxidase activity (AMPO) in phagocytes and cidal ability (CA). After day 28, AMPO and CA values increased and were significantly higher in groups BF and UB.https://doi.org/10.2478/aopf-2023-0013conservative aquaculturefishβ-glucanwelfare |
| spellingShingle | Demska-Zakęś Krystyna Rożyński Maciej Gomułka Piotr Rożyński Rafał Formicki Krzysztof Zakęś Zdzisław Do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout (Samo trutta m. fario L.)? Fisheries & Aquatic Life conservative aquaculture fish β-glucan welfare |
| title | Do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout (Samo trutta m. fario L.)? |
| title_full | Do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout (Samo trutta m. fario L.)? |
| title_fullStr | Do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout (Samo trutta m. fario L.)? |
| title_full_unstemmed | Do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout (Samo trutta m. fario L.)? |
| title_short | Do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout (Samo trutta m. fario L.)? |
| title_sort | do immunomodulatory substances facilitate recovery from stress caused by feed changes in juvenile brown trout samo trutta m fario l |
| topic | conservative aquaculture fish β-glucan welfare |
| url | https://doi.org/10.2478/aopf-2023-0013 |
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