Effects of Dietary Fishmeal Replacement by Poultry By-Product Meal and Hydrolyzed Feather Meal on Liver and Intestinal Histomorphology and on Intestinal Microbiota of Gilthead Seabream (<i>Sparus aurata</i>)
The effects on liver and intestinal histomorphology and on intestinal microbiota in gilthead seabream (<i>Sparus aurata</i>) fed diets that contained poultry by-product meal (PBM) and hydrolyzed feather meal (HFM) as fishmeal replacements were studied. Fish fed on a series of isonitrogen...
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MDPI AG
2021-09-01
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| author | Pier Psofakis Alexandra Meziti Panagiotis Berillis Eleni Mente Konstantinos A. Kormas Ioannis T. Karapanagiotidis |
| author_facet | Pier Psofakis Alexandra Meziti Panagiotis Berillis Eleni Mente Konstantinos A. Kormas Ioannis T. Karapanagiotidis |
| author_sort | Pier Psofakis |
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| description | The effects on liver and intestinal histomorphology and on intestinal microbiota in gilthead seabream (<i>Sparus aurata</i>) fed diets that contained poultry by-product meal (PBM) and hydrolyzed feather meal (HFM) as fishmeal replacements were studied. Fish fed on a series of isonitrogenous and isoenergetic diets, where fishmeal protein of the control diet (FM diet) was replaced by either PBM or by HFM at 25%, 50% and 100% without amino acid supplementation (PBM25, PBM50, PBM100, HFM25, HFM50 and HFM100 diets) or supplemented with lysine and methionine (PBM25+, PBM50+, HFM25+ and HFM50+ diets). The use of PBM and HFM at 25% fishmeal replacement generated a similar hepatic histomorphology to FM-fed fish, indicating that both land animal proteins are highly digestible at low FM replacement levels. However, 50% and 100% FM replacement levels by either PBM or HFM resulted in pronounced hepatic alterations in fish with the latter causing more severe degradation of the liver. Dietary amino acid supplementation delivered an improved tissue histology signifying their importance at high FM replacement levels. Intestinal microbiota was dominated by <i>Proteobacteria</i> (58.8%) and <i>Actinobacteria</i> (32.4%) in all dietary groups, but no specific pattern was observed among them at any taxonomic level. This finding was probably driven by the high inter-individual variability observed. |
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| last_indexed | 2024-03-10T07:07:59Z |
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| spelling | doaj.art-b7e471ce889042c592221cfd266c4c932023-11-22T15:43:15ZengMDPI AGApplied Sciences2076-34172021-09-011119880610.3390/app11198806Effects of Dietary Fishmeal Replacement by Poultry By-Product Meal and Hydrolyzed Feather Meal on Liver and Intestinal Histomorphology and on Intestinal Microbiota of Gilthead Seabream (<i>Sparus aurata</i>)Pier Psofakis0Alexandra Meziti1Panagiotis Berillis2Eleni Mente3Konstantinos A. Kormas4Ioannis T. Karapanagiotidis5Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Street, 38446 Volos, GreeceDepartment of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Street, 38446 Volos, GreeceDepartment of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Street, 38446 Volos, GreeceDepartment of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Street, 38446 Volos, GreeceDepartment of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Street, 38446 Volos, GreeceDepartment of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Street, 38446 Volos, GreeceThe effects on liver and intestinal histomorphology and on intestinal microbiota in gilthead seabream (<i>Sparus aurata</i>) fed diets that contained poultry by-product meal (PBM) and hydrolyzed feather meal (HFM) as fishmeal replacements were studied. Fish fed on a series of isonitrogenous and isoenergetic diets, where fishmeal protein of the control diet (FM diet) was replaced by either PBM or by HFM at 25%, 50% and 100% without amino acid supplementation (PBM25, PBM50, PBM100, HFM25, HFM50 and HFM100 diets) or supplemented with lysine and methionine (PBM25+, PBM50+, HFM25+ and HFM50+ diets). The use of PBM and HFM at 25% fishmeal replacement generated a similar hepatic histomorphology to FM-fed fish, indicating that both land animal proteins are highly digestible at low FM replacement levels. However, 50% and 100% FM replacement levels by either PBM or HFM resulted in pronounced hepatic alterations in fish with the latter causing more severe degradation of the liver. Dietary amino acid supplementation delivered an improved tissue histology signifying their importance at high FM replacement levels. Intestinal microbiota was dominated by <i>Proteobacteria</i> (58.8%) and <i>Actinobacteria</i> (32.4%) in all dietary groups, but no specific pattern was observed among them at any taxonomic level. This finding was probably driven by the high inter-individual variability observed.https://www.mdpi.com/2076-3417/11/19/8806nutritionaquaculturefishmeal replacementland animal proteinshistologyintestinal microbiota |
| spellingShingle | Pier Psofakis Alexandra Meziti Panagiotis Berillis Eleni Mente Konstantinos A. Kormas Ioannis T. Karapanagiotidis Effects of Dietary Fishmeal Replacement by Poultry By-Product Meal and Hydrolyzed Feather Meal on Liver and Intestinal Histomorphology and on Intestinal Microbiota of Gilthead Seabream (<i>Sparus aurata</i>) Applied Sciences nutrition aquaculture fishmeal replacement land animal proteins histology intestinal microbiota |
| title | Effects of Dietary Fishmeal Replacement by Poultry By-Product Meal and Hydrolyzed Feather Meal on Liver and Intestinal Histomorphology and on Intestinal Microbiota of Gilthead Seabream (<i>Sparus aurata</i>) |
| title_full | Effects of Dietary Fishmeal Replacement by Poultry By-Product Meal and Hydrolyzed Feather Meal on Liver and Intestinal Histomorphology and on Intestinal Microbiota of Gilthead Seabream (<i>Sparus aurata</i>) |
| title_fullStr | Effects of Dietary Fishmeal Replacement by Poultry By-Product Meal and Hydrolyzed Feather Meal on Liver and Intestinal Histomorphology and on Intestinal Microbiota of Gilthead Seabream (<i>Sparus aurata</i>) |
| title_full_unstemmed | Effects of Dietary Fishmeal Replacement by Poultry By-Product Meal and Hydrolyzed Feather Meal on Liver and Intestinal Histomorphology and on Intestinal Microbiota of Gilthead Seabream (<i>Sparus aurata</i>) |
| title_short | Effects of Dietary Fishmeal Replacement by Poultry By-Product Meal and Hydrolyzed Feather Meal on Liver and Intestinal Histomorphology and on Intestinal Microbiota of Gilthead Seabream (<i>Sparus aurata</i>) |
| title_sort | effects of dietary fishmeal replacement by poultry by product meal and hydrolyzed feather meal on liver and intestinal histomorphology and on intestinal microbiota of gilthead seabream i sparus aurata i |
| topic | nutrition aquaculture fishmeal replacement land animal proteins histology intestinal microbiota |
| url | https://www.mdpi.com/2076-3417/11/19/8806 |
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