The Influence of Commercial Feed Supplemented with <i>Carnobacterium maltaromaticum</i> Environmental Probiotic Bacteria on the Rearing Parameters and Microbial Safety of Juvenile Rainbow Trout
The aim of this study was to determine the effect of commercial feed (CF) supplemented with 0.1% of the <i>Carnobacterium maltaromaticum</i> environmental probiotic strain on the rearing parameters, apparent nutrient digestibility, and microbial safety of juvenile rainbow trout (<i>...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Online Access: | https://www.mdpi.com/2076-2615/12/23/3321 |
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| author | Iwona Gołaś Jacek Arkadiusz Potorski |
| author_facet | Iwona Gołaś Jacek Arkadiusz Potorski |
| author_sort | Iwona Gołaś |
| collection | DOAJ |
| description | The aim of this study was to determine the effect of commercial feed (CF) supplemented with 0.1% of the <i>Carnobacterium maltaromaticum</i> environmental probiotic strain on the rearing parameters, apparent nutrient digestibility, and microbial safety of juvenile rainbow trout (<i>Oncorhynchus mykiss</i>). The fish were fed CF (control group, CG) and experimental feed (EF) supplemented with 0.1% of <i>C. maltaromaticum</i> (experimental group, EG) for 56 days. The final body weight and total body length of the fish were measured. The growth rate, condition factor, feed conversion ratio, viscerosomatic and hepatosomatic indices, and apparent digestibility coefficients of protein (PAD), lipids (LAD), ash (AAD), and nitrogen-free extract (NFEAD) were calculated. The total viable counts of <i>C. maltaromaticum</i> bacteria, mesophilic bacteria, hemolytic mesophilic bacteria, <i>Pseudomonas fluorescens</i>, <i>Aeromonas hydrophila</i>, <i>Staphylococcus</i> sp., and sulfite-reducing anaerobic spore-forming <i>Clostridium</i> sp. were determined in digestive tract contents and the skin of fish. Feed supplementation with <i>C. maltaromaticum</i> significantly affected most rearing parameters, as well as the PAD, LAD, AAD and NFE values, and bacterial counts. The principal component analysis (PCA) revealed significant positive correlations (<i>p</i> < 0.05) between fish growth rates, PAD and LAD values vs. <i>C. maltaromaticum</i> counts in the EF and in the digestive tract contents of the fish. |
| first_indexed | 2024-03-09T17:55:07Z |
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| id | doaj.art-475c0a9f4c7f472e9d417059156192e1 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-09T17:55:07Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-475c0a9f4c7f472e9d417059156192e12023-11-24T10:25:11ZengMDPI AGAnimals2076-26152022-11-011223332110.3390/ani12233321The Influence of Commercial Feed Supplemented with <i>Carnobacterium maltaromaticum</i> Environmental Probiotic Bacteria on the Rearing Parameters and Microbial Safety of Juvenile Rainbow TroutIwona Gołaś0Jacek Arkadiusz Potorski1Department of Water Protection Engineering and Environmental Microbiology, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720 Olsztyn, PolandDepartment of Water Protection Engineering and Environmental Microbiology, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720 Olsztyn, PolandThe aim of this study was to determine the effect of commercial feed (CF) supplemented with 0.1% of the <i>Carnobacterium maltaromaticum</i> environmental probiotic strain on the rearing parameters, apparent nutrient digestibility, and microbial safety of juvenile rainbow trout (<i>Oncorhynchus mykiss</i>). The fish were fed CF (control group, CG) and experimental feed (EF) supplemented with 0.1% of <i>C. maltaromaticum</i> (experimental group, EG) for 56 days. The final body weight and total body length of the fish were measured. The growth rate, condition factor, feed conversion ratio, viscerosomatic and hepatosomatic indices, and apparent digestibility coefficients of protein (PAD), lipids (LAD), ash (AAD), and nitrogen-free extract (NFEAD) were calculated. The total viable counts of <i>C. maltaromaticum</i> bacteria, mesophilic bacteria, hemolytic mesophilic bacteria, <i>Pseudomonas fluorescens</i>, <i>Aeromonas hydrophila</i>, <i>Staphylococcus</i> sp., and sulfite-reducing anaerobic spore-forming <i>Clostridium</i> sp. were determined in digestive tract contents and the skin of fish. Feed supplementation with <i>C. maltaromaticum</i> significantly affected most rearing parameters, as well as the PAD, LAD, AAD and NFE values, and bacterial counts. The principal component analysis (PCA) revealed significant positive correlations (<i>p</i> < 0.05) between fish growth rates, PAD and LAD values vs. <i>C. maltaromaticum</i> counts in the EF and in the digestive tract contents of the fish.https://www.mdpi.com/2076-2615/12/23/3321juvenile rainbow troutcommercial feedrearing parametersapparent digestibility of nutrients<i>C. maltaromaticum</i> environmental probiotic isolatepotentially pathogenic bacteria in the digestive tract and skin of the fish |
| spellingShingle | Iwona Gołaś Jacek Arkadiusz Potorski The Influence of Commercial Feed Supplemented with <i>Carnobacterium maltaromaticum</i> Environmental Probiotic Bacteria on the Rearing Parameters and Microbial Safety of Juvenile Rainbow Trout Animals juvenile rainbow trout commercial feed rearing parameters apparent digestibility of nutrients <i>C. maltaromaticum</i> environmental probiotic isolate potentially pathogenic bacteria in the digestive tract and skin of the fish |
| title | The Influence of Commercial Feed Supplemented with <i>Carnobacterium maltaromaticum</i> Environmental Probiotic Bacteria on the Rearing Parameters and Microbial Safety of Juvenile Rainbow Trout |
| title_full | The Influence of Commercial Feed Supplemented with <i>Carnobacterium maltaromaticum</i> Environmental Probiotic Bacteria on the Rearing Parameters and Microbial Safety of Juvenile Rainbow Trout |
| title_fullStr | The Influence of Commercial Feed Supplemented with <i>Carnobacterium maltaromaticum</i> Environmental Probiotic Bacteria on the Rearing Parameters and Microbial Safety of Juvenile Rainbow Trout |
| title_full_unstemmed | The Influence of Commercial Feed Supplemented with <i>Carnobacterium maltaromaticum</i> Environmental Probiotic Bacteria on the Rearing Parameters and Microbial Safety of Juvenile Rainbow Trout |
| title_short | The Influence of Commercial Feed Supplemented with <i>Carnobacterium maltaromaticum</i> Environmental Probiotic Bacteria on the Rearing Parameters and Microbial Safety of Juvenile Rainbow Trout |
| title_sort | influence of commercial feed supplemented with i carnobacterium maltaromaticum i environmental probiotic bacteria on the rearing parameters and microbial safety of juvenile rainbow trout |
| topic | juvenile rainbow trout commercial feed rearing parameters apparent digestibility of nutrients <i>C. maltaromaticum</i> environmental probiotic isolate potentially pathogenic bacteria in the digestive tract and skin of the fish |
| url | https://www.mdpi.com/2076-2615/12/23/3321 |
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