<i>Aurantiochytrium</i> sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature
<i>Aurantiochytrium</i> sp. is a heterotrophic microorganism that produces docosahexaenoic acid (DHA), thus being considered as a possible replacement for fish oil in aquafeeds. We investigated the effect of <i>Aurantiochytrium </i>sp. meal (AM) dietary levels (0, 5, 10, 20,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Fishes |
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| Online Access: | https://www.mdpi.com/2410-3888/6/4/45 |
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| author | Rosana Oliveira Batista Renata Oselame Nobrega Delano Dias Schleder James Eugene Pettigrew Débora Machado Fracalossi |
| author_facet | Rosana Oliveira Batista Renata Oselame Nobrega Delano Dias Schleder James Eugene Pettigrew Débora Machado Fracalossi |
| author_sort | Rosana Oliveira Batista |
| collection | DOAJ |
| description | <i>Aurantiochytrium</i> sp. is a heterotrophic microorganism that produces docosahexaenoic acid (DHA), thus being considered as a possible replacement for fish oil in aquafeeds. We investigated the effect of <i>Aurantiochytrium </i>sp. meal (AM) dietary levels (0, 5, 10, 20, and 40 g kg<sup>−1</sup>) on Nile tilapia body and hepatopancreas fatty acid (FA) profile, body FA retention, somatic indices, and morphophysiological changes in the intestine and hepatopancreas, after feeding Nile tilapia juveniles (average initial weight 8.47 g) for 87 days at 22 °C. The 10AM diet was compared to a control diet containing cod liver oil (CLO), since their DHA concentration was similar. Within fish fed diets containing increasing levels of AM, there was a linear increase in n-3 FA content, especially DHA, which varied in the body (0.02 to 0.41 g 100 g<sup>−1</sup>) and hepatopancreas (0.15 to 1.05 g 100 g<sup>−1</sup>). The morphology of the intestines and hepatopancreas was positively affected in AM-fed fish. Fish fed 10AM showed less accumulation of n-3 FAs in the body and hepatopancreas when compared to fish fed CLO. Therefore, AM is an adequate substitute for fish oil in winter diets for Nile tilapia, with the supplementation of 40AM promoting the best results regarding intestine and hepatopancreas morphophysiology. |
| first_indexed | 2024-03-10T04:09:45Z |
| format | Article |
| id | doaj.art-fef76a308da94a7cbdeb0fd87d32330c |
| institution | Directory Open Access Journal |
| issn | 2410-3888 |
| language | English |
| last_indexed | 2024-03-10T04:09:45Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fishes |
| spelling | doaj.art-fef76a308da94a7cbdeb0fd87d32330c2023-11-23T08:14:44ZengMDPI AGFishes2410-38882021-10-01644510.3390/fishes6040045<i>Aurantiochytrium</i> sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low TemperatureRosana Oliveira Batista0Renata Oselame Nobrega1Delano Dias Schleder2James Eugene Pettigrew3Débora Machado Fracalossi4Departamento de Aquicultura, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88034-001, SC, BrazilDepartamento de Aquicultura, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88034-001, SC, BrazilDepartamento de Medicina Veterinária, Instituto Federal Catarinense, Campus Araquari, Araquari 89245-000, SC, BrazilPettigrew Research Services, Tubac, AZ 85646, USADepartamento de Aquicultura, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88034-001, SC, Brazil<i>Aurantiochytrium</i> sp. is a heterotrophic microorganism that produces docosahexaenoic acid (DHA), thus being considered as a possible replacement for fish oil in aquafeeds. We investigated the effect of <i>Aurantiochytrium </i>sp. meal (AM) dietary levels (0, 5, 10, 20, and 40 g kg<sup>−1</sup>) on Nile tilapia body and hepatopancreas fatty acid (FA) profile, body FA retention, somatic indices, and morphophysiological changes in the intestine and hepatopancreas, after feeding Nile tilapia juveniles (average initial weight 8.47 g) for 87 days at 22 °C. The 10AM diet was compared to a control diet containing cod liver oil (CLO), since their DHA concentration was similar. Within fish fed diets containing increasing levels of AM, there was a linear increase in n-3 FA content, especially DHA, which varied in the body (0.02 to 0.41 g 100 g<sup>−1</sup>) and hepatopancreas (0.15 to 1.05 g 100 g<sup>−1</sup>). The morphology of the intestines and hepatopancreas was positively affected in AM-fed fish. Fish fed 10AM showed less accumulation of n-3 FAs in the body and hepatopancreas when compared to fish fed CLO. Therefore, AM is an adequate substitute for fish oil in winter diets for Nile tilapia, with the supplementation of 40AM promoting the best results regarding intestine and hepatopancreas morphophysiology.https://www.mdpi.com/2410-3888/6/4/45<i>Aurantiochytrium</i> sp.docosahexaenoic acidhistology<i>Oreochromis niloticus</i>physiologytemperature |
| spellingShingle | Rosana Oliveira Batista Renata Oselame Nobrega Delano Dias Schleder James Eugene Pettigrew Débora Machado Fracalossi <i>Aurantiochytrium</i> sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature Fishes <i>Aurantiochytrium</i> sp. docosahexaenoic acid histology <i>Oreochromis niloticus</i> physiology temperature |
| title | <i>Aurantiochytrium</i> sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature |
| title_full | <i>Aurantiochytrium</i> sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature |
| title_fullStr | <i>Aurantiochytrium</i> sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature |
| title_full_unstemmed | <i>Aurantiochytrium</i> sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature |
| title_short | <i>Aurantiochytrium</i> sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature |
| title_sort | i aurantiochytrium i sp meal improved body fatty acid profile and morphophysiology in nile tilapia reared at low temperature |
| topic | <i>Aurantiochytrium</i> sp. docosahexaenoic acid histology <i>Oreochromis niloticus</i> physiology temperature |
| url | https://www.mdpi.com/2410-3888/6/4/45 |
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