Tenebrio molitor meal in rainbow trout (Oncorhynchus mykiss) diets: effects on animal performance, nutrient digestibility and chemical composition of fillets
This study evaluated the effects of diets containing Tenebrio molitor (TM) larvae meal on growth performances, somatic indexes, nutrient digestibility, dorsal muscle proximate and fatty acid (FA) compositions of rainbow trout. Three hundred sixty fish were randomly divided into three groups with fou...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2015-12-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/4170 |
| _version_ | 1819266709698117632 |
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| author | Marco Belforti Francesco Gai Carola Lussiana Manuela Renna Vanda Malfatto Luca Rotolo Michele De Marco Sihem Dabbou Achille Schiavone Ivo Zoccarato Laura Gasco |
| author_facet | Marco Belforti Francesco Gai Carola Lussiana Manuela Renna Vanda Malfatto Luca Rotolo Michele De Marco Sihem Dabbou Achille Schiavone Ivo Zoccarato Laura Gasco |
| author_sort | Marco Belforti |
| collection | DOAJ |
| description | This study evaluated the effects of diets containing Tenebrio molitor (TM) larvae meal on growth performances, somatic indexes, nutrient digestibility, dorsal muscle proximate and fatty acid (FA) compositions of rainbow trout. Three hundred sixty fish were randomly divided into three groups with four replicates each. The groups were fed diets differing in TM inclusion: 0% (TM0), 25% (TM25) and 50% (TM50) as fed weight basis. Weight gain was not affected by treatment. Feeding rate was significantly higher in TM0 than TM50. Feed conversion ratio was significantly higher in TM0 than TM25 and TM50, while an opposite trend was observed for protein efficiency ratio and specific growth rate. The survival rate was significantly lower in TM0 than TM25 and TM50. The apparent digestibility of protein was significantly lower in the TM50 group than the other groups, while the apparent digestibility of dry matter, organic matter and lipids was unaffected by treatment. If compared to control, the protein and lipid contents of fillets were respectively increased and decreased following TM inclusion in the diet. The Σn3/Σn6 FA ratio of fish dorsal muscle was linearly (TM0>TM25>TM50) reduced by TM inclusion in the diet. Results suggested that TM could be used during the growing phase in trout farming; however, additional studies on specific feeding strategies and diet formulations are needed to limit its negative effects on the lipid fraction of fillets. |
| first_indexed | 2024-12-23T21:05:35Z |
| format | Article |
| id | doaj.art-1f8af31bd0b14f0aa0d38ecb2972b897 |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-12-23T21:05:35Z |
| publishDate | 2015-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-1f8af31bd0b14f0aa0d38ecb2972b8972022-12-21T17:31:14ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2015-12-0114410.4081/ijas.2015.41702425Tenebrio molitor meal in rainbow trout (Oncorhynchus mykiss) diets: effects on animal performance, nutrient digestibility and chemical composition of filletsMarco Belforti0Francesco Gai1Carola Lussiana2Manuela Renna3Vanda Malfatto4Luca Rotolo5Michele De Marco6Sihem Dabbou7Achille Schiavone8Ivo Zoccarato9Laura Gasco10Dipartimento di Scienze Agrarie, Forestali e Alimentari, University of TurinIstituto di Scienze delle Produzioni Alimentari, National Research Council, TurinDipartimento di Scienze Agrarie, Forestali e Alimentari, University of TurinDipartimento di Scienze Agrarie, Forestali e Alimentari, University of TurinDipartimento di Scienze Agrarie, Forestali e Alimentari, University of TurinDipartimento di Scienze Agrarie, Forestali e Alimentari, University of TurinDipartimento di Scienze Veterinarie, University of TurinDipartimento di Scienze Agrarie, Forestali e Alimentari, University of TurinDipartimento di Scienze Veterinarie, University of TurinDipartimento di Scienze Agrarie, Forestali e Alimentari, University of TurinDipartimento di Scienze Agrarie, Forestali e Alimentari, University of Turin; Istituto di Scienze delle Produzioni Alimentari, National Research Council, TurinThis study evaluated the effects of diets containing Tenebrio molitor (TM) larvae meal on growth performances, somatic indexes, nutrient digestibility, dorsal muscle proximate and fatty acid (FA) compositions of rainbow trout. Three hundred sixty fish were randomly divided into three groups with four replicates each. The groups were fed diets differing in TM inclusion: 0% (TM0), 25% (TM25) and 50% (TM50) as fed weight basis. Weight gain was not affected by treatment. Feeding rate was significantly higher in TM0 than TM50. Feed conversion ratio was significantly higher in TM0 than TM25 and TM50, while an opposite trend was observed for protein efficiency ratio and specific growth rate. The survival rate was significantly lower in TM0 than TM25 and TM50. The apparent digestibility of protein was significantly lower in the TM50 group than the other groups, while the apparent digestibility of dry matter, organic matter and lipids was unaffected by treatment. If compared to control, the protein and lipid contents of fillets were respectively increased and decreased following TM inclusion in the diet. The Σn3/Σn6 FA ratio of fish dorsal muscle was linearly (TM0>TM25>TM50) reduced by TM inclusion in the diet. Results suggested that TM could be used during the growing phase in trout farming; however, additional studies on specific feeding strategies and diet formulations are needed to limit its negative effects on the lipid fraction of fillets.http://www.aspajournal.it/index.php/ijas/article/view/4170Insect mealMealwormRainbow troutGrowth performanceDorsal muscle composition |
| spellingShingle | Marco Belforti Francesco Gai Carola Lussiana Manuela Renna Vanda Malfatto Luca Rotolo Michele De Marco Sihem Dabbou Achille Schiavone Ivo Zoccarato Laura Gasco Tenebrio molitor meal in rainbow trout (Oncorhynchus mykiss) diets: effects on animal performance, nutrient digestibility and chemical composition of fillets Italian Journal of Animal Science Insect meal Mealworm Rainbow trout Growth performance Dorsal muscle composition |
| title | Tenebrio molitor meal in rainbow trout (Oncorhynchus mykiss) diets: effects on animal performance, nutrient digestibility and chemical composition of fillets |
| title_full | Tenebrio molitor meal in rainbow trout (Oncorhynchus mykiss) diets: effects on animal performance, nutrient digestibility and chemical composition of fillets |
| title_fullStr | Tenebrio molitor meal in rainbow trout (Oncorhynchus mykiss) diets: effects on animal performance, nutrient digestibility and chemical composition of fillets |
| title_full_unstemmed | Tenebrio molitor meal in rainbow trout (Oncorhynchus mykiss) diets: effects on animal performance, nutrient digestibility and chemical composition of fillets |
| title_short | Tenebrio molitor meal in rainbow trout (Oncorhynchus mykiss) diets: effects on animal performance, nutrient digestibility and chemical composition of fillets |
| title_sort | tenebrio molitor meal in rainbow trout oncorhynchus mykiss diets effects on animal performance nutrient digestibility and chemical composition of fillets |
| topic | Insect meal Mealworm Rainbow trout Growth performance Dorsal muscle composition |
| url | http://www.aspajournal.it/index.php/ijas/article/view/4170 |
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