Substitution of a high percentage of fishmeal for silages of fishery by-products in extruded diets for Clarias gariepinus
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Instituto de Ciencia Animal
2021
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| _version_ | 1876440370783453184 |
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| author | J. Llanes |
| author_facet | J. Llanes |
| contents | Substitution of a high percentage of fishmeal for silages of fishery by-products in extruded diets for Clarias gariepinus J. Llanes Giuliana Parisi Estudios Agrarios Acids feeding catfish chemical silos A total of 270 fingerlings (10.7 ± 0.06 g of average weight) were randomly distributed in three treatments with three repetitions, according to a completely randomized design, to evaluate the total substitution of a high fishmeal percentage for silages of fishery by-products in extruded diets for Clarias gariepinus. The treatments were catfish fingerling feed with 25% of fish meal (control) and two alternative diets, with 10% (dry basis) of silage: one prepared with 98% of sulfuric acid, and the other with formic acid. Animals were fed for 60 d. No differences were found (P> 0.05) in the final weights (66.63, 66.27 and 70.71 g) and food conversion (1.18, 1.18 and 1.15). However, there were differences for protein efficiency between the diet with fishmeal (2.34) and the silage of fishery products (3.09 and 3.18). Survival was excellent in all treatments (> 96.66%). The economic analysis showed that the profits with silage (US $ 2,534.22 and 2,430.05/t) were superior to control (US $ 1,689.44/t). It is concluded that chemical silages of fishery by-products can replace a high percentage of fishmeal in extruded diets for Clarias gariepinus fingerlings with a positive economic effect, by reducing the importation of fishmeal. 2021 artículo científico 0864-0408 https://www.redalyc.org/articulo.oa?id=653769345003 https://www.redalyc.org/journal/6537/653769345003/ https://www.redalyc.org/journal/6537/653769345003/html/ https://www.redalyc.org/journal/6537/653769345003/653769345003.epub https://www.redalyc.org/journal/6537/653769345003/movil en http://www.redalyc.org/revista.oa?id=6537 Cuban Journal of Agricultural Science application/pdf Instituto de Ciencia Animal Cuban Journal of Agricultural Science (Cuba) Num.2 Vol.55 |
| format | Artículo científico |
| id | redalyc_653769345003 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | Instituto de Ciencia Animal |
| spellingShingle | Substitution of a high percentage of fishmeal for silages of fishery by-products in extruded diets for Clarias gariepinus J. Llanes Estudios Agrarios Acids feeding catfish chemical silos Substitution of a high percentage of fishmeal for silages of fishery by-products in extruded diets for Clarias gariepinus J. Llanes Giuliana Parisi Estudios Agrarios Acids feeding catfish chemical silos A total of 270 fingerlings (10.7 ± 0.06 g of average weight) were randomly distributed in three treatments with three repetitions, according to a completely randomized design, to evaluate the total substitution of a high fishmeal percentage for silages of fishery by-products in extruded diets for Clarias gariepinus. The treatments were catfish fingerling feed with 25% of fish meal (control) and two alternative diets, with 10% (dry basis) of silage: one prepared with 98% of sulfuric acid, and the other with formic acid. Animals were fed for 60 d. No differences were found (P> 0.05) in the final weights (66.63, 66.27 and 70.71 g) and food conversion (1.18, 1.18 and 1.15). However, there were differences for protein efficiency between the diet with fishmeal (2.34) and the silage of fishery products (3.09 and 3.18). Survival was excellent in all treatments (> 96.66%). The economic analysis showed that the profits with silage (US $ 2,534.22 and 2,430.05/t) were superior to control (US $ 1,689.44/t). It is concluded that chemical silages of fishery by-products can replace a high percentage of fishmeal in extruded diets for Clarias gariepinus fingerlings with a positive economic effect, by reducing the importation of fishmeal. 2021 artículo científico 0864-0408 https://www.redalyc.org/articulo.oa?id=653769345003 https://www.redalyc.org/journal/6537/653769345003/ https://www.redalyc.org/journal/6537/653769345003/html/ https://www.redalyc.org/journal/6537/653769345003/653769345003.epub https://www.redalyc.org/journal/6537/653769345003/movil en http://www.redalyc.org/revista.oa?id=6537 Cuban Journal of Agricultural Science application/pdf Instituto de Ciencia Animal Cuban Journal of Agricultural Science (Cuba) Num.2 Vol.55 |
| title | Substitution of a high percentage of fishmeal for silages of fishery by-products in extruded diets for Clarias gariepinus |
| topic | Estudios Agrarios Acids feeding catfish chemical silos |
| url | https://www.redalyc.org/articulo.oa?id=653769345003 https://www.redalyc.org/journal/6537/653769345003/ https://www.redalyc.org/journal/6537/653769345003/html/ https://www.redalyc.org/journal/6537/653769345003/653769345003.epub https://www.redalyc.org/journal/6537/653769345003/movil |