Growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) grown in seawater and freshwater
In a comparative study using the hybrid tilapia Oreochromis mossambicus × Oreochromis aureus grown in seawater and freshwater, no significant differences in growth performance (weight gain) and biological indices (e.g., feed conversion efficiency and survival) was observed after 90 days of experimen...
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Iniversidad Autónoma de Baja California
2015
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In a comparative study using the hybrid tilapia Oreochromis mossambicus × Oreochromis aureus grown in seawater and freshwater, no significant differences in growth performance (weight gain) and biological indices (e.g., feed conversion efficiency and survival) was observed after 90 days of experimentation. A common feed was formulated to contain 40% crude protein and 8.5% crude fat. Fish meal and poultry by-product meal (50:50) were used as a source of protein in the formulation. The study was conducted using recirculation systems and organisms already adapted to seawater and freshwater with an initial weight of 25.0 ± 0.06 g and 24.70 ± 0.32 g, respectively (four replicates per treatment); at the end of the experiment their final weight was 161.80 ± 12.78 g and 167.60 ± 7.29 g, respectively. The thermal growth coefficient was 0.91 and 0.89 (seawater vs freshwater), and there were no significant differences; however, the apparent digestibility of dry matter as well as per nutrient (protein, lipid, and carbohydrate) was significantly higher for the organisms in the seawater treatment. The digestibility could be associated with greater enzymatic activity in the presence of higher ionic strength. The respirometric study indicated that the O:N ratios were similar for organisms reared in seawater and freshwater, with values of 21 and 18, respectively. This indicates that this strain of tilapia uses a mixture of proteins and lipids as energy substrates. We conclude that this strain of tilapia has the potential to adapt and thrive in a marine environment and that its production practices could be expanded. |
| format |
info:eu-repo/semantics/article |
| author |
Barreto-Curiel, Fernando Durazo, Eduardo Viana, María Teresa |
| spellingShingle |
Barreto-Curiel, Fernando Durazo, Eduardo Viana, María Teresa Growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) grown in seawater and freshwater |
| author_facet |
Barreto-Curiel, Fernando Durazo, Eduardo Viana, María Teresa |
| author_sort |
Barreto-Curiel, Fernando |
| title |
Growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) grown in seawater and freshwater |
| title_short |
Growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) grown in seawater and freshwater |
| title_full |
Growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) grown in seawater and freshwater |
| title_fullStr |
Growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) grown in seawater and freshwater |
| title_full_unstemmed |
Growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) grown in seawater and freshwater |
| title_sort |
growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (oreochromis mossambicus × oreochromis aureus) grown in seawater and freshwater |
| publisher |
Iniversidad Autónoma de Baja California |
| publishDate |
2015 |
| url |
https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2526 |
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1792609725171367936 |
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repositorioinstitucional-20.500.12930-74892023-05-09T14:30:49Z Growth, ammonium excretion, and oxygen consumption of hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) grown in seawater and freshwater Crecimiento, excreción de amonio y consumo de oxígeno de la tilapia híbrida roja (Oreochromis mossambicus × Oreochromis aureus) cultivada en agua de mar y en agua dulce Barreto-Curiel, Fernando Durazo, Eduardo Viana, María Teresa In a comparative study using the hybrid tilapia Oreochromis mossambicus × Oreochromis aureus grown in seawater and freshwater, no significant differences in growth performance (weight gain) and biological indices (e.g., feed conversion efficiency and survival) was observed after 90 days of experimentation. A common feed was formulated to contain 40% crude protein and 8.5% crude fat. Fish meal and poultry by-product meal (50:50) were used as a source of protein in the formulation. The study was conducted using recirculation systems and organisms already adapted to seawater and freshwater with an initial weight of 25.0 ± 0.06 g and 24.70 ± 0.32 g, respectively (four replicates per treatment); at the end of the experiment their final weight was 161.80 ± 12.78 g and 167.60 ± 7.29 g, respectively. The thermal growth coefficient was 0.91 and 0.89 (seawater vs freshwater), and there were no significant differences; however, the apparent digestibility of dry matter as well as per nutrient (protein, lipid, and carbohydrate) was significantly higher for the organisms in the seawater treatment. The digestibility could be associated with greater enzymatic activity in the presence of higher ionic strength. The respirometric study indicated that the O:N ratios were similar for organisms reared in seawater and freshwater, with values of 21 and 18, respectively. This indicates that this strain of tilapia uses a mixture of proteins and lipids as energy substrates. We conclude that this strain of tilapia has the potential to adapt and thrive in a marine environment and that its production practices could be expanded. En un estudio comparativo en el cual se utilizó el híbrido de tilapia Oreochromis mossambicus × Oreochromis aureus cultivado en agua de mar y en agua dulce no se observaron diferencias significativas en el desempeño como crecimiento en peso e índices biológicos (e.g., conversión alimenticia y supervivencia) después de 90 días de experimentación. Se utilizó un alimento común elaborado en el laboratorio que contenía 40% de proteína cruda y 8.5% de grasa cruda. Para la formulación del alimento, se utilizó harina de pescado y harina de subproducto de ave (50:50) como fuente de proteína. El estudio se realizó utilizando sistemas de recirculación y organismos de 25.0 ± 0.06 g y 24.70 ± 0.32 g para los tratamientos de agua de mar y agua dulce, respectivamente, con 4 repeticiones por tratamiento. Al finalizar el experimento los peces alcanzaron un peso de 161.80 ± 12.78 g y 167.60 ± 7.29 g, respectivamente. El coeficiente térmico de crecimiento fue de 0.91 y 0.89 (agua de mar vs agua dulce), y no se observaron diferencias significativas. Sin embargo, la digestibilidad aparente tanto en materia seca como por nutriente (proteína, lípidos y carbohidratos) resultó significativamente mayor para los organismos en agua de mar. La digestibilidad pudiera estar asociada a una mayor actividad enzimática en presencia de una fuerza iónica mayor. El estudio de respirometría indicó que la relación O:N fue similar entre los organismos en agua de mar y los organismos en agua dulce, con valores de 21 y 18, respectivamente. Lo anterior sugiere que esta variedad de tilapia presenta un catabolismo combinado de proteínas y lípidos como sustratos de energía. Se concluye que esta variedad de tilapia puede adaptarse y desarrollarse en un ambiente marino, lo cual puede contribuir a ampliar su forma de producción. 2015-09-22 2021-06-03T03:55:27Z 2021-06-03T03:55:27Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2526 10.7773/cm.v41i3.2526 https://hdl.handle.net/20.500.12930/7489 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2526/1566 Copyright (c) 2015 Ciencias Marinas application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 41 No. 3 (2015); 247-254 Ciencias Marinas; Vol. 41 Núm. 3 (2015); 247-254 2395-9053 0185-3880 |
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