Lipid requirement of bay snook (Petenia splendida Günther, 1862) juveniles
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Rodríguez-Estrada, Uriel [1] ; Méndez-Marín, Otilio ; Pérez-Morales, Alfredo ; Martínez-García, Rafael ; Peña-Marín, Emyr ; Civera-Cerecedo, Roberto ; Goytortua-Bores, E., Ernesto ; Martínez-Yáñez, Rosario ; Alvarez-González, Carlos A.
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[1] Universidad Juárez Autónoma de Tabasco
Universidad Juárez Autónoma de Tabasco
México
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- Localización: Latin American Journal of Aquatic Research, ISSN-e 0718-560X, ISSN 0716-1069, Vol. 48, Nº. 4, 2020, págs. 674-685
- Idioma: inglés
- Enlaces
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Resumen
This research study is focused on the lipid requirements of Petenia splendida (0.65 ± 0.19 g) juveniles. Fish were fed with trout commercial diet (Silver Cup™ - 45% protein and 16% lipids), as control diet - CD (which is usually used to feed this species at commercial scale), and four isoproteic (45% crude protein) diet formulated with different lipid levels (5, 10, 15 and 20%). Diets were administered for 60 days by triplicate per treatment. Our results showed that fish fed with 10, 15 and 20% lipid levels were significantly higher (P < 0.05) in average weight and total length. Same treatments were significantly lower (P < 0.05) in terms of FCR compared to those shown in 5% and CD. However, fish fed 20% lipid level, showed a significant decrease in WG and a significant (P < 0.05) increase in FCR compared to those shown in 15% lipid level. Fish fed with 15% showed the highest weight gain and the lowest FCR compared with the rest of the treatments. Lipid efficiency ratio (LER) showed significant (P < 0.05) differences among experimental groups. Compared to other diets containing lipid levels (5, 10, and 20%) fish fed 15% diet recorded the lowest protein and lipid content in whole body. Additionally, based on second order polynomial regression analysis of WG, it was demonstrated that 16.2% lipid provides an optimal growth for P. splendida.
