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Lipid requirement of bay snook (Petenia splendida Günther, 1862) juveniles
URIEL RODRIGUEZ ESTRADA
OTILIO MENDEZ MARIN
ALFREDO PEREZ MORALES
RAFAEL MARTINEZ GARCIA
Emyr Peña
ROBERTO CIVERA CERECEDO
ERNESTO GOYTORTUA BORES
Carlos Alfonso Álvarez González
Acceso Abierto
Atribución-NoComercial-SinDerivadas
DOI: 10.3856/vol48-issue4-fulltext-2429
ISSN: 0718-560X
URL: http://lajar.ucv.cl/index.php/rlajar/article/view/vol48-issue4-fulltext-2429
Petenia splendida, bay snook, diet, lipid requirement, aquaculture
"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."
Pontificia Universidad Católica de Valparaíso
2020
Artículo
Latin American Journal of Aquatic Research
Inglés
PISCICULTURA
Versión publicada
publishedVersion - Versión publicada
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