Produção Nacional
Revisado por pares
Lysine effect on the characterization of fillet, by-products, residues, and morphometry of tambaqui Colossoma macropomum (Cuvier, 1818)
2021; Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso; Volume: 49; Issue: 4 Linguagem: Inglês
10.3856/vol49-issue4-fulltext-2701
ISSN0718-560X
AutoresAriany Rabello da Silva Liebl, Marcelo dos Santos Nascimento, Paulo Henrique Rocha Aride, Jackson Pantoja‐Lima, Márcia Regina Fragoso Machado Bussons, Wilson Massamitu Furuya, Adriano Teixeira de Oliveira,
Tópico(s)Aquaculture disease management and microbiota
ResumoThis study aimed to evaluate the yields of by-products and residues and the morphometry of juvenile tambaqui Colossoma macropomum undernutrition with different levels of lysine. Diets were elaborated containing 6.60, 9.72, 12.84, 15.96, 19.08, and 22.20 g kg -1 of total lysine, and these were fed to fish distributed in 18 tanks (310 L each one) for 90 days. Morphometric analysis, measurements of whole fish, by-products, and residues were taken and compared to each other. All variables were validated using ANOVA, Tukey's test, and quadratic regression analysis ( P < 0.05). No differences were found for the morphometric variables ( P > 0.05). The ratio between morphometric data for the standard and total length showed significance at levels of 9.72 and 15.96 g kg -1 ( P = 0.03). The gutted fish and fillets, the protein and lipid contents of the fillets, and the weights and lengths of the intestines did not change ( P > 0.05). Moisture was modified with lysine at levels of 22.20 g kg -1 ( P = 0.00), and minerals, between 6.60 and 22.20 g kg -1 ( P = 0.01). The increase in lysine levels in the diet led to an increase in fin weight ( P = 0.00). It was concluded that the addition of lysine in the diet did not directly influence the morphometry and yields of the fish in the juvenile phase, but it did affect the fin waste and the skin by-product.
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