Productive performance and digestibility in the initial growth phase of tambaqui (Colossoma macropomum) fed diets with different carbohydrate and lipid levels

Author(s)

Sandre, L. C. G. ^[1] ; Buzollo, H. ^[1] ; Nascimento, T. M. T. ^[1] ; Neira, L. M. ^[1] ; Jomori, R. K. ^[2] ; Carneiro, D. J. ^[1]

Affiliation

^[1] Univ Estadual Paulista, UNESP, BR-14884900 Sao Paulo - Brazil

^[2] Fundacao Educ, Fac Dr Francisco Maeda, Lab Aquicultura, BR-14500000 Sao Paulo - Brazil

• Document type: Journal article
• Source: AQUACULTURE REPORTS; v. 6, p. 28-34, MAY 2017.
• Web of Science Citations: 3

Abstract

The use of dietary protein can be optimized by increasing diet energy, which can be achieved by adding non-protein nutrients such as carbohydrates and lipids. If incorporated in suitable amounts, these items can promote the protein sparing effect, reducing nitrogen excretion and improving the quality of fish farming effluents. The study assessed productive performance, body composition, nutrient and energy retention efficiency and digestibility of the omnivorous fish tambaqui (Co lossoma macropomum) fed diets with three carbohydrate (410, 460 and 510 gkg(-1)) and two lipid levels (40 and 80 g kg(-1)) in the initial growth phase (juvenile weighing between 10 and 250 g). The experiment was completely randomized, with six treatments and four replicas arranged in a 3 x 2 factorial design. The 1080 tambaqui tested (10.88 +/- 0.13 g body weight) were randomly distributed into 24 tanks (500 L; 45 fish/tank) and fed the test diets for 120 days. The highest carbohydrate inclusion (510 g kg(-1)) reduced food intake and fish growth. A protein sparing effect was observed in the growth of tambaqui fed 460 g kg(-1) carbohydrates since they showed higher weight gain, protein efficiency ratio, protein productive value and crude protein participation in weight gain. The increase in lipid levels from 40 g kg(-1) to 80 g kg(-1) increased body fat deposition and decreased the digestibility coefficients of diet nutrients and diet energy. The results demonstrate that the ideal balanced diet to grow juvenile tambaqui is 460 g kg(-1) carbohydrates and 40 g kg(-1) lipids. (C) 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (AU)

• FAPESP's process: 12/15656-6 - Levels of carbohydrates and lipids in diets for tambaqui juveniles (Colossoma macropomum) and isotopic turnover of carbon-13 and deuterium-2
• Grantee: Lidiane Cristina Gonçalves de Sandre
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 13/00254-2 - Levels of carbohydrates and lipids in diets for tambaqui juveniles (Colossoma macropomum) and isotopic turnover of carbon-13 and deuterium-2
• Grantee: Dalton José Carneiro
• Support Opportunities: Regular Research Grants