Energy metabolism in juvenile pacu fed diets containing different levels of protein and carbohydrates

• Grant number: 11/15187-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2011
• End date: June 30, 2013
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal Investigator: Leonardo Susumu Takahashi
• Grantee: Mayara de Moura Pereira
• Host Institution: Universidade Estadual Paulista (UNESP). Campus Experimental de Dracena. Dracena , SP, Brazil
• Associated scholarship(s): 12/18117-9 - Activity of hepatic glucokinase, pyruvate kinase and fructose-1 ,6-bisphosphate in pacu (Piaractus mesopotamicus) fed different levels of protein and carbohydrate, BE.EP.IC

Abstract

The appropriate carbohydrates inclusion and protein sparing effect on fish diets can lead to a reduction about 70% of cost production and the reduction in nitrogen excretion. So, many studies should be done to verify the protein-sparing effects and animal answers. Carbohydrate leads dietary protein targeting mainly for growth. In this sense, pacu (Piaractus mesopotamicus) represents an interesting biological model, since it is a frugivorous animal, allowing a better utilization of carbohydrates. The proposal aims to evaluate sub-optimal levels of protein with increasing levels of carbohydrates to analyze the protein-sparing effect, through the dynamics of energy reserves tissue profile of metabolites in blood and activity of amylase and glucokinase. The experiment will be conducted in a completely randomized design with six treatments (23:40, 19:45, 19:52, 21:38, 21:45, and 21:52% PD:% CHO) and four repetitions. The results will be submitted to analysis of variance (ANOVA), and the averages compared by Tukey test (5%) through the statistical program SAS, version 9.0. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PEREIRA, MAYARA DE MOURA; NAGATA, MARIANA MIDORI; ENES, PAULA; OLIVA-TELES, AIRES; URBINATI, ELISABETH CRISCUOLO; TAKAHASHI, LEONARDO SUSUMU. Growth performance and metabolic responses to dietary protein/carbohydrate ratios in pacu (Piaractus mesopotamicus) juveniles. AQUACULTURE RESEARCH, v. 51, n. 12, p. 5203-5211, DEC 2020. (11/15187-3, 10/17755-6, 10/15844-1)