Dietary vitamin A requirement for dourado (Salminus brasiliensis) e pacu (Piaractus mesopotamicus)

• Grant number: 13/17932-3
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: November 01, 2013
• End date: October 31, 2016
• Field of knowledge: Agronomical Sciences - Fishery Resources and Fishery Engineering - Aquaculture
• Principal Investigator: José Eurico Possebon Cyrino
• Grantee: João Fernando Albers Koch
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Associated scholarship(s): 14/19810-5 - Effects of dietary vitamin A supplementation on growth performance, non-specific immune responses, and survival after Ichthyophthirius multifilis challenge in juvenile Largemouth bass (Micropterus salmoides) fed practical animal-based and plant-based diets, BE.EP.PD

Abstract

The animals need a continuous supply of nutrients to meet their nutritional requirements, so that they can express their full potential and stay healthy against stressors agents that they are submitted during the production process. Even now, studies about nutritional requirements in fish contemplated the evaluation of grow performance parameters resulting of protein and energy levels in the diet. However, given the complex interactions of nutrients with the ecophysiology and the healthiness of the various species, the study of mineral and vitamin requirements, which besides having specific functions in the body are responsible for the regulation of growth and modulation of the immune system and physiological homeostasis , it began the attention from the research community. The Neotropical Characiformes dourado (Salminus brasiliensis) and pacu (Piaractus mesopotamicus) have been prominent on the national scene due to the productive potential, excellent quality and high value of its meat. This project aims to determine the requirement of vitamin A for the listed species from: (i) the analysis of the growth performance, hematology and immune system modulation before and after challenge with Aeromonas hydrophila strain pathological, (ii) the determination of the bromatological-carcass chemical composition , (iii) analyzes of computerized tomography and bone densitometry, and (iv) quantification of deposits of vitamin A in the liver lipid matrix of animals fed purified diets containing increasing levels of provitamin A in form of retinyl acetate.

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)

ALBERS KOCH, JOAO FERNANDO; SABIONI, RAFAEL ESTEVAN; AGUILAR AGUILAR, FREDY ARMANDO; LORENZ, EVANDRO KLEBER; POSSEBON CYRINO, JOSE EURICO. Vitamin A requirements of dourado (Salminus brasiliensis): Growth performance and immunological parameters. Aquaculture, v. 491, p. 86-93, APR 1 2018. (13/17932-3)