Feeding strategies and energy to protein ratio on tambaqui performance and physiology

de Carvalho Santos, MQ, Do Amaral Camara Lima, M ORCID: https://orcid.org/0000-0002-5277-6391, dos Santos, L, Pereira-Filho, M, Ono, EA and Affonso, EG 2013, 'Feeding strategies and energy to protein ratio on tambaqui performance and physiology' , Pesquisa Agropecuária Brasileira, 48 (8) , pp. 955-961.

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Abstract

The objective of this work was to evaluate the effect of feed deprivation and refeeding with diets containing different energy to protein ratios (E/P) on the performance and physiology of juvenile tambaqui (Colossoma macropomum). A 4x2 factorial arrangement with three replicates was used, with four E/P ratios (11.5, 10.5, 9.5, and 8.5 kcal g-1 digestible energy per protein) and two feeding regimens (with and without deprivation), during 60 days. Fish from the food-deprived group were fasted for 14 days and refed from the fifteenth to the sixtieth day, whereas the remaining fish were fed for 60 days. At the end of the experimental period, weight of fish subjected to food deprivation was lower than that of those continuously fed; however, this condition did not influence the physiological parameters analyzed. Tambaqui fed 11.5 kcal g-1 achieved lower final weight than those fed with the other diets, in both regimens. Among the physiological parameters, only plasma protein presented significant increase in fish fed 8.5 kcal g-1, in both feeding regimens, probably due to the higher dietary protein concentration. These results indicate that fish show a partial compensatory growth, and that 10.5 kcal g-1 can be recommended for the diet of juvenile tambaqui.

Item Type: Article
Schools: Schools > School of Environment and Life Sciences
Journal or Publication Title: Pesquisa Agropecuária Brasileira
Publisher: Pesquisa Agropecuária Brasileira
ISSN: 0100-204X
Related URLs:
Funders: Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação de Amparo à Pesquisa do Estado do Amazonas (Fapeam), Instituto Nacional de Pesquisas da Amazônia (Inpa)
Depositing User: Dr Mariana Lima
Date Deposited: 19 Nov 2020 10:38
Last Modified: 19 Nov 2020 10:45
URI: http://usir.salford.ac.uk/id/eprint/58855

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