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

Pesquisa Agropecuária Brasileira

Marcio Quara De Carvalho Santos²  Mariana Do Amaral Camara Lima²  Luciana Dos Santos²  Manoel Pereira-filho²  Eduardo Akifumi Ono¹  Elizabeth Gusmão Affonso² 

[1] ,Instituto Nacional de Pesquisas da Amazônia Coordenação de Tecnologia e Inovação Manaus AM ,Brazil

关键词: Colossoma macropomum;    blood parameters;    energy;    food restriction;    Colossoma macropomum;    parâmetros sanguíneos;    exigência energia;    restrição alimentar;   

DOI  :  10.1590/S0100-204X2013000800021

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
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