Growth performance of piauçu (Leporinus macrocephalus) fed diets with different levels of tannin

Revista Brasileira de Zootecnia

Barros, Margarida Maria²  Pezzato, Luiz Edivaldo²  Pinto, Luis Gabriel Quintero³  Miranda, Edma Carvalho de¹ 

[1]UFAL, Maceió

[2]UNESP

[3]UNAL, Bogotá, Colômbia

关键词: barbatimão;    growth performance;    Leporinus macrocephalus;    piauçu;    tannin     IntroduçãoOs taninos são polifenóis de estruturas químicas diversas;    com peso molecular entre 500 e 4000 g/mol e com capacidade de se ligar com as proteínas e outros polímeros;    característica que os define como substâncias antinutricionais endógenas (LIENER;    1980;    MUELLER-HARVEY e MCALLAN;    1992;    WARREHAM et al;   

DOI  :  10.1590/S1516-35982001000500005

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- This experiment was undertaken to evaluate the effect of dietary tannin on growth performance and carcass composition of piauçu, for sixty days. Twenty one aquaria (80 L) were supplied with dechlorinated tap-water (1 L/min) in a closed system. Water quality was controled by biologic filter and heater. Fish, with inicial average weight 5.06 g, in a triplicate aquaria, were randomly assigned to each of 7 treatments. Experimental diets were formulated to contain approximately 3,200 kcal of digestible energy, 30% crude protein and 0.0, 0.23, 0.46, 0.69, 0.92, 1.37 and 1.82% of total tannin. Although 0.69% of tannin added did not affected apparent feed conversion and protein efficiency ratio, concentrations equal or higher than 0.46% resulted lower weight gain. Piauçu was sensitive to condensed tannin which had significant harmful effect on metabolism and biological value of dietary nutrients.

【 授权许可】

CC BY-NC