Performance of juveniles of Pseudoplatystoma fasciatum fed graded levels of corn gluten meal

Pesquisa Agropecuária Brasileira

Álvaro José De Almeida Bicudo²  Ricardo Borghesi¹  Jony Koji Dairiki¹  Ricardo Yuji Sado¹  José Eurico Possebon Cyrino¹ 

[1] ,Universidade Federal Rural de PernambucoGaranhuns PE ,Brazil

关键词: alternative protein source;    carnivorous fish;    fish nutrition;    neotropical species;    plant protein sources;    striped catfish;    fontes proteicas alternativas;    peixes carnívoros;    nutrição de peixes;    espécie neotropical;    fontes proteicas vegetais;    cachara;   

DOI  :  10.1590/S0100-204X2012000600015

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate corn gluten meal (CGM) as a substitute for fish meal in diets for striped catfish (Pseudoplatystoma fasciatum) juveniles. Eight isonitrogenous (46% crude protein) and isoenergetic (3,450 kcal kg-1 digestible energy) diets, with increasing levels of CGM - 0, 6, 12, 18, 24, 30, 36, and 42% -, were fed to juvenile striped catfish (113.56±5.10 g) for seven weeks. Maximum values for weight gain, specific growth rate, protein efficiency ratio and feed conversion ratio, evaluated by polynomial quadratic regression, were observed with 10.4, 11.4, 15.4 and 15% of CGM inclusion, respectively. Feed intake decreased significantly from 0.8% CGM. Mesenteric fat index and body gross energy decreased linearly with increasing levels of CGM; minimum body protein contents were observed with 34.1% CGM. Yellow pigmentation of fillets significantly increased until 26.5% CGM, and decreased from this point forth. Both plasma glucose and protein concentrations decreased with increased CGM levels. The inclusion of 10-15% CGM promotes optimum of striped catfish juveniles depending on the parameter evaluated. Yellow coloration in fillets produced by CGM diets can have marketing implications.

【 授权许可】

CC BY   
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