Energy and lysine for broilers from 44 to 55 days of age


Autoria(s): Araújo, LF; Junqueira, Otto Mack; Araújo, CSS; Barbosa, LCGS; Ortolan, JH; Faria, DE; Stringhini, JH
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/12/2005

Resumo

An experiment was conducted to evaluate the performance and carcass yield of broilers at 55 days of age fed diets with different levels of metabolizable energy and lysine. Evaluated data of performance were weight gain, feed intake, energy intake, lysine intake, caloric conversion and feed conversion. Carcass assessment was performed based on data from carcass yield, breast weight, whole wings, whole legs, back, head + neck, feet and abdominal fat. A 3 x 3 factorial arrangement was used, with 3 levels of metabolizable energy (3,200; 3,400 and 3,600 kcal ME/kg) and 3 lysine levels (0.95%; 1.05% and 1.15%). There was no interaction between the two factors. Nevertheless, increasing levels of metabolizable energy improved weight gain (745 g; 841 g and 910 g, respectively) and feed intake was higher in broilers receiving the diets with 3,200 and 3,600 kcal ME/kg. Overall performance was not affected by lysine levels. Feed conversion values were 2.69, 2.42 and 2.14 for birds fed diets with 3,200; 3,400 and 3,600 kcal ME/kg, respectively. Carcass yield and breast weight increased with higher levels of energy and lysine in the diets.

Formato

237-241

Identificador

http://dx.doi.org/10.1590/S1516-635X2005000400007

Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 7, n. 4, p. 237-241, 2005.

1516-635X

http://hdl.handle.net/11449/4445

10.1590/S1516-635X2005000400007

S1516-635X2005000400007

S1516-635X2005000400007.pdf

Idioma(s)

eng

Publicador

Fundação APINCO de Ciência e Tecnologia Avícolas

Relação

Revista Brasileira de Ciência Avícola

Direitos

openAccess

Palavras-Chave #Broilers #lysine #Metabolizable energy #Performance
Tipo

info:eu-repo/semantics/article