Arginine requirement of male broiler chicks in different phases of development

Revista Brasileira de Zootecnia

Rostagno, Horacio Santiago²  Vieites, Flávio Medeiros¹  Carvalho, Débora Cristine de Oliveira²  Albino, Luiz Fernando Teixeira²  Pupa, Júlio Maria Ribeiro¹  Atencio, Anel¹ 

[1] UFV

关键词: amino acid;    arginine;    broilers;    requirement    IntroduçãoNo passado;    as dietas para aves eram formuladas com base na proteína bruta;    o que podia resultar em grandes perdas energéticas e econômicas;    principalmente quando ocorriam desbalanços na relação dos aminoácidos;   

DOI  :  10.1590/S1516-35982004000600012

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

Three experiments were conducted to determine the arginine requirement and the digestible arginine:lysine ratio of broiler males, from 1 to 20, 24 to 38 and 44 to 56 days of age. A completely randomized design with five levels of arginine, six replicates and 20 birds per pens from 1 to 20 and 24 to 38, and 16 birds per pens from 44 to 56 were used in each experiment. The concentrations of digestible arginine were 1.10-1.34 (increase of 0,061), 1.083-1.296 (increase of 0,053) and 0,96-1,148% (increase of 0,047) for 1-20, 24-38 and 44-56 days of age respectively. At the end of each experiment performance and carcass yield were evaluated. Body weight gain and feed conversion responded quadratically to increasing levels of digestible arginine in the first phase. Using the broken line model, the requirement of digestible arginine and the ratio of digestible arginine:lysine for the first phase were 1,22% (1,31% total) and 105%, respectively, according to the results of body weight gain. No statistical difference in the second and third phases (24-38 days old and 44-56 days old, respectively) showed that the lowest level of digestible arginine of 1,083% (1,155% total) and 0,960% (1,026) met the birds requirement. These levels corresponded to a ratio of 102% in both phases.

【 授权许可】

CC BY-NC