Optimal Standardized Ileal Digestible Arginine to Lysine Ratio for Japanese Quails in the Egg-Laying Phase

• Autor(a) principal: Tuesta,GMR
• Data de Publicação: 2018
• Outros Autores: Viana,GS, Barreto,SLT, Muniz,JCL, Reis,RS, Mencalha,R, Hannas,MI
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Journal of Poultry Science (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200351
• topic: Coturnix coturnix japonica; digestible amino acids; ideal protein

ABSTRACT This study was conducted to determine the optimal standardized ileal digestible arginine to lysine (SID Arg:Lys) ratio for Japanese quails in the egg-laying phase. A total of two hundred forty-five 35-week-old Japanese quails (181 ± 1.30 g initial body weight) were randomly assigned to five treatment groups with seven replicates of seven quails. Graded levels of L-Arginine were added to a basal diet in order to produce five SID Arg:Lys ratios (101, 106, 111, 116 and 121%). Collected data were analyzed as one-way ANOVA and optimal ratio was estimated using polynomial regression model (linear and quadratic) based on performance traits. Statistical differences were considered for p<0.05. Graded SID Arg:Lys ratios did not affect performance traits assessed. Based on results, the SID Arg:Lys ratio of 101% is sufficient to warrant proper performance of Japanese quails in the egg-laying phase.