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

• Autor(a) principal: Tuesta, G. M. R.
• Data de Publicação: 2018
• Outros Autores: Viana, G. S. [UNESP], Barreto, S. L. T., Muniz, J. C. L., Reis, R. S., Mencalha, I. R., Hannas, M.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/1806-9061-2017-0554; http://hdl.handle.net/11449/160467
• topic: Coturnix coturnix japonica; digestible amino acids; ideal protein

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-weekold 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 AN OVA 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.