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

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摘要 本研究旨在确定产蛋期日本鹌鹑的最优标准化回肠可消化精氨酸与赖氨酸（SID Arg:Lys）比值。共计245只35周龄的日本鹌鹑（初始体重181±1.30g），被随机分为5个处理组，每组设置7个重复，每个重复包含7只鹌鹑。在基础日粮中添加梯度水平的L-精氨酸，以配制得到5种不同的SID Arg:Lys比值（分别为101%、106%、111%、116%及121%）。采用单因素方差分析对采集的数据进行统计分析，并基于生产性能指标，通过多项式回归模型（线性与二次模型）估算最优SID Arg:Lys比值。统计学差异的判定以p值为依据。