Carvalho Lizia C, Mani Tatyany S A, Lima Michele B, Pavanini Jaqueline A, Vieira Rita B, Amoroso Lizandra, Silva Edney P
Department of Animal Sciences, UNESP-Universidade Estadual Paulista, Via de Acesso Professor Paulo Donato Castellane, S/N, Jaboticabal 14883-900, SP, Brazil.
Animals (Basel). 2022 Oct 27;12(21):2953. doi: 10.3390/ani12212953.
The description of the genetic potential is the first step to estimating amino acid requirements and the ideal amino acid relation (IAAR). The aim of this study was to estimate the parameters that describe the daily maximum theoretical nitrogen retention (NRT, mg/BWkg), daily nitrogen maintenance requirement (NMR, mg/BWkg), protein quality (), dietary efficiency of the limiting amino acid () and determine the lysine requirement and the IAAR for Japanese quail breeders. Two nitrogen balance assays were performed, one assay using 49 quails distributed in seven treatments (protein levels between 70.1 and 350.3 g/kg) and seven replicates and other assay to determine the IAAR by the use of , 12 treatments and 10 replicate, with a control diet (CD) and 11 treatments that had limited essential amino acids by providing only 60% of the CD. The values obtained for NRT, NMR, and were 3386.61, 0.000486 and 0.000101, respectively. The daily intake of Lys was 291 mg/bird day. Lys was set at 100% for determining the IAAR: 87, 67, 21, 117, 96, 66, 142, 39, and 133 for Met + Cys, Thr, Trp, Arg, Val, Ile, Leu, His, and Phr + Tyr, respectively, for Japanese quail breeders.
对遗传潜力的描述是估计氨基酸需求量和理想氨基酸比例（IAAR）的第一步。本研究的目的是估计描述每日最大理论氮保留量（NRT，mg/BWkg）、每日氮维持需求量（NMR，mg/BWkg）、蛋白质质量、限制性氨基酸的日粮效率的参数，并确定日本鹌鹑种鹑的赖氨酸需求量和IAAR。进行了两项氮平衡试验，一项试验使用49只鹌鹑，分为七个处理组（蛋白质水平在70.1至350.3 g/kg之间），每组七个重复；另一项试验通过使用……确定IAAR，有12个处理组，每组10个重复，包括一种对照日粮（CD）和11种处理组，这些处理组通过仅提供对照日粮60%的量来限制必需氨基酸。获得的NRT、NMR、……的值分别为3386.61、0.000486和0.000101。赖氨酸的每日摄入量为291 mg/只·天。为确定IAAR，将赖氨酸设定为100%：对于日本鹌鹑种鹑，蛋氨酸+半胱氨酸、苏氨酸、色氨酸、精氨酸、缬氨酸、异亮氨酸、亮氨酸、组氨酸和苯丙氨酸+酪氨酸的IAAR分别为87、67、21、117、96、66、142、39和133。
