Abstract Soya bean meal (SBM) is the most important source of protein and indispensable amino acids in non-ruminant diets worldwide. The chemical composition, protein quality and nutritive value of commercial SBM depend on numerous factors, including seed variety, environmental conditions during growing, harvesting and storage of the beans and the procedure used for oil extraction. A meta-analytical approach was conducted to quantify the relation between the country of origin of the beans [Argentina (ARG), Brazil (BRA), USA and India (IND)] and the chemical composition, protein quality and nutritive value of the SBM. The data set used was obtained from 18 published papers from 2002 to 2018 with a total of 1944 samples of SBM. The data were analyzed using a mixed model with country of origin of the beans as a fixed effect and the study as a random effect. Origin of the beans had consistent and significant effects on most of the chemical variables of the corresponding SBM. The BRA SBM had more crude protein (CP), neutral detergent fiber, raffinose and iron but less sucrose, stachyose and K contents than the USA or the ARG SBM (P

中文翻译：

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不同国家豆类商品豆粕的化学成分、蛋白质质量和营养价值：荟萃分析研究

摘要 豆粕（SBM）是全球非反刍动物饲料中最重要的蛋白质和不可缺少的氨基酸来源。商业 SBM 的化学成分、蛋白质质量和营养价值取决于多种因素，包括种子品种、豆类生长、收获和储存过程中的环境条件以及用于油提取的程序。使用元分析方法来量化豆类原产国 [阿根廷 (ARG)、巴西 (BRA)、美国和印度 (IND)] 与 SBM 的化学成分、蛋白质质量和营养价值之间的关系. 使用的数据集来自 2002 年至 2018 年发表的 18 篇论文，共有 1944 个 SBM 样本。使用混合模型分析数据，豆的原产国作为固定效应，研究作为随机效应。豆类的来源对相应 SBM 的大多数化学变量具有一致且显着的影响。与美国或 ARG SBM 相比，BRA SBM 具有更多的粗蛋白 (CP)、中性洗涤纤维、棉子糖和铁，但蔗糖、水苏糖和 K 含量较少（P