Research from the University of Illinois is helping swine producers know what they're getting when they buy soybean meal from different countries.
来自伊利诺伊大学的研究正在帮助养殖户知道，当他们从不同国家购买豆粕时分别会获得怎样的收益。
大豆营养价值
Genetic differences among varieties of soybeans, as well as differences in growing conditions and processing, may affect the nutritional value of soybean meal produced in different places.
大豆品种之间的遗传差异以及生长条件和加工差异可能会影响不同地方生产的豆粕的营养价值。
The largest producers of soybean meal in the world are China, Argentina, Brazil, the United States, and India. In many swine-producing countries around the world, soybean meal is imported from one of these five countries and buyers can choose among them. Until now, however, there has been very limited data to compare the compositional and nutritional value to pigs of soybean meal produced in different countries.
世界上最大的豆粕生产国是中国，阿根廷，巴西，美国和印度。世界大部分猪生产国家的豆粕是从这五个国家之中进口的。然而，到目前为止，几乎只有很少的数据比较过不同国家生产的豆粕的组成和营养价值。
Hans H. Stein, professor of nutrition in the Department of Animal Sciences at U of I, conducted an experiment to compare the nutritional composition and amino acid digestibility by pigs using soybean meal produced in the five major soybean-producing countries.
美国动物科学系营养学教授Hans H. Stein进行了一项实验，比较了五个大豆生产国生产的豆粕的营养成分和猪的氨基酸消化率。
Dr Stein and PhD student Vanessa Lagos collected five sources of soybean meal each from China, Argentina, Brazil, and the United States, and four sources from India. They then fed diets containing the 24 soybean meal sources to growing barrows.
Stein教授和博士生Vanessa Lagos分别收集了来自中国，阿根廷，巴西和美国的豆粕，每个地区收集5种来源，印度收集四种。 然后他们将含有24粒豆粕源的饮食喂给育肥公猪。
"Our data indicate that the amount of digestible protein and amino acids was greater in soybean meal from the United States, India, and Brazil than in soybean meal from Argentina or China," Dr Stein reports.
Stein博士报告说：“我们的数据表明，美国，印度和巴西的豆粕中可消化蛋白质和氨基酸的数量大于阿根廷或中国的豆粕。”
Soybean meal from Brazil and India had the greatest concentration of crude protein and amino acids, he says. However, the standardized ileal digestibility of crude protein and amino acids was greatest in soybean meal from the United States.
他说，来自巴西和印度的大豆粉的粗蛋白和氨基酸浓度最高。然而，来自美国的大豆粉中粗蛋白质和氨基酸的标准回肠消化率最大。
Dr Stein says that in the global economy, feed ingredients may be sourced from a number of different sources.
Stein博士说，在经济全球化中，我们的饲料成分可能来自不同的国家来源。
"It's important to know that the nutritional value of soybean meal produced in different countries may be different, and to take those differences into account when making decisions about purchasing and diet formulations.
“重要的是我们要知道，在不同国家生产的豆粕的营养价值可能不同，并且在作出关于采购和饮食配方的决定时考虑到这些差异。
"Results of this experiment indicating that the concentration of digestible amino acids is less in soybean meal sourced from Argentina or China than in soybean meal from the United States gives international buyers increased information to base purchasing decisions on."
该实验结果表明，阿根廷或中国的豆粕中可消化氨基酸的浓度低于美国的豆粕，为国际买家提供了更多的信息，以便进行采购决策。
US Soybean Export Council (USSEC) chairman Jim Miller says the results of this study echo USSEC's strategy of building a preference for US soy around the world.
美国大豆出口委员会(USSEC)主席吉姆·米勒(Jim Miller)说，这项研究的结果反映了美国食品安全委员会在全球提升美国大豆影响的策略。
"US farmers have always believed that our product is very consistent, and Dr Stein's study proves that soybean meal from the US has less variability in both composition and digestibility."
“美国农民一直认为我们的产品是非常一致的，而斯坦因博士的研究证明，美国的豆粕在成分和消化率方面的差异较小。”
The United States Soybean Export Council and the Indiana Soybean Alliance provided funding for the study.
美国大豆出口委员会和印第安纳大豆联盟为该研究提供资金。