英文文献：The New Economics of Livestock Production Management-畜牧业生产管理的新经济学
英文文献作者：Hubbs, Todd,Preckel, Paul V.,Schinckel, Allan P.,Deen, John,Foster, Kenneth A.,Curtis, Stanley E.,Johnson, E. Wayne
英文文献摘要：
The importance of heterogeneity of animal attributes in livestock production is assessed. Preliminary results indicate that variance and skew measures of attributes may be becoming more important over time.

评估了家畜生产中动物属性的异质性的重要性。初步结果表明，随着时间的推移，属性的方差和倾斜度量可能变得越来越重要。