冀东地区干乳期奶牛日粮中微量元素盈缺分析

李成会,朱莲英,梁佳轩

Analysis of Surplus and Deficiency of Trace Elements in Cow Diet in Dry Period in Eastern of Hebei

畜牧与饲料科学 . 2008, (6): 70 -70 . DOI: 10.12160/j.issn.1672-5190.2008.06.027