Animal Husbandry and Feed Science ›› 2009, Vol. 30 ›› Issue (10): 23-23.doi: 10.12160/j.issn.1672-5190.2009.10.009
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ZHANG Feng,WANG Kun,WANG Xue-qing, MA Shu-lin, WU Zhan-jun (Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Science, Dairy Cattle Research Centers of Hebei Academy of Agriculture and Forestry Scienee,Shijiazhuang 05003 l,China)