Animal Husbandry and Feed Science ›› 2009, Vol. 30 ›› Issue (9): 75-75.doi: 10.12160/j.issn.1672-5190.2009.09.033
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LIU Hao, XU Qing-fang (College of Animal Science and Technology, Shanxi Agricuhrual University, Taigu 030901, China)