Animal Husbandry and Feed Science ›› 2009, Vol. 30 ›› Issue (6): 107-107.doi: 10.12160/j.issn.1672-5190.2009.06.062
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E Guang-xin, LIU Di, GUO Quan-he, ZHU Ji-yuan,YANG Shao-cheng (t.College of Animal Science and Technology, Northeast Agricultural University, Harbin 250030, China; 2. Institute Animal Science of Helongjiang Agricultural Science Academy, Harbin 150086, China)