Animal Husbandry and Feed Science ›› 2009, Vol. 30 ›› Issue (1): 135-135.doi: 10.12160/j.issn.1672-5190.2009.01.071
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SHEN Wei-ping,et al (Jiangyan Veterinary. Station of Jiangyan City in Jiangsu Province,Jiangyan 225500,China)