Animal Husbandry and Feed Science ›› 2010, Vol. 31 ›› Issue (11): 48-48.doi: 10.12160/j.issn.1672-5190.2010.11.024
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YANG Xiao-hua,XIN Xiao-ling,WANG Xiao-liang,ZHANG Yong(1.Animal Husbandry Technology Promotion Center of Weinan City,Weinan 714000,China;2.Animal Husbandry and Veterinary Station of Fuping County of Shaanxi Province,Fuping 711700,China;3.Animal Husbandry Technology Promotion Station of Baishui County,Baishui 715600,China;4.College of Veterinary Medicine,Northwest A&F University,Yangling 712100,China)