畜牧与饲料科学 ›› 2014, Vol. 35 ›› Issue (4): 80-80.doi: 10.12160/j.issn.1672-5190.2014.04.040
孙国强[1] 胡士林[2] 孔凡虎[3] 吕永艳[1]
SUN Guo-qiang, HU Shi-lin, KONG Fan-hu, Lti Yong-yan(College of Animal Science and Technology,Qingdao Ag'ricultural University,Qingdao 266109,China;Shandong Vocational Animal Science and Veterinary College, Weifang 261061, China;Burean of Animal Husbandry in Yantai City of Shandong Province,Yantai 264003, China)