王艳丰1,张丁华1,曹智高1,银岭1,桂启胜2,朱金凤1
(1.河南农业职业学院动物科学系,河南中牟 451450;2.河南豫正生物科技有限公司,河南中牟 451450)
WANG Yan-feng1,ZHANG Ding-hua1,CAO Zhi-gao1,YIN Ling1,GUI Qi-sheng2,ZHU Jin-feng1
(1.Department of Animal Science, Henan Vocational College of Agriculture,Zhongmu 451450,China;2.Henan Yuzheng Biological Technology Co., Ltd.,Zhongmu 451450,China)