1. Key Laboratory of Animal Physiology; Biochemistry and Molecular Biology of Hebei Province; College of Life Sciences; Hebei Normal University; Hebei 050016 P. R. China
2. Department of Environment and Chemical Engineering; Hebei College of Industry and Technology; Shijiazhuang Hebei 050091 P. R. China
3. Experimental Center; Hebei Normal University; Shijiazhuang Hebei 050016 P. R. China