Authors
C. Han
College of Veterinary Medicine, Northeast Agricultural University, Harbin
J. Xu
College of Veterinary Medicine, Northeast Agricultural University, Harbin
Ch. Liu
College of Veterinary Medicine, Northeast Agricultural University, Harbin
X. Li
College of Veterinary Medicine, Northeast Agricultural University, Harbin
P. Zhai
College of Veterinary Medicine, Northeast Agricultural University, Harbin
A. Hashan
Tiemaike Animal Husbandry and Veterinary station, Fuyun