Sun D. B., Wu R., Guo D. H.*, He X. J., Zheng J. S., Wang J. F., Lin Y. C., Han X., Wang Y. Q. and Guo T. T.
College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing High-tech Industrial Development Zone, Daqing 163319, P. R. China.
