V.T. Nguyen, A.I. Orr, D.G. St. Louis and B.J. Rude
Journal of Animal and Veterinary Advances 6 ( 9 ): 1125 - 1134 , 2007
A.I. Orr, V.T. Nguyen, A. Webb, D.G. St. Louis and B.J. Rude
Journal of Animal and Veterinary Advances 6 ( 11 ): 1343 - 1350 , 2007