Ramírez Toro E J, Mesa J A, Agudelo Gomez D A, Bolivar Vergara D M and Cerón-Muñoz M F 2011: Using mixed models to describe growth in buffaloes. Livestock Research for Rural Development. Volume 23, Article #189. Retrieved , from http://www.lrrd.org/lrrd23/9/rami23189.htm