Contreras, G. A., Muñoz, J. D., & Sears, P. M. (2013). Reducing the incidence of intramammary infection in heifers by using prepartum systemic tylosin therapy: initial results of a single herd pilot study. Revista Colombiana De Ciencias Pecuarias, 26(2), 119–126. https://doi.org/10.17533/udea.rccp.324821