Cortada, C. N. M., Lucci, C. de S., Forero Gonzalez, R. A. F., Mattos, C. B. de and Zogno, M. A. (2000) “Plasmatic urea levels influence on citogenetic parameters of wool-less rams”, Brazilian Journal of Veterinary Research and Animal Science, 37(6), pp. 449-452. doi: 10.1590/S1413-95962000000600005.