(1)
Grillo, G. F.; GuimarĂ£es, A. L. L.; do Couto, S. R. B.; Figueiredo, M. A.; Palhano, H. B. Comparison of Pregnancy Rate Between Heifers, Primiparous and Multiparous Nellore Submitted to Artificial Insemination Fixed Time. Braz. J. Vet. Med. 2015, 37, 193-197.