RIBEIRO, B., DOS SANTOS, R., MARQUES,G., GORZONI, E., TRINCA, L., DELL’AQUA, J., CELY, JR., MELO, M., SOARES, F., ALVARENGA, M., & OZANAM, F. 2015. Fixed-time insemination with frozan semen in mares: is it suitable for poorly fertile stallions?. Theriogenology 83 (9): 1389-1393.