[1] Univ Estadual Paulista UNESP, Sch Agr Sci & Vet Med FCAV, Dept Prevent Vet Med & Anim Reprod, Jaboticabal, SP, Brazil
[2] Univ Franca UNIFRAN, Anim Reprod Div, Franca, SP, Brazil
[3] Ctr Univ Cesumar UNICESUMAR, Vet Anesthesia Div, Maringa, PR, Brazil
[4] Univ Franca, Vet Ultrasound Div, Franca, SP, Brazil
[5] Univ Franca, Div Anim Sci, Franca, SP, Brazil
[6] Univ Franca, Postgrad Program Sci, Franca, SP, Brazil
[7] Univ Fed Santa Maria, Vet Surg Div, BR-97119900 Santa Maria, RS, Brazil