“…Several studies addressed the role of the vascularity of genital organs in the estrous cycle, reproductive life, and gestation (Reed et al 1996, Nautrup 1998, Bollwein et al 2000, 2002a, 2002b, Köster et al 2001, Alvarez-Clau & Liste 2005, Di Salvo et al 2006, Scotti et al 2008, Brito et al 2010, Polisca et al 2010, Blanco et al 2011, Pereira et al 2012a, 2012b. Color-Doppler ultrasonography was previously used in cows to evaluate the vascularity of follicle, CL, and conceptus (Myamoto et al 2005, Pareja et al 2010, Silva et al 2010).…”