Every morning, between 0800 and 0900 hour, the
estrous cycle phases of each female were determined.
Vaginal secretions were collected and placed on glass
slides. Unstained material was observed under a light
microscope, with 10 and 40 x objective lenses. The
procedure followed by Norris (1997) and Marcones
et al (2002) was followed. Each female had an estrous
smear mainly consisting of anucleated cornified
cells and exhibited good sexual receptivity and no
rejection behavior, which was confirmed by Cicero et
al (2001)