significant changes (P< 0•05) in superficial
cells on day 4 post stimulus but these changes
did not end on the onset of oestrus, which
was corroborated by basal levels of 17
estradiol. Temporary weaning (LW)
promoted significant changes (P< 0•05)
when compared to treatments 1 and 2, in
the number of intermediate, superficial and
enucleated cells on day 10 postpartum, and
on parabasal and superficial cells on day 11,
but at the same time these changes were not
enough to evidence the reonset of the ovaric
activity.
Stimuli used in Group 4 (B+LW),
caused significant modifications (P< 0•001)
when compared to groups 1, 2 and 3;
nevertheless, the promoted changes in the
vaginal mucosae were more marked and
permanent than those found in Group 3
(Figures 1-3). Levels of estradiol superseded
the 30 pg/ml on day 10 post partum, just one
day before the onset of oestrus.
Progesterone’s concentration
maintained its basal levels, and did not show
significant statistical changes in Groups 1, 2
and 3; nevertheless, in Group 4, the plasmatic