1. Heat Cycle of The Female Dog
Estrus

2. What is Estrus?
The stage in which the female is receptive to the male and conception can occur.
Duration varies
Lasts approximately 3 – 9 days

4. Clinical Signs of Estrus
Less edema
Discharge becomes clearer
Discharge is more yellowish then bloody

5. Clinical Signs of Estrus
Vulva remains turgid, very warm when touched, and voluminous
Female will stand “Flag” for the male

6. What is Flagging? Female will stand for the male Rear in the air
Tail off to the side

7. The Cytology of Estrus Difficult to determine.
Distinguishing features only at beginning and end of the estrus cycle.
Influenced mainly by estrogens.

8. Cytology During Estrus
Grandular Secretions increase

9. Cytology During Estrus
Vaginal epithelium becomes hyperemic

10. Cytology During Estrus
Ovulation occurs

11. Cytology During Estrus
Increase in LH Hormone.
90% Superficial cells
Bacteria usually present
Absence of Neutrophils

12. The End
Ashley
Kristy
Sonia
Kaitlyn
Daisy
M&M