1. Feline Reproductive Physiology
Click and wait for everything to happen.

2. Anatomy Brain Hypothalamus Anterior pituitary Uterine horns Ovaries
Cervix
Vagina/
vestibule
Uterine body

3. Spontaneous Ovulators
Generic Physiology of
Spontaneous Ovulators

4. Spontaneous follicular growth - Proestrus, Estrus
Estrogen
FSH
Proestrus
GnRH
FSH

5. Spontaneous ovulation - Diestrus Estrogen LH Corpus luteum Ovulation
GnRH LH
Corpus luteum
Ovulation LH
Progesterone

6. Proestrus
Estrus
Diestrus/Pregnancy
Interestrus

7. Generic Physiology of
Induced Ovulators

8. Spontaneous follicular growth - Proestrus, Estrus
Estrogen
FSH
Proestrus
GnRH
FSH

9. Induced ovulation - Diestrus GnRH Ovulation Corpus luteum ProgesteroneLH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH
Corpus luteum LH LH LH LH
Progesterone
Vaginal stimulation

10. Physiology of the
Queen as an
Induced ovulator

11. Spontaneous follicular growth - Proestrus, Estrus
Estrogen
FSH
Proestrus
GnRH
FSH

12. Feline without induced ovulation
No neural response
Follicular atresia
Ooocyte degeneration
No vaginal stimulation

13. Interestrus -
1-10 days
Inactive ovaries

14. Estrous Cycle(s) of the Queen
Pro/Estrus
No Ovulation
Interestrus

15. Insufficient vaginal stimulation results in insufficient LH to cause ovulation and results in the queen entering:
Anestrus or interestus

16. Spontaneous follicular growth - Proestrus, Estrus
Estrogen
FSH
Proestrus
GnRH
FSH

17. Feline insufficient vaginal stimulation
Inadequate
GnRH LH
Follicular atresia LH LH LH
Inadequate or short-lived LH
Ooocyte degeneration
Insufficient
LH release and binding
Insufficient vaginal stimulation
Vaginal stimulation

18. Interestrus -
1-10 days
Inactive ovaries

19. Estrous Cycle(s) of the Queen
Pro/Estrus
No Ovulation
Interestrus

20. Sufficient vaginal stimulation
Results in queen entering LH
Ovulation
Diestrus or
pseudopregnancy
Corpus luteum
Progesterone

21. Spontaneous follicular growth - Proestrus, Estrus
Estrogen
FSH
Proestrus
GnRH
FSH

22. Induced ovulation - Diestrus GnRH Ovulation Corpus luteum ProgesteroneLH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH
After day 3 estrus
> 2 hours apart LH
Corpus luteum LH LH LH LH
Vaginal stimulation
Progesterone
Vaginal stimulation
Vaginal stimulation

23. Diestrus or Pseudopregnancy
40 Day Duration (not like dog)
Corpus luteum
Progesterone

24. Diestrus or Pseudopregnancy
After 40 days have luteal degeneration
Corpus luteum
Progesterone
Go into anestrus or interestrus

25. Interestrus -
10-14 days
Inactive ovaries

26. Estrous Cycle(s) of the Queen
10-14 days
Pro/Estrus
Interestrus
Ovulation
Diestrus
40 days

27. Induced ovulation - Pregnancy GnRH Ovulation Corpus luteumLH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH
After day 3 estrus
> 2 hours apart LH
Corpus luteum LH LH LH LH
Breeding
Progesterone
Breeding
Breedihng

28. Pregnancy 65 Day Duration Fertilization in the oviducts
Oocytes enter oviducts 4- 5 days post breeding
Fertilization in the oviducts
Ova spread throughout uterus in days
Sperm cells are moved to oviducts
65 Day Duration

29. Anestrus -
days
Inactive ovaries

30. Estrous Cycle(s) of the Queen
Pro/Estrus
Interestrus
Ovulation/Fertilization
Pregnancy

31. Seasonality of estrous cycles
No Cycles
Cycles

32. Seasonality of estrous cycles
8 hours light
Fall, Winter
No Cycles

33. Anestrus
Inactive ovaries

34. Seasonality of estrous cycles
12 hours light
Spring, Summer,
Cycles

35. Seasonality of estrous cycles
12 hours light
Anytime -
Artificial light
Cycles

36. Estrous Cycle(s) of the Queen
Pro/Estrus
No Ovulation
Interestrus
12 hours light
Seasonal Anestrus
8 hours light

37. Estrous Cycle(s) of the Queen
Pro/Estrus
Interestrus
12 hours light
Ovulation
Diestrus
Seasonal Anestrus
8 hours light

38. Estrous Cycle(s) of the Queen
Pro/Estrus
Interestrus
12 hours light
Ovulation/Fertilization
Pregnancy
Seasonal Anestrus
8 hours light

39. Estrous Cycle(s) of the Queen
Pro/Estrus
Interestrus
12 hours light
Ovulation/Fertilization
Pregnancy
Seasonal Anestrus
8 hours light

40. Estrous Cycle(s) of the Queen
Pro/Estrus
No Ovulation
Interestrus
12 hours light
Ovulation
Ovulation/Fertilization
Diestrus
Pregnancy
Seasonal Anestrus
8 hours light

41. You are done!