Oestrus cycle of the bitch and queen Flashcards
1
Q
How long is the interval in the oestrus cycle of the bitch?
A
7 months
2
Q
Describe the role of prolactin in the bitch
A
- It is the main luteotrophic hormone
- As progesterone declines (from day 21) it stimulates prolactin which aids to help maintain the progesterone.
3
Q
In the bitch and queen where is progesterone produced?
A
In the ovary by the CLs
4
Q
In order for ovulation in the queen to occur what must happen?
A
LH surge from mating must be high enough to exceed threshold value
-Multiple matings over a short period increases chances of ovulation occurring.
5
Q
What is special about canine ovulation?
A
-Ovulate a less mature oocyte- primary oocyte, these can be penetrated but not fertilised
