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Farm Animal Repro Part 3
n/a
24
Agriculture
Undergraduate 4
11/13/2011

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Cards

Term
When does a cow ovulate?
Definition
12-16 hours after end of estrus
Term
When does a goat ovulate?
Definition
24-36 hours after onset of estrus
Term
When do sheep ovulate?
Definition
16-30 hours after onset of estrus
Term
When does a pig ovulate?
Definition
35-45 hours after onset of estrus
Term
When does the horse ovulate?
Definition
1-2 days before end of estrus
Term
When does the dog ovulate?
Definition
2-3 days after onset of estrus
Term
This is what it's called when a woman can detect ovulation due to pain above the kidney.
Definition
Mittleschmertz
Term
This occurs more often in women under stress in which they don't ovulate and can throw off the cycle.
Definition

Stein-Leventhal Disease /

Polycystic Ovary Syndrome

Term
When born, females have a certain number of primordial follicles, this is called ___
Definition
theoretical potential
Term
What is ovarian senescence?
Definition
When the ovary can no longer produce viable oocytes
Term
The first follicle in the cohort that is ready to ovulate is called ___
Definition
the dominant follicle/ ovulatory follicle
Term

On average a cow has a follicular wave every 5 days.

true or false?

Definition
false, cows have a follicular wave every 7 days (3 waves)
Term
Why doesn't the dominant follicle of the first wave ovulate?
Definition
On day 7 there will be a functioning CL producing P4
Term
In the cow, which dominant follicle will ovulate?
Definition
The dominant follicle of the third wave because on day 21 there's no CL
Term
Explain what happens for each wave.
Definition

Wave 1: dominant follicle produces small amount of estrogen that prepares the uterus for embryo

Wave 2: dominant follicle produces estrogen that causes the formation of oxytocin receptor sites in the uterus which enhances luteal regression

Wave 3: dominant follicle causes estrus and causes ovulation

Term
If you give a shot of PGF2alpha on day 5 of cycle, when will cow come into estrus?
Definition
PGF2alpha will decrease P4 causing dominant follicle of wave 1 to grow and cow will come into estrus within 3 days
Term
In a litter bearing animal, when the dominant follicle ovulates, what happens to the rest of the wave?
Definition
The whole wave ovulates
Term
How many waves does the mare have?
Definition
2
Term

Inadequate nutrition doesn't effect the number of follicles in a cohort.

true or false?

Definition
false, inadequate nutrition can decrease the number of follicles in the cohort
Term
An increase in energy in the diet will do what to the ovulation rate?
Definition
increase
Term
MGA?
Definition

Melgesterol acetate

P4 taken orally, fed to animals to synch estrus

Term
CIDR?
Definition
Controlled Internal Drug Release Devise
Term
How do sows synch estrus on their own?
Definition
post lactational estrus, piglets nursing keep sow out of estrus. Once taken away sow will come back into estrus
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