Horse Repro

Question 1

Functional genital anatomy and defects
General understanding of estrus cycle
Management of seasonality
Breeding

Answer 1

gr

Question 2

What can the ovulation fossa in the mare clue you in to?

Answer 2

Granulomas

Question 3

Cervical problems

Answer 3

Old maiden mare syndrome - fibrous, unable to relax
Dystocia
Nervous

Question 4

What are the three seals to prevent contamination?

Answer 4

Cervix
Transverse fold
Vulva

Question 5

What does the neurohypophysis produce?

Answer 5

ADH

Oxytocin - parturition and luteolysis

Question 6

When do horses reach puberty?

Answer 6

12-24mo

Question 7

How long is the horse estrus cycle?

Answer 7

20-22d

Question 8

When during the estrus cycle does LH peak?

Answer 8

2d after ovulation

Question 9

What do each of the main hormones do in the mare? (5)

Answer 9

FSH - new follicles
LH - peaks 2d after ovulation, in charge of final follicular rescue
Inhibin - inhibits FSH
Pgf2a - lyses CL, peaks before ovulation

Question 10

What is the natural breeding season?

Answer 10

March - August (long day breeders)

Question 11

Which hormones can be given to manage seasonality?

Answer 11

Progestin
Dopamine antagonists (Sulpiride)

Question 12

T/F: If prostaglandin is given 6-7d post ovulation, the mare will go back into heat

Answer 12

True

Question 13

What are some horse STDs? (3)

Answer 13

Taylorella equigenitalis (contagious equine metritis)
Coital exanthema (herpes type 3)
Equine viral arteritis

Question 14

What is the most common testicular neoplasia of the stallion?

Answer 14

Seminoma