The stallion (Yr4)

Question 1

what is a stallion?

Answer 1

entire male >4 years old

Question 2

what is a colt?

Answer 2

entire male <4 years old

Question 3

when do stallions reach sexual maturity?

Answer 3

4-5 years

Question 4

when do colts start puberty?

Answer 4

1-2 years old

Question 5

how long does spermatogenesis take?

Answer 5

60 days

Question 6

how often should a stallion be used for breeding?

Answer 6

on average no more than 2 a day (some go up to 6 per day)

Question 7

where should be swabbed to check for contagious equine metritis?

Answer 7

urethra, urethral fossa, penile sheath and pre-ejaculatory fluid

Question 8

what causes contagious equine metritis?

Answer 8

Taylorella equigenitalis

Question 9

what is a notifiable sexually transmitted disease in stallions?

Answer 9

equine viral arteritis

Question 10

how can equine viral arteritis be prevented/controlled?

Answer 10

vaccination

Question 11

what effect does equine viral arteritis have on stallions and mares?

Answer 11

stallions… no effect, they are just carriers
mare… abortions

Question 12

how should paraphimosis be treated?

Answer 12

support penis with a sling/truss and then GA horse to gently but firmly replace penis and purse string suture across preputial orifice

Question 13

how is priapism treated?

Answer 13

surgically corrected by flushing corpus cavernosum with heparinised saline under GA

Question 14

what is priapism?

Answer 14

maintained erection in the absence of stimulation

Question 15

what are two source of colic specific to stallions?

Answer 15

scrotal hernias and testicular torsions

Question 16

what are the advantages of AI?

Answer 16

semen transported to spread genetics
more matings from one ejaculate
reduce venereal disease and post-mating endometritis
semen can be examined

Question 17

how long does fresh, chilled and frozen semen last for?

Answer 17

fresh - use immediately
chilled - use within 48 hours
frozen - can keep forever