Reproduction Flashcards
define gelding
castrated male
define filly
female less than 2 years old
define colt
entire male less than 4 years old
define dam
mother
define sire
father
describe horses breeding cycle
seasonally polyoestrous
natural season spring to autumn due to increasing day length
oestrus cycle lasts 21 days
define mare
female adult
why do mares have spring to autumn oestrus naturally?
mares and foals easiest maintained at grass
time for foal to grow before winter
11 month gestation roughly
why are thoroughbred bred in early in the year?
want to race as old as possible in group so aim to birth as soon after january 1st by covering from valentines day
how are thoroughbred mare cycles manipulated?
lights
drugs
induces ovulation
define covering
mating
what are pre-breeding check on horses?
general health strangles clinical exam reproductive health ultrasound ovaries for follicle development reproductive diseases
how are horses checked for reproductive diseases?
swab clitoral fossa and sinus, endometrium
submit for cytology and culture
define teasing
male used to test if mare in season if she is receptive
what horses are used as a teaser?
low value pony
stud stallion
why are low value ponies usually used for teasing?
cheap
less consequence if injured during teasing
define stallion
entire male adult
list signs of oestrus in mares
lift tail winking vulva squirting urine wide legged stance acceptance of male
how do stallions react to mares in oestrus?
phlemen posture sniffing and nuzzling biting hindlimbs and perineum drop and erect penis covering mare
what are signs on ultrasound of best time to cover mares?
large follicle
uterine oedema
no free fluid in uterus