Equine therio Flashcards
When are Mares actively cycling (which par of the year)?
April - October (Long day breeders)
Estrous cycle length
21 days
Length of estrus
3 - 12 days (avg 7 days)
When do mares ovulate during estrus?
the last 24 - 48 hours of estrus
Estrogen - from preovulatory follicle
Uterine edema
What is the length of diestrus in the mare?
14 - 15 days
Progesterone - tone uterus
CL not palpable
When are progestins effective to advance the breeding season in the mare?
Late transition period
What percentage of mares that are healthy will cycle all year round?
25%
What are the requirements for shipping semen into Washington state?
Current coggins test health certificate (EIA neg)
Neg EVA from current year/proof of vaccination
Semen permit # (issued by USDA)
Semen evaluation paperwork
What is the best breeding management technique for live cover?
In-hand mating and at the most breed mare only once (so monitor follicular growth)
How long after giving GnRH or hCG to a mature follicle mare does she ovulate?
36-48 hours
GnRH (Deslorelin oil base)
When is the mare pregnancy dependent on the placenta to maintain pregnancy with progesterone?
after 100 days
