Equine reproduction

The mare:

• Is Seasonally polyestrous and the estrous cycle lasts 21 days

• Is True polyestrous and the estrous cycle lasts 21 days

• Does not go into "heat" and in an induced ovulator

• Is Diestrous, and receptive to males twice a year

The earliest day of gestation that pregnancy can be diagnosed is

• 30 days, by transrectal palpation

• 10 days, by transrectal ultrasound

• 21 days, by transrectal ultrasound

• 10 days, by transrectal palpation

Normal foaling includes:

• "Water breaking" and a WHITE sac with feet and head protruding from vulva within 5 minutes,

• "Water breaking" and a RED sac with feet and head protruding from vulva within 5 minutes,

• "Water breaking" and a WHITE sac with feet and head protruding from vulva within 30 minutes,

• "Water breaking" and a RED sac with feet and head protruding from vulva within 30 minutes,

The placenta should be passed within _____ hours of foaling

• 3

• 8

• 12

• 24

Taylorella equigenitalis causes:

• The highly communicable veneral disease: Contagious Equine Metritis which results in infertility of the mare

• Equine Viral Arteritis which causes abortion, respiratory disease and dependent edema

• Equine Herpes Type 1 which causes abortion and can also cause respiratory disease and spinal cord disease

• Twins: by increasing the likelihood of double ovulation.

In Mares, Prostaglandin F2 alpha is used to:

• Shorten the estrous cycle, or to terminate pregnancy

• Decrease inflammation

• Stimulate milk production

• Induce ovulation

This veterinarian is performing

• Transrectal ultrasound

• Abdominal ultrasound

• Transrectal radiography

• Abdominal radiography

"Waxing up" is:

• Colostrum exuding from the teats and occurs 6-48 hours before foaing

• Cerumen excreted from the teats and occurs 6-48 hours before foaling

• Cerumen accumulation in the ears and occurs 6-48 days before foaling

• Colostrum exuding from the teats and occurs 6-48 days before foaling

When the mare's "water" breaks, this is actually

• Rupture of the chorioallantoic membrane

• Separation of the chorioallantoic membrane

• Protrusion of the allantoic membrane

• Protrusion of the chorioallantoic membrane

If twins are identified during an early "preg check" the best course of action is:

• Congratulate the owner and do nothing

• Remove one embryo by manually crushing it

• Double the mare's ration, she will need to "eat for two"

• Remove both embryos