An ejection fraction is most commonly measured during an echocardiogram. 1  This painless and noninvasive test uses high-frequency sound waves (ultrasound) to get a picture of the four heart chambers and the four heart valves. Ejection fraction can also be measured as part of other diagnostic testing, such as: 1  MUGA Scan: A type of radionuclide imaging test that provides clear pictures of blood flow through the heart's chambers and blood vessels.
Horses have a gestation period that lasts approximately 340 days. If that sounds like a long time to wait for the baby to be born, youâd be no better off raising llamas (350 days) or donkeys (365 days).
Equine Gestation. Miniature ponies, and all other breeds of horses, typically carry their foals for approximately 11 months. The average miniature horse mare will carry her foal for around 330 days before giving birth. The actual length of pregnancy can vary between 320 days and 380 days.very mare is different, so if you're not sure exactly how long your mare normally carries her foals, you should start watching her for signs of delivery when she's about 300 days from her most recent breeding.