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After the mare is bred or artificially inseminated, she is checked using ultrasound 14–16 days later to see if she "took", and is pregnant. A second check is usually performed at 28 days. If the mare is not pregnant, she may be bred again during her next cycle. It is considered safe to breed a mare to a stallion of much larger size.
They are a placenta-associated structure, [2] found in the uterine wall of a mare from about 38 to 150 days into a pregnancy. After about 70 days, they begin to regress, [3] and are eventually destroyed by the immune system. [2] They begin to develop at approximately 25 days of pregnancy, deriving from the chorionic girdle.
Equine chorionic gonadotropin (acronym given as eCG but not to be confused with ECG) is a gonadotropic hormone produced in the chorion of pregnant mares.Previously referred to as pregnant mare's serum gonadotropin (PMSG), the hormone is commonly used in concert with progestogen to induce ovulation in livestock prior to artificial insemination.
For this reason, horses need a dental examination at least once a year, and particular care must be paid to the dental needs of older horses. The process of grinding off uneven wear patterns on a horse's teeth is called floating and can be performed by a veterinarian or a specialist in equine dentistry.
When a mare is pregnant, she is said to be "in foal". When the mare gives birth, she is "foaling", and the impending birth is usually stated as "to foal". A newborn horse is "foaled". After a horse is one year old, it is no longer a foal, and is a "yearling". There are no special age-related terms for young horses older than yearlings.
High levels of prolactin during pregnancy and breastfeeding also increase insulin resistance, increase growth factor levels (IGF-1) and modify lipid metabolism in preparation for breastfeeding. During lactation, prolactin is the main factor maintaining tight junctions of the ductal epithelium and regulating milk production through osmotic balance.
In Thailand, due to the tourism and logging industry, the elephant population has severely dropped, and those who still are around endure severe cruelty.Such is the story of Mare Noi, an elephant ...
A broodmare. Note slight distension of belly, indicating either early pregnancy or recent foaling. A mare is an adult female horse or other equine. [1] In most cases, a mare is a female horse over the age of three, and a filly is a female horse three and younger. In Thoroughbred horse racing, a mare is defined as a female horse more