The UC Davis' Veterinary Genetics Laboratory (VGL) has released new tests for three equine conditions: Equine Familial Isolated Hypocalcemia (EFIH), Androgen Insensitivity Syndrome (AIS) and Congenital Stationary Night Blindness (CSNB) in Tennessee Walking Horses.
Undergraduate intern Izzie Hack was instrumental in discovering the genetic cause CSNB in Tennessee Walking Horses. The VGL can now test for the variant that is suspected to cause SCNB in Tennessee Walking Horses. This testing can help Tennessee Walking Horse owners and breeders identify affected horses and carriers that may produce affected foals.
The other tests the VGL can now test for are Equine Familial Isolated Hypocalcemia (EFIH) and Androgen Insensitivity Syndrome (AIS). EFIH causes involuntary contraction of muscles and seizures in Thoroughbred foals; it is fatal. AIS causes genotypic males to have external female genitalia; affected horses generally have an underdeveloped uterus as well as underdeveloped, retained testes. Horses with AIS are infertile and act like stallions.
Additional information about each test is available.
- Congenital Stationary Night Blindness (CSNB2) in Tennessee Walking Horses
- Equine Familial Isolated Hypocalcemia (EFIH)
- Androgen Insensitivity Syndrome (AIS)
Read more here.
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