The Quarter Horse News has released information about an interesting study conducted by researchers at Michigan State University that was presented to AQHA’s Stud Book and Registration Committee during the 2018 AQHA Convention in Jacksonville, Florida.
The study identifies a genetic mutation- Myosin Heavy Chain 1 (MYH1)- that’s linked to severe and sudden muscular atrophy. DNA testing indicated that the mutation is more commonly found in Quarter Horse stallions from Reining and Reined Cow Horse disciplines.