Hello from Texas,
In response to your questions about the Dexter Bull may I ask the question about both Dexter Bulls A1 and A2 beta-casein genes. Have they been tested? This would be a good place to start in deciding if you would like the A-2 gene for milk. Also, I did not see other tests such as did you want to test for Chondrodysplasia or Pulmonary hypoplasia with anasarca (PHA). It may sound like a lot of work but it's answers can better help you with your decision. If I can help you with the tests feel free to contact me,
Angie Gaines
Fitz's Golden Dexters
Kaufman, TX
2147941776