Lots of folks utilize AI breeding for their cattle and especially in the dairy industry. We used to have some AI work done with our beef cattle, and when I started raising dairy calves on nurse cows we AI bred some to Jersey bulls. Our local AI tech was able to get some Jersey straws of some younger/new unproven bulls less expensive than popular older ones and it was just fine for what we wanted. You may have already looked into this but I would advise you to contact some AI techs or company representatives in your area to see what services are available. I would also advise against acquiring a walking Jersey bull or bull if any other dairy breed. They can be extremely aggressive.