i think it must matter where in the country you are located. i have taken everything from 1 to about 5 years old to a usda certified facility. they have never even asked the age or charged more for the animals that were definitely over the 30 month mark. nor did they ask age when i called for a slaughter dateYou will probably have to pay more for the processing. 30 months is the cutoff, there are some special procedures that have to be done after that age due to BSE. But the meat should still be good eating. A lot of the beef you buy at the store is from old cows and bulls.
Check any meds or dewormers you are using (or have recently used) on the bull and make sure you're in compliance with the withholding times on them. It varies from drug to drug; I think most pour-on dewormers are 45 days.What special things need to be done mow cow