Howdy,
Bull Test,
Usually state run, or on-the-farm test.
On-the-Farm Test below.
You will need easy access to scales. You will want to make sure all your vaccinations are up to date. Decide wether you will hand feed or self-feed. Find out a local supplier of bulk custom mixed feeds, or 50# custom mixed feed bags. (This could be from a local CO-OP, Feed store, grain house.)
There are rations out there already. What I mean is if you go to your local CO-OP and ask them about what blends of feed they can supply for a bull gain test, they might already have a hot ration mix already setup to use. If you ask for a totally custom mix (at least in Virginia) you will need to buy it in 2.5 tons increments. (bulk that is) This is where something like the Apache Self-feeder/Creep feeder comes into play. Start them in gradually into the new feed type. Then after about 2 weeks pre-test, its time to start.
Have all you choice bulls selected. Ones that already are looking good, and are doing well. Good breeding and EPD's. Weigh all the bulls, measure standing height. Usual test times here in Virginia are 120 days. You will then want to divide that into a trimester and take your weights again at 40-day intervals. Towards the end of your on-the-farm test, you will want to schedule an ultrasound technician visit. AAA has a list of C.U.P. certified technician's available. You will want to schedule a visit from a vet for breeding soundness exam. Draw blood here for test for out-of-state transfers if needed. (TB and BANGS here). Let others know you are wrapping up an on-the-farm test. Take your final 120 days weights, height measurements. Figure out your feed conversion, ADG, Final weights, final height, and you will have your ultrasound data to input as well.