This is how Greg Judy – a regenerative farmer – bands his bulls Posted on December 23, 2020December 23, 2020 7.07.2020 Banding our bulls with Callicrate bander tool. We use the natural weight gaining mechanism that came with the bull when he was born, TESTOSTERONE!! By leaving the testicles on the bull until they are yearlings, we get much better natural weight gain from them. No effect on the meat quality that we have found.