Castration and dehorning of cattle is the common practice in the cattle industry. This a violation a basic Noahide Law ref Tractate Sanhedrin 56a-b:
שבע מצות נצטוו בני נח ...רבי חידקא אומר אף על הסירוס Seven commandments were given to the sons of Noah... Rabbi Chidka said they were also commanded not to castrate animals.
All men today that are Bnei Noah are required to follow this command. I refuse to castrate and dehorn my cattle and get a big reduction in sale price for them at the local sale barns. Most of all male slaughtered animals in the US have been castrated, dehorned if not polled by mixed breeding and then fattened on Kilayim-(mingled seed) (GMO) feeds with herbicide residues. Why are these animals slaughtered as kosher beef?