what is rbch milk
rBGH is a genetically engineered artificial hormone injected into dairy cows to make them produce more milk. Despite opposition from scientists, farmers and consumers, the US currently allows dairy cows to be injected with recombinant bovine growth hormone (rBGH), also known as recombinant bovine somatotropin (rBST).espite opposition from scientists, farmers and consumers, the US currently allows dairy cows to be injected with recombinant bovine growth hormone (rBGH), also known as recombinant bovine somatotropin (rBST).