We are actually greedy. We feed cattle and poultry and other food producing animals with antibiotics so that they fatten fast with less food! This has its flip side. The practice leads into the development of antibiotic resistance. We must not use antibiotics in areas where it is not medically needed.
The US Food and Drug Administration (FDA) is implementing a voluntary plan with industry to phase out the use of certain antibiotics for enhanced food production. Details of the scheme can be accessed at: