What is antibiotic resistance?
Bacteria continuously find ways to grow even when an antibiotic is present. This process is known as antibiotic resistance. Every time a new antibiotic is created, bacteria eventually find a way to defeat it. The existence of antibiotic resistance means that more illnesses are becoming harder to treat.
Not all antibiotics are equal!
Some antibiotics are more powerful than others and many of powerful antibiotics are not approved for use in animals in order to reduce the risk of the most important and powerful antibiotics developing resistance. One category of antibiotics (e.g. ionophores) are not used at all in human medicine, and are often used preventatively in animals. This is important because previous experience has shown that when preventative antibiotics are banned and animals get sick, a higher dose of a more powerful antibiotic is required.