Pigs on a farm (IMAGE) University of Cambridge Caption A highly antibiotic-resistant strain of the superbug MRSA has emerged in livestock in the last 50 years, probably due to widespread antibiotic use in pig farming. Credit Dan Tucker Usage Restrictions With credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.