Add to ORKGArthritis of swine is of economic importance to the swine producer and the meat packer. Recent figures from USDA meat inspection records have shown an increasing trend in condemnations of parts of carcasses and of whole carcasses due to arthritis. Figures for 1969 show a multimillion dollar loss due to trim and condemnation on the packing floor. This is only a small portion of the actual loss. Most losses due to arthritis are suffered by the producer in terms of slower and less efficient gains. Death losses may occur from the septicemia due to the infectious agent in the blood stream. These losses while great, are difficult to document but substantially add to the cost of swine production on the farm