A note on chronic footrot of dairy cattle

With the advent of treatment with ™ sodium sulphamezathine for footrot of dairy cattle, many of the troubles associated with this condition have largely been overcome. However, the importance of early treatment is sometimes overlooked and Fig. 1.—Chronic footrot caused the ragged growth of new bone shown in the two lower pictures. At the top are the bones of a healthy foot from an animal of similar size. some farmers are inclined to blame the drug when treatment has been commenced after the animal has been affected for some time and a cure does not result. Why treatment is not successful when the condition has become more or less chronic is strikingly illustrated in the accompanying photographs which show the bones of the foot of an affected cow with a chronic footrot condition which did not respond to treatment contrasted with the bones of a healthy animal of comparable size