Recently we have seen a number of cases of coccidia. Coccidiosis is caused by a parasitic bug, it results in a bloody scour which is seen in calves greater than 3 weeks of age up to a few months of age. Affected calves often continuously strain to defaecate. The percentage of a mob affected can be very high as can the mortality rate. Calves which survive a severe infection will have significant checks in growth. Full recoveries can take over a month..
Coccidia are resilient bugs. Most calf meals contain coccidiostats (these are not protective until calves are eating over a kg/day). Treatment can be made with Baycox C which is a single oral drench or daily with Deccox powder mixed in milk for a period of a week.