SERUM COLORATION AS A CRITERION OF THE SEVERITY OF EXPERIMENTAL COCCIDIOSIS IN THE CHICKEN

Serum decoloration may be used as a criterion for the severity of cocc idiosis. Direct measurement of serum coloration at 480 nm is easy to c arry out and, with micromethods, it is not necessary to slaughter anim als. With intestinal coccidia the sensitivity is high, and there is go od correlation with the severity of infection and variability is small . With Eimeria tenella infection the criterion is less sensitive, but may be of value for some purposes.