Studies on Coccidiosis

THIS paper is a continuation of the studies reported in a previous paper by Mayhew (1932) on the results obtained when chickens were inoculated during the seventh week. The birds herein reported upon were raised under the same conditions of feeding, temperature, and in the same equipment. Two of the three lots were inoculated during the thirteenth and the other during the fourteenth week. The eggs producing these chickens were all from the same flock of Single Comb Rhode Island Red hens which had been tested for bacillary white diarrhea and found free. Conditions of Inoculation The inoculations were made while the chickens were confined to the sunporches described in the paper referred to. On the fifth or sixth day after inoculation each chicken was isolated from one to two weeks depending upon the severity of the infection and the rapidity of recovery, after which they were returned to the . . .