Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200,Bangladesh

tail disarticulation cyst rectovaginal fistula dermoid cyst naval ill limb amputation gid disease castration of cat caecal dilation rectovaginal atresia ani myiasis viral diseases bacterial diseases egg drop syndrome avian leucosis avian pox infectious bronchitis infectious bursal disease avian influenza marek’s disease newcastle disease vccination immune response antigen antibody immunity species identification biological characteristics dog goat castration of cattle soundness examination herd health management avian pathology