The histomonosis is a protozoan disease, caused by Histomonas meleagridis, and characterized by necrotizing lesions affecting the liver and the caeca. Clinically, sulfur-yellow coloured faeces and depression are observed. A characteristic feature is the blackening of the skin of the head (blackhead), due to cyanosis.
CRD is a specific disease caused by one of the group of organisms known as pleuro pneumonia like organism (PPLO), but more closely defined is Mycoplasma; the particular organism directly associated with CRD is Mycoplasma gallisepticum with or without secondary … Đọc thêm
The egg drop syndrome – 1976 (EDS 76) is an infectious disease in layer hens manifested by a quick drop in egg production, failure to reach peak production, irregularly shaped eggs, soft-shelled or shell-less eggs and depigmentation. The aetiological agent … Đọc thêm