Avian infectious bronchitis

Avian infectious bronchitis (IB) is an acute and highly contagious respiratory disease of chickens. The disease is caused by avian infectious bronchitis virus (IBV), a coronavirus, and characterized by respiratory signs including gasping, coughing, sneezing, tracheal rales, and nasal discharge. In young chickens, severe respiratory distress may occur. In layers, respiratory distress, nephritis, decrease in egg production, and loss of internal (watery egg white) and external (fragile, soft, irregular or rough shells, shell-less) egg quality are reported.

单词	Avian infectious bronchitis
释义	Avian infectious bronchitis 英语百科 Avian infectious bronchitis Avian infectious bronchitis (IB) is an acute and highly contagious respiratory disease of chickens. The disease is caused by avian infectious bronchitis virus (IBV), a coronavirus, and characterized by respiratory signs including gasping, coughing, sneezing, tracheal rales, and nasal discharge. In young chickens, severe respiratory distress may occur. In layers, respiratory distress, nephritis, decrease in egg production, and loss of internal (watery egg white) and external (fragile, soft, irregular or rough shells, shell-less) egg quality are reported.
随便看	primary treatment of wastes的意思 primary treatment plant的意思 Primary trend的意思 Primary triad的意思 primary triangle的意思 primary triangulation的意思 primary triangulation net的意思 primary triangulation point的意思 primary trigeminal neuralgia的意思 primary trisomic的意思 primary trisomy的意思 primary trochoblast的意思 primary troostite的意思 primary trophoblast的意思 primary truss的意思 primary tubercle的意思 primary tuberculosis的意思 primary tuberculosis syndrome的意思 primary tuberculous complex的意思 primary tuberculous infection的意思 primary tubular acidosis的意思 Primary tumor的意思 primary tumor of diaphragm的意思 primary tumor of duodenum的意思 primary tumor of heart的意思