P.M Poultry Diseases 4th year series By Mohamed Mahmoud Salem gab AllahAssistant lecturer of pathology Faculty of Veterinary Medicine, Benha University, Moshtohor, Tukh; 13736 , Qalyuobia, EGYPT
Morphologic Diagnosis Eye, infraorbital sinus, and nasal cavity: Severe acute catarrhal and suppurative conjunctivitis, sinusitis, and cellulitis Clinical Description The severity of Infectious Coryza (Avibacterium paragallinarum) depends on age, breed, environmental stress, and the presence of concurrent infection. In young adult chickens, the severe form of the disease often occurs. Here, the characteristic signs of facial swelling, eyelids that are swollen closed, and nasal discharge can be seen. Pathologic Description The head area, ocular tissue, and wattles are significantly swollen and there is a thick brown discharge from the eye and nares.
Morphologic Diagnosis Head and face: Acute diffuse sinusitis and cellulitis with catarrhal and suppurative rhinitis and conjunctivitis. Clinical Description Edema of the subcutaneous tissue, as shown here, can be quite severe and involve the periorbital region and infraorbital sinuses. Edema may also extend into the intermandibular space. Nasal discharge may range from serous to mucoid or purulent (as shown here). Infected birds typically have reduced feed consumption and growth and a drop in egg production. Pathologic Description The subcutaneous tissues of the head are swollen and there is a thick discharge from the nose. A small amount of clear discharge is present in the eye. Additionally, the area over the infraorbital sinus is swollen.
Morphologic Diagnosis Air sacs: Severe diffuse
caseous airsacculitis. Clinical Description Airsacculitis, seen here, is an uncommon finding associated with Infectious Coryza. Pathologic Description The coelomic cavity has been opened to reveal the air sacs. The air sacs are thickened by large amounts of thick yellow, pasty material.
Morphologic Diagnosis Eye: Severe fibrinosuppurative conjunctivitis Clinical Description Ocular involvement may be very severe, with the eyelids swollen closed and copious amounts of suppurative discharge present. Rarely, lower respiratory lesions such as pneumonia and airsacculitis may be found. Pathologic Description The eye is completely covered by a thick layer of pale tan friable material and the periocular skin is swollen.
Morphologic Diagnosis Head and face: Catarrhal and suppurative sinusitis with edema and conjunctivitis Clinical Description On post-mortem examination, chickens infected with the severe form of Infectious Coryza (Avibacterium paragallinarum), subcutaneous edema may be found in the face, wattles, and intermandibular region. Pathologic Description There is a small amount of clear mucoid nasal discharge and the eyelids and skin around the eye is swollen.
Morphologic Diagnosis Infraorbital sinus: Catarrhal and
suppurative sinusitis Clinical Description The conjunctivae may have inflammation and catarrhal lesions, as shown here. Pathologic Description The skin of the head of this chicken has been removed to reveal the lumen of the infraorbital sinus. The sinus is filled by a large amount of thick yellow slightly mucoid material.
ORGAN : LESIONS : SUSP.DIS. :
Head of chicken Facial edema with nasal discharge Infectious coryza
STAPHYLOCOCCUS INFECTION
ORGAN : LESIONS : SUSP.DIS. :
Hock joint Synovitis Staphylococcal infection
ORGAN : LESIONS : SUSP.DIS. :
Cross section of long bone Erosion of the cartilage and arthritis Chronic Staphylococcal infection
ORGAN : LESIONS : SUSP.DIS. :
Pelvic cavity Arthritis Staphylococcal infection
ORGAN : LESIONS : SUSP.DIS. :
Hock joint Arthritis with turbidity of synovial fluid Staphylococcal infection
ORGAN : LESIONS : SUSP.DIS. :
Liver Necrotic focci Staphylococcal infection
ORGAN : LESIONS : SUSP.DIS. :
liver sub capsular hemorrhages and necrosis Staphylococcal infection
ORGAN : liver LESIONS: Necrosis SUSP.DIS: Staphylococcal infection
ORNITHIOSIS
ORGAN : LESIONS : SUSP.DIS. :
Head of pigeon Severe conjunctivitis Ornithosis
ORGAN : LESIONS : SUSP.DIS. :
Head of pigeon Severe conjunctivitis Ornithosis
ORGAN : LESIONS : SUSP.DIS. :
Liver Fatty infiltration Chronic Ornithosis
ORGAN : LESIONS : SUSP.DIS. :
Liver Perihepatitis Ornithosis
ORGAN : Heart LESIONS : Fibrinous pericarditis
SUSP.DIS. : Ornithosis
ORGAN : LESIONS : SUSP.DIS. :
Pelvic cavity Fibrinous pericarditis and air saculitis Ornithosis
ORGAN : LESIONS : SUSP.DIS. :
Chest cavity Fibrinous pericarditis and air saculitis Ornithosis
Impression smear showing small red dots (elementary body) SUSP.DIS. : Ornithosis
ORGAN : LESIONS : SUSP.DIS. :
Cut section in Liver Necrosis Campylobacteriosis
ORGAN : LESIONS : SUSP.DIS. :
Liver Satellite foci Campylobacteriosis
ORGAN : LESIONS : SUSP.DIS. :
Spleen Enlarged spleen with infarction compared with normal spleen
Campylobacteriosis
ORGAN : LESIONS : SUSP.DIS. :
Heart Necrosis in myocardium Campylobacteriosis
ORGAN : LESIONS : SUSP.DIS. :
Liver Sub capsular hemorrhages and Necrosis Campylobacteriosis
ORGAN : LESIONS : SUSP.DIS. :
Chest cavity Hydropericardium Campylobacteriosis