Colibacillosis (Coliform infections in Poultry)
|
Jogita Moirangthem
Contd from previous issue
Microscopically, suppurative air sacculitis and fibrinous pericarditis.
7. Omphalitis (Yolk sac disease/Mushy chick disease)
A disease of newly hatched chicks & characterized by presence of thin, watery, coagulated unabsorved yolk.
Symptoms: Sleepiness and aggregation near the source of heat.
PM findings:
Presence of unabsorved yolk.
Yolk becomes thin, watery with precipitates.
Yolk sac membrane becomes thickened due to congestion and exudate.
Microscopically, focal necrotic hepatitis, congestion and infiltration of heterophils in yolk sac membrane.
Panopthalmitis : Generalized infection of both eyes of chicks- a hatchery borne malady. Birds after hatching may show the occular problem.
Diagnosis
Signs and symptoms.
PM findings/ lesions.
Cultural examination- Isolation & identification (Heart blood and duodenal contents).
Indirect haemagglutination test (IHT) and Elisa are sensitive methods for detecting Abs to pathogenic E.coli.
Gram’s staining of impression smears made from nodules in Coligranuloma. The writer is a student of 3rd year, BVSc and AH College of Veterinary Science and Animal Husbandry, Seleish, Aizawl Mizoram
Contd from previous issue
Microscopically, suppurative air sacculitis and fibrinous pericarditis.
7. Omphalitis (Yolk sac disease/Mushy chick disease)
A disease of newly hatched chicks & characterized by presence of thin, watery, coagulated unabsorved yolk.
Symptoms: Sleepiness and aggregation near the source of heat.
PM findings:
Presence of unabsorved yolk.
Yolk becomes thin, watery with precipitates.
Yolk sac membrane becomes thickened due to congestion and exudate.
Microscopically, focal necrotic hepatitis, congestion and infiltration of heterophils in yolk sac membrane.
Panopthalmitis : Generalized infection of both eyes of chicks- a hatchery borne malady. Birds after hatching may show the occular problem.
Diagnosis
Signs and symptoms.
PM findings/ lesions.
Cultural examination- Isolation & identification (Heart blood and duodenal contents).
Indirect haemagglutination test (IHT) and Elisa are sensitive methods for detecting Abs to pathogenic E.coli.
Gram’s staining of impression smears made from nodules in Coligranuloma. The writer is a student of 3rd year, BVSc and AH College of Veterinary Science and Animal Husbandry, Seleish, Aizawl Mizoram