New PDF release: A Colour Atlas of Poultry Diseases: An Aid for Farmers and

By J.L. Vegad

ISBN-10: 8181891309

ISBN-13: 9788181891303

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Additional resources for A Colour Atlas of Poultry Diseases: An Aid for Farmers and Poultry Professionals

Sample text

F. coli infection (Colisepticaemia) in yet another 30-day-old broiler chicken. The fibrin layer on the liver in this bird is so thick that it appears as a yellowish, opaque, adherent, caseous (cheese-like) deposition. This is an advanced stage of E. coli infection. Fig. 56. f. coli infection (Colisepticaemia) in a 34-day-old broiler chicken. Note thick, yellowish , adherent, caseous fibrinous material on the liver. This is characteristic of the advanced stage of E. coli infection. 40 BAC T ERIAL DISEASES A COLOUR ATLAS OF POULTRY D ISEASES Fig.

5. Bad sanitary and hygienic conditions help in the spread of the disease. Symptoms Fowl pox can occur at any age. There are two forms of the disease: (I) skin or cutaneous form (dry pox) , and diphtheritic form (wet form) . In the skin form, lesions (changes) appear on the unfeathered skin of the head, neck, comb, wattles, eyelids, legs, and feet. The lesions on the head , combs, and wattles are usually wart-like (nodular) in appearance, and yellow to dark brown in colour (Fig. 36, 37). In the diphtheritic form (wet form), small white nodules are observed in upper respiratory and digestive tracts.

T his is typical of blood infe ction by E. coli (Fig. 5 I, 52, 53, 54, 55 , 56, 57, 58, 59, 60) . 2. Infected airsacs are thickened and usually contain cheese-like material. 3. Rarely, in certain cases, liver presents a corn meal appearance. That is, it appears as if ground maize has been sprinkled on its surface (Fig. 61) . 3. Egg Peritonitis Egg peritonitis is inflammation of the peritoneum caused by the presence of a broken egg in the abdominal cavity. Postmortem findings include the presence of scattered pieces of yolk, thickened yolk, cheese-like material, or milky fluid in the abdominal cavity (Fig.

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A Colour Atlas of Poultry Diseases: An Aid for Farmers and Poultry Professionals by J.L. Vegad


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