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Histopathology and Cytology of
Poultry Diseases By Ivan Dinev, DVM, PhD
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RUPTURE OF THE RIGHT AURICLE (RRA) IN BROILER CHICKENS
Fig. 1. The right auricle rupture is characterized by sudden death, generally in broiler chickens at the age of 10 - 14 days. Macroscopically, haemopericardium, overfilled vena cava and rupture at the site of communication with the auricle are observed. Common histological findings are the haemorrhages and degenerative myocardial lesions. H/E, Bar = 25 µm.
Fig. 2. RRA in a 14-day-old broiler chicken. Oedema and haemorrhages in the lungs. H/E, Bar = 35 µm.
Fig. 3. RRA, liver, the case in Fig. 2. Congestive hyperaemia and haemosiderosis in the liver. H/E, Bar = 40 µm.
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