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Abstract
This study was carried out on (1348) cow calves in different herds in Sharkia Governorate. Clinical examination of animals revealed that 303 calves showed different clinical findings and accordingly they were
classified into 4 groups as the following: Group (1): including 41 calves were suffered from respiratory symptoms including coughing and presence of serous nasal discharge. By auscultation, the breath sounds are increased especialJy over the cranioventral aspect of the lung. Crackles (moist rales) develop due to increasing of bronchiolar exudation. Consolidation also causes increased audibility of the heart sounds. Body temperature ranged from (39-41 °C). Group (2): including 118 calves were suffered from respiratory symptoms and enteric symptoms varied from mild to profuse watery diarrhea, weakness, severe depression, lethargy, unable to stand, arched back, offfood and variable degrees of dehydration. Group (3): including 18 calves showed respiratory symptoms and eye affection in the form of congestion of the mucous membrane of the affected eye, lachrymation and some of the affected animals showed cornial opacity. Group (4): including 126 calves were affected with respiratory symptoms, enteric symptoms and eye affection.