| 
              
              
              Open Access  
Copyright: The authors. This article is an open access 
article licensed under the terms of the Creative Commons Attribution License 
 
 
(http://creativecommons.org/licenses/by/2.0) which permits unrestricted use, 
distribution and reproduction in any medium, provided the work is properly 
cited. 
 
              
              
              Research 
              
              
(Published online: 
              09-10-2015) 
              4.
              Hemato-biochemical and 
              pathological changes on avian influenza in naturally infected 
              domestic ducks in Egypt - Essam A. 
              Mahmoud 
              
              Veterinary World, 8(10): 1177-1182   
              
   
                
                
doi: 
              10.14202/vetworld.2015.1177-1182   
              Essam A. Mahmoud: Department of Clinical Pathology, Faculty of 
              Veterinary Medicine, Zagazig University, Zagazig City, Sharkia 
              Province, Egypt;
              
              essammahmoud97@yahoo.com   
              Received: 22-05-2015, Revised: 29-08-2015, Accepted: 07-09-2015, 
              Published online: 09-10-2015   
              
              
              Corresponding author:Essam A. Mahmoud, e-mail: essammahmoud97@yahoo.com 
 
              Citation:Mahmoud EA (2015) 
              Hemato-biochemical and pathological changes on avian influenza in 
              naturally infected domestic ducks in Egypt, Veterinary World 8(10): 
              1177-1182. 
 
              Abstract 
 Aim:
              Few studies have been made in regard to 
              avian influenza (AI) in 
              ducks, thus the aim of this work was planned to investigate the 
              hematological, biochemical, and pathological changes in domestic 
              Egyptian ducks naturally infected with AI. 
              Materials and Methods: 30 duck from private backyards 
              3-month-old 15 were clinically healthy (Group 1) and the other 
              fifteen (Group 2) were naturally diseased with AI (H5N1). The 
              disease was diagnosed by polymerase chain reaction as H5N1. 
              Results: Duck showed cyanosis, subcutaneous edema of head and 
              neck with nervous signs (torticollis). Hematological studies 
              revealed a microcytic hypochromic anemia. Biochemical studies 
              revealed a significant decrease in total protein, albumin and 
              globulin concentration with significant increase of activities of 
              aspartate aminotransferase, alanine aminotransferase, alkaline 
              phosphatase, Υ-glutamyl transpeptidase, lactic acid dehydrogenase 
              and creatine phsphokinase. Prominent increase in creatinine and 
              uric acid in addition to hypocalcemia and hyperphosphatemia were 
              significantly detected in the infected ducks. Histopathological 
              finding confirm these investigations.  
              Conclusion: The highly pathogenic AIV (A/H5N1) became more 
              severe infectious to ducks than before and causes nervous 
              manifestations and blindness which were uncommon in ducks. Besides 
              the significant increases of hepatic enzymes, brain, heart, and 
              renal markers as a response to virus damage to these organs. 
              Keywords: aminotranseferases, anemia, avian 
              influenza, creatinine, ducks, uric acid. 
 
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