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Original Article 


Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates

Noha Ayyoub, Abdelkarim A. Mahmoud, Adel M. Khadr, Tharwat Elsheimy, Amir H. Abdelrahman, Osama M. Abbas.

Abstract
Bovine respiratory disease (BRD) is the most important cause of clinical disease and death in feedlot cattle. Respiratory viral infections are key components in predisposing cattle to the development of this disease, which allow secondary bacterial infection and disease development. This study was designed to investigate the prevalence of bovine respiratory disease complex in beef farms at Alexandria and Elbehera Governorates.
Six beef farms have 3230 fattening calves 6-12 months age were clinically examined for respiratory disease complex. 971 animals were having respiratory signs at a percentage of 30% with variable prevalence in the 6 farms.
Deep nasal swabs were collected from diseased animals and investigated for Bovine herpesvirus type one (BHV-1) by conventional polymerase chain reaction (PCR) and for bacteriological examination. PCR could detect BHV-1 infection in 3 samples out of 40 samples examined and the main bacteria isolated from diseased animals were Pasteurella multocida and Pseudomonas aerugeinosa.
In conclusion, Bovine herpesvirus type one is one of the major pathogens causing respiratory signs in beef cattle and predispose cattle to bovine respiratory disease complex. And pastuerella multocida is secondary bacterial invader which cause the disease. The role of pseudomonas aeruginosa as a causes of respiratory diseases needs further studies.

Key words: BRDC, BHV-1, P. multocida, P. aeruginosa


 
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Pubmed Style

Ayyoub N, Mahmoud AA, Khadr AM, Elsheimy T, Abdelrahman AH, Abbas OM. Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates. AJVS. 2019; 60(1): 116-122. doi:10.5455/ajvs.18459

Web Style

Ayyoub N, Mahmoud AA, Khadr AM, Elsheimy T, Abdelrahman AH, Abbas OM. Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates. https://www.alexjvs.com/?mno=18459 [Access: December 06, 2023]. doi:10.5455/ajvs.18459

AMA (American Medical Association) Style

Ayyoub N, Mahmoud AA, Khadr AM, Elsheimy T, Abdelrahman AH, Abbas OM. Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates. AJVS. 2019; 60(1): 116-122. doi:10.5455/ajvs.18459


Vancouver/ICMJE Style

Ayyoub N, Mahmoud AA, Khadr AM, Elsheimy T, Abdelrahman AH, Abbas OM. Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates. AJVS. (2019), [cited December 06, 2023]; 60(1): 116-122. doi:10.5455/ajvs.18459


Harvard Style

Ayyoub, N., Mahmoud, . A. A., Khadr, . A. M., Elsheimy, . T., Abdelrahman, . A. H. & Abbas, . O. M. (2019) Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates. AJVS, 60 (1), 116-122. doi:10.5455/ajvs.18459


Turabian Style

Ayyoub, Noha, Abdelkarim A. Mahmoud, Adel M. Khadr, Tharwat Elsheimy, Amir H. Abdelrahman, and Osama M. Abbas. 2019. Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates. Alexandria Journal of Veterinary Sciences, 60 (1), 116-122. doi:10.5455/ajvs.18459


Chicago Style

Ayyoub, Noha, Abdelkarim A. Mahmoud, Adel M. Khadr, Tharwat Elsheimy, Amir H. Abdelrahman, and Osama M. Abbas. "Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates." Alexandria Journal of Veterinary Sciences 60 (2019), 116-122. doi:10.5455/ajvs.18459


MLA (The Modern Language Association) Style

Ayyoub, Noha, Abdelkarim A. Mahmoud, Adel M. Khadr, Tharwat Elsheimy, Amir H. Abdelrahman, and Osama M. Abbas. "Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates." Alexandria Journal of Veterinary Sciences 60.1 (2019), 116-122. Print. doi:10.5455/ajvs.18459


APA (American Psychological Association) Style

Ayyoub, N., Mahmoud, . A. A., Khadr, . A. M., Elsheimy, . T., Abdelrahman, . A. H. & Abbas, . O. M. (2019) Molecular and Epidemiological Studies on Bovine Respiratory Disease Complex (BRDC) with Special Reference to IBR in Alexandria and El-Behera Governorates. Alexandria Journal of Veterinary Sciences, 60 (1), 116-122. doi:10.5455/ajvs.18459




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    The Alexandria Journal of Veterinary Sciences (AJVS) Official Journal of Faculty of Veterinary Medicine, Alexandria University   ISSN: 1110 ... Read more.



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