Occurrence of Newcastle Disease in Iranian Broiler Farms During 2013-2015

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Alian Samakkhah Shohre; BAHONAR ALIREZA; Zaynolabedini Tehrani Farshad; GHAFOURI SEYED ALI; SADRZADEH AVESTA; Fallah Mehrabadi Mohammad Hosein

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Journal: Journal of Veterinary Research Year:2019 | Volume:74 | Issue:1 Page(s): 1-10

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Title

Occurrence of Newcastle Disease in Iranian Broiler Farms During 2013-2015

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Keywords

Newcastle diseaseQ2

Broiler chickenQ2

Case seriesQ1

PathotypeQ2

RT-PCRQ2

Abstract

BACKGROUND: Among infectious diseases, Newcastle disease, due to being highly contagious and its rapid spread among poultry and other bird species, is a deadly viral disease and is considered a global threat to the poultry industry. Objectives: To determine the occurrence of Newcastle disease in poultry broiler farms reported to the Iranian veterinary organization during the study period. Methods: This is a cross-sectional study from September 2013 to March 2015. During this study, from 185 farms and a total of 3700 bird sera, cloacal and tracheal swabs were sampled and tested using a haemagglutination inhibition test and reverse transcriptase polymerase chain reaction respectively. Results: In this study, of a total of 185 farms reported to the Iranian Veterinary Organization, 115 farms (62. 16%, 95%CI: 55. 17-69. 14) were positive for Newcastle disease viruses and then using specific primers, 69 farms (37. 3%, 95%CI: 30. 33-44. 26) had vaccinal Pathotype (non-acute) and 46 farms (25%, 95%CI: 18. 76-31. 23) had acute Pathotype (field virus). The mean± SD age of infected poultry was 24. 63± 5. 38 days and antibodies titer against Newcastle disease virus was 5. 97± 1. 21. The highest mortality rates were observed in the spring (32. 34%) and winter (26. 9%), respectively. Mazandaran (37%) and Isfahan (22%) province had the highest percentage of farms with Newcastle disease. Conclusions: The findings of this study suggested virulent Newcastle virus strains are circulating in the Iranian commercial broiler farms in the mentioned time and with high occurrence. Therefore, the relevant authorities need to make correct decisions to reduce the risk of Newcastle disease in the Iranian poultry industry and its control.

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APA: Copy

Alian Samakkhah, Shohre, BAHONAR, ALIREZA, Zaynolabedini Tehrani, Farshad, GHAFOURI, SEYED ALI, SADRZADEH, AVESTA, & Fallah Mehrabadi, Mohammad Hosein. (2019). Occurrence of Newcastle Disease in Iranian Broiler Farms During 2013-2015. JOURNAL OF VETERINARY RESEARCH, 74(1 ), 1-10. SID. https://sid.ir/paper/34913/en

Vancouver: Copy

Alian Samakkhah Shohre, BAHONAR ALIREZA, Zaynolabedini Tehrani Farshad, GHAFOURI SEYED ALI, SADRZADEH AVESTA, Fallah Mehrabadi Mohammad Hosein. Occurrence of Newcastle Disease in Iranian Broiler Farms During 2013-2015. JOURNAL OF VETERINARY RESEARCH[Internet]. 2019;74(1 ):1-10. Available from: https://sid.ir/paper/34913/en

IEEE: Copy

Shohre Alian Samakkhah, ALIREZA BAHONAR, Farshad Zaynolabedini Tehrani, SEYED ALI GHAFOURI, AVESTA SADRZADEH, and Mohammad Hosein Fallah Mehrabadi, “Occurrence of Newcastle Disease in Iranian Broiler Farms During 2013-2015,” JOURNAL OF VETERINARY RESEARCH, vol. 74, no. 1 , pp. 1–10, 2019, [Online]. Available: https://sid.ir/paper/34913/en

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