Experimental infection of pheasants with a velogenic chicken isolate of Newcastle disease virus

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JAFARI RAMEZAN ALI; REZAIE ANAHITA; Boroomand Zahra; MAYAHI MANSOOR; ZARE REZA

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Journal: IRANIAN JOURNAL OF VETERINARY SCIENCE AND TECHNOLOGY Year:2019 | Volume:11 | Issue:1 Page(s): 7-12

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Title

Experimental infection of pheasants with a velogenic chicken isolate of Newcastle disease virus

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Keywords

Immune response

Newcastle disease

Pheasant

Virus shedding

Abstract

Newcastle disease (ND) is a highly contagious infection of many avian species, causing enormous losses in poultry production worldwide. Th e objective of this study was to reveal the clinical feature, Virus shedding, and Immune response following infection with a velogenic chicken isolate of Newcastle disease virus (NDV) in susceptible and vaccinated Pheasants. Eighty day-old Pheasant chicks were allotted to four groups. At 30 days of age, the birds in groups 1 and 3 were vaccinated with B1 strain via eye drop. Two weeks later, each bird in groups 1 and 2 was inoculated with 100 μ L (50 μ L/eye) of NDV-infected allantoic fl uid containing 105 EID50 of viral inoculum. All groups were inspected daily for three weeks. Swab samples were taken at diff erent time points, and verifi ed for NDV infection by using reverse-transcription polymerase chain reaction (RT-PCR). Serological examination was also made by haemagglutination-inhibition assay. Clinically, watery mucoid feces was observed only in one case among the vaccinated challenged birds, whereas the unvaccinated challenged birds showed anorexia, mild depression and head deviation. Out of 20 birds in group 2, one case (5%) died. Based on RT-PCR, Virus shedding was only observed among the unvaccinated birds from 5 to 14 days aft er challenge. Th e NDV was detected more in tracheal swabs (40%) than in cloacal swabs (30%). Th e infected birds showed a high seroconversion. In conclusion, the velogenic NDV circulating in Iranian chicken fl ocks has a low pathogenicity for Pheasants, and ocular vaccination with B1 strain could provide a good protection.

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APA: Copy

JAFARI, RAMEZAN ALI, REZAIE, ANAHITA, Boroomand, Zahra, MAYAHI, MANSOOR, & ZARE, REZA. (2019). Experimental infection of pheasants with a velogenic chicken isolate of Newcastle disease virus. IRANIAN JOURNAL OF VETERINARY SCIENCE AND TECHNOLOGY, 11(1 ), 7-12. SID. https://sid.ir/paper/269150/en

Vancouver: Copy

JAFARI RAMEZAN ALI, REZAIE ANAHITA, Boroomand Zahra, MAYAHI MANSOOR, ZARE REZA. Experimental infection of pheasants with a velogenic chicken isolate of Newcastle disease virus. IRANIAN JOURNAL OF VETERINARY SCIENCE AND TECHNOLOGY[Internet]. 2019;11(1 ):7-12. Available from: https://sid.ir/paper/269150/en

IEEE: Copy

RAMEZAN ALI JAFARI, ANAHITA REZAIE, Zahra Boroomand, MANSOOR MAYAHI, and REZA ZARE, “Experimental infection of pheasants with a velogenic chicken isolate of Newcastle disease virus,” IRANIAN JOURNAL OF VETERINARY SCIENCE AND TECHNOLOGY, vol. 11, no. 1 , pp. 7–12, 2019, [Online]. Available: https://sid.ir/paper/269150/en

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