Role of Pigeons in the Transmission of Avian Avulavirus (Newcastle Disease-Genotype VIId) to Chickens

Autor:	Rasha E. Zedan, Hani Ba-Awadh, Ayman E. Taha, Islam M. Saadeldin, Ahmed R. Elbestawy, Hatem S. Abd El-Hamid, Hany F. Ellakany, Mohamed A. Soliman, Elsayed O.S. Hussein, Ahmed R. Gado, Ayman A. Swelum, Mohamed E. Abd El-Hack
Rok vydání:	2019
Předmět:	Veterinary medicine animal structures pigeons chemical and pharmacologic phenomena Biology Newcastle disease Article Virus shedding NDV genotype VIId lcsh:Zoology parasitic diseases Genotype oropharyngeal lcsh:QL1-991 Viral shedding lcsh:Veterinary medicine broilers General Veterinary Transmission (medicine) Broiler food and beverages biology.organism_classification contact infection lcsh:SF600-1100 Avulavirus Animal Science and Zoology cloacal Cloaca psychological phenomena and processes
Zdroj:	Animals : an Open Access Journal from MDPI Animals Volume 9 Issue 6 Animals, Vol 9, Iss 6, p 338 (2019)
ISSN:	2076-2615
DOI:	10.3390/ani9060338
Popis:	Simple Summary Newcastle disease is an acute fatal disease of poultry. All broiler chickens and 8/15 pigeons were killed when infected intramuscularly (IM), while 7/10 chickens and only 1/15 pigeons were killed when infected intranasally (IN) with the virus in an experimental setting. Chickens in contact with infected pigeons developed severe respiratory, digestive and nervous signs. The mortality rates in chickens in contact with IM and IN infected pigeons were 2/5 and 3/5, respectively. Chickens in contact with IM infected pigeons had higher viral shedding titres than those in contact with IN infected pigeons. Free-range pigeons are considered an efficient carrier and transmitter of NDV-VIId to commercial broiler chickens raised in open houses. Abstract Newcastle disease is an acute fatal disease of poultry. The aim of this study was to determine the dynamics of the transmission of avian avulavirus (velogenic viscerotropic Newcastle disease-genotype VIId) from either intramuscularly (IM)- or intranasally (IN) infected 8-week-old Egyptian Baladi pigeons in contact with commercial Arbor Acres broiler chickens (4 weeks of age). The mortality of IM infected chickens and pigeons was 10/10 for chickens and 8/15 for pigeons, while the mortality of IN infected chickens and pigeons was 7/10 for chickens and only 1/15 for pigeons. The concentration of viral shedding in the oropharynx was higher than that in the cloaca for both IN and IM infected pigeons. Pigeons infected IN continued shedding the virus from the oropharynx from the 4th day post-infection (dpi) up to the 16th dpi, while IM infected pigeons stopped oropharyngeal shedding at the 11th dpi. Chickens in contact with infected pigeons developed severe respiratory, digestive and nervous signs. The mortality rates in chickens in contact with IM and IN infected pigeons were 2/5 and 3/5, respectively. Chickens in contact with IM infected pigeons showed higher viral shedding titres in both the oropharynx and cloaca than chickens in contact with pigeons infected IN. In conclusion, free-range pigeons are considered an efficient carrier and transmitter of NDV-VIId compared to commercial broiler chickens raised in open houses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52038bb5d50e5ef4921da278502c7d5a https://doi.org/10.3390/ani9060338 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.