2021
DOI: 10.1007/s00705-021-05034-w
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Detection and characterization of chicken astrovirus associated with hatchery disease in commercial day-old turkeys in southwestern Nigeria

Abstract: Infectious diseases are a major obstacle to profitable poultry production in Nigeria due to the mortality and severe economic losses they cause. In particular, they are a potent threat to attainment of the food security goals of government and national self-sufficiency in food production. Thus, there is a need for continuous monitoring of the nation's poultry population for these diseases. As part of an ongoing investigation of enteric viruses associated with poor performance or hatchery diseases in commercial… Show more

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Cited by 7 publications
(7 citation statements)
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References 33 publications
(50 reference statements)
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“…Like other known astroviruses, CAstV infects mostly young animals of commercially reared chickens and turkeys [4,54,55]. The virus primarily infects the broiler-type of chicken, which happens to be the type of bird the virus was first isolated from in [13].…”
Section: Transmissionmentioning
confidence: 99%
“…Like other known astroviruses, CAstV infects mostly young animals of commercially reared chickens and turkeys [4,54,55]. The virus primarily infects the broiler-type of chicken, which happens to be the type of bird the virus was first isolated from in [13].…”
Section: Transmissionmentioning
confidence: 99%
“…Recent literature has proposed RT-qPCR as an alternative for diagnosing astroviruses such as ANV. However, hydrolysis probes' high cost and instability hinder their application and validation [ 34 ], and the use of NGS also demands high cost and in the country its use is limited. On the other hand, conventional PCR is a good tool for the detection of ANV [ 33 ], however, it requires more laboratory work and time for the release of the results, in addition to not allowing the quantification of viral particles.…”
Section: Discussionmentioning
confidence: 99%
“…Chicken astrovirus infections are of clinical and economic concern due to their negative impact on production, owing to the increased severity of clinical symptoms and extra-intestinal involvement. Although other viruses have been implicated in cases of RSS, underperformance, and growth checks, recent studies have identified CAstV as the sole etiologic pathogen responsible for the condition in chickens and turkeys (10,12,20,39). Similarly, DNA and RNA extracted from birds exhibiting underperformance, growth checks, and amplified using various enteric virus-specific primers were consistently positive for CAstV but negative for other enteric viruses (9,17,40).…”
Section: Chicken Astrovirus (Castv) Associated Diseasesmentioning
confidence: 99%
“…Similarly, a serosurvey on poultry abattoir workers has shown that the antibodies against turkey astrovirus are three times higher in the turkey processing workers when compared to the workers not in contact with turkey (19). Recently, CAstV was detected in cases of runting in day-old commercial turkey poults in southwestern Nigeria (20), and conceivably, this finding evidenced the possibility of cross-species transmission of CAstV to other avian species.…”
Section: Introductionmentioning
confidence: 97%