A Review of the Emerging White Chick Hatchery Disease

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dc.contributor.authorMcIlwaine, Kerry
dc.contributor.authorLaw, Christopher J.
dc.contributor.authorLemon, Kenneth
dc.contributor.authorGrant, Irene R.
dc.contributor.authorSmyth, Victoria
dc.date.accessioned2021-12-15T12:10:59Z
dc.date.available2021-12-15T12:10:59Z
dc.date.issued2021-12-04
dc.descriptionPublication history: Accepted - 30 November 2021; Published online - 4 December 2021.en_US
dc.description.abstractWhite chick hatchery disease is an emerging disease of broiler chicks with which the virus, chicken astrovirus, has been associated. Adult birds typically show no obvious clinical signs of infection, although some broiler breeder flocks have experienced slight egg drops. Substantial decreases in hatching are experienced over a two-week period, with an increase in mid-to-late embryo deaths, chicks too weak to hatch and pale, runted chicks with high mortality. Chicken astrovirus is an enteric virus, and strains are typically transmitted horizontally within flocks via the faecal–oral route; however, dead-in-shell embryos and weak, pale hatchlings indicate vertical transmission of the strains associated with white chick hatchery disease. Hatch levels are typically restored after two weeks when seroconversion of the hens to chicken astrovirus has occurred. Currently, there are no commercial vaccines available for the virus; therefore, the only means of protection is by good levels of biosecurity. This review aims to outline the current understanding regarding white chick hatchery disease in broiler chick flocks suffering from severe early mortality and increased embryo death in countries worldwideen_US
dc.description.sponsorshipThis work was supported by the Department of Agriculture, Environment and Rural Affairs (NI) under Grant 18/1/14 and the author was in receipt of Houghton Trust (Avian Pathology) small project award.en_US
dc.identifierhttp://hdl.handle.net/20.500.12518/380
dc.identifier.citationMcIlwaine, K., Law, C.J., Lemon, K., Grant, I.R. and Smyth, V.J. (2021) ‘A Review of the Emerging White Chick Hatchery Disease’, Viruses. MDPI AG. doi:10.3390/v13122435.en_US
dc.identifier.issn1999-4915
dc.identifier.urihttps://doi.org/10.3390/v13122435
dc.publisherMDPIen_US
dc.rights© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).en_US
dc.subjectwhite chicken_US
dc.subjecthatchery diseaseen_US
dc.subjectchicken astrovirusen_US
dc.subjectvertical transmissionen_US
dc.titleA Review of the Emerging White Chick Hatchery Diseaseen_US
dc.typeArticleen_US
dcterms.dateAccepted2021-11-30
dcterms.dateSubmitted2021-10-27

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