Review: Livestock disease resilience: From individual to herd level

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Title: Review: Livestock disease resilience: From individual to herd level
Authors: Doeschl-Wilson, A.Knap, P. W.Opriessnig, T.More, Simon John
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Date: Dec-2021
Online since: 2022-08-29T14:52:10Z
Abstract: Infectious diseases are a major threat to the sustainable production of high-producing animals. Control efforts, such as vaccination or breeding approaches often target improvements to individual resilience to infections, i.e., they strengthen an animal's ability to cope with infection, rather than preventing infection per se. There is increasing evidence for the contribution of non-clinical carriers (animals that become infected and are infectious but do not develop clinical signs) to the overall health and production of livestock populations for a wide range of infectious diseases. Therefore, we strongly advocate a shift of focus from increasing the disease resilience of individual animals to herd disease resilience as the appropriate target for sustainable disease control in livestock. Herd disease resilience not only captures the direct effects of vaccination or host genetics on the health and production performance of individuals but also the indirect effects on the environmental pathogen load that herd members are exposed to. For diseases primarily caused by infectious pathogens shed by herd members, these indirect effects on herd resilience are mediated both by individual susceptibility to infection and by characteristics (magnitude of infectiousness, duration of infectious period) that influence pathogen shedding from infected individuals. We review what is currently known about how vaccination and selective breeding affect herd disease resilience and its underlying components, and outline the changes required for improvement. To this purpose, we also seek to clarify and harmonise the terminology used in the different animal science disciplines to facilitate future collaborative approaches to infectious disease control in livestock.
Type of material: Journal Article
Publisher: Elsevier
Journal: Animal
Volume: 15
Copyright (published version): 2021 the Authors
Keywords: BreedingDisease resistanceDisease transmissionInfectious diseaseVaccination
DOI: 10.1016/j.animal.2021.100286
Language: en
Status of Item: Peer reviewed
ISSN: 1751-7311
This item is made available under a Creative Commons License:
Appears in Collections:Veterinary Medicine Research Collection
CVERA Research Collection

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