Understanding the direct and indirect impacts of disease response phenotypes on chicken coccidiosis epidemiology: A modelling approach
Marie Ithurbide, Marie-Hélène Pinard van der Laan, Yuqi Gao, Andries D. Hulst, Mart C.M. De Jong, Andrea Doeschl-Wilson, Shawky Aboelhadid, Sanaullah Sajid, Sanaullah Sajid, Sanaullah Sajid
TL;DR
This paper uses a model to study how different traits in chickens affect coccidiosis spread and farm profitability, suggesting strategies to manage the disease.
Contribution
The paper introduces an epidemiological model to assess the direct and indirect impacts of five traits on coccidiosis management in poultry.
Findings
Increasing recoverability and tolerance improves flock health and productivity through direct and indirect effects.
Reducing infectivity most effectively lowers the infectious load in the environment and enhances flock protection.
The model can guide disease control strategies to enhance coccidiosis management in poultry.
Abstract
Coccidiosis, a widespread disease in poultry caused by protozoan parasites of the genus Eimeria, leads to significant economic losses. The increasing resistance of Eimeria species to anti-parasitics, combined with the high cost of vaccines, underscores the need for alternative intervention strategies against coccidiosis. This article explores the relative impact of several traits on the health of the group, accounting for the population dynamics of the infection. We focus on five traits that can potentially be influenced by genetic selection, treatment, vaccination or nutrition: (1) susceptibility, (2) recoverability, (3) infectivity, (4) tolerance, and (5) compensatory growth occurring after the infection ends. We propose an epidemiological model of coccidiosis based on literature review concerning chicken coccidiosis epidemiology and parameter estimations based on published data.…
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Taxonomy
TopicsCoccidia and coccidiosis research · Helminth infection and control · Bird parasitology and diseases