Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysis
Gastrointestinal helminth parasites are a concern for the poultry industry worldwide as they can affect the health, welfare, and production performance. A systematic review of the prevalence over time in different countries may improve our understanding of gastrointestinal helminthiasis in chickens...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-05-01
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| Series: | Poultry Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0032579121001164 |
| _version_ | 1818942639006810112 |
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| author | Anwar Shifaw Teka Feyera Stephen W. Walkden-Brown Brendan Sharpe Timothy Elliott Isabelle Ruhnke |
| author_facet | Anwar Shifaw Teka Feyera Stephen W. Walkden-Brown Brendan Sharpe Timothy Elliott Isabelle Ruhnke |
| author_sort | Anwar Shifaw |
| collection | DOAJ |
| description | Gastrointestinal helminth parasites are a concern for the poultry industry worldwide as they can affect the health, welfare, and production performance. A systematic review of the prevalence over time in different countries may improve our understanding of gastrointestinal helminthiasis in chickens and subsequently lead to improved poultry health. The aim of this systematic review and meta-analysis was to provide an overview of the published information regarding the epidemiology and the diagnostic approaches of chicken helminth infection. Six databases were searched for studies, and a total of 2,985 articles published between 1942 and 2019 were identified and subsequently screened for eligibility using title or abstract and full text assessment, resulting in 191 publications to be used in the study. Postmortem diagnostics (73.8%) and the flotation technique (28.8%) were commonly used to detect helminth infections with a pooled prevalence of 79.4% ranging from 4 to 100%. More than 30 helminth species in chicken populations were identified including Ascaridia galli (35.9%), Heterakis gallinarum (28.5%), Capillaria spp. (5.90%), and Raillietina spp. (19.0%) being the most prevalent. The reported prevalence of helminth infection decreased over time in developing countries while it increased in the developed world. Chicken kept in backyard and free-range systems had a markedly higher pooled prevalence of helminth infection (82.6 and 84.8%, respectively) than those housed in cage production systems (63.6%). This may indicate the need for more rigorous control and prevention measures in free-range and backyard production systems using regular deworming coupled with access to early and accurate diagnosis allowing for early intervention. |
| first_indexed | 2024-12-20T07:14:37Z |
| format | Article |
| id | doaj.art-15d23752a1a24cfd9c23053030a555c1 |
| institution | Directory Open Access Journal |
| issn | 0032-5791 |
| language | English |
| last_indexed | 2024-12-20T07:14:37Z |
| publishDate | 2021-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Poultry Science |
| spelling | doaj.art-15d23752a1a24cfd9c23053030a555c12022-12-21T19:48:50ZengElsevierPoultry Science0032-57912021-05-011005101082Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysisAnwar Shifaw0Teka Feyera1Stephen W. Walkden-Brown2Brendan Sharpe3Timothy Elliott4Isabelle Ruhnke5Animal Science, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia; Corresponding author:Animal Science, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia; Department of Veterinary Clinical Studies, College of Veterinary Medicine, Jigjiga University, Jigjiga, EthiopiaAnimal Science, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, AustraliaInvetus Pty Ltd., Armidale, NSW 2350, AustraliaAnimal Science, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, AustraliaAnimal Science, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, AustraliaGastrointestinal helminth parasites are a concern for the poultry industry worldwide as they can affect the health, welfare, and production performance. A systematic review of the prevalence over time in different countries may improve our understanding of gastrointestinal helminthiasis in chickens and subsequently lead to improved poultry health. The aim of this systematic review and meta-analysis was to provide an overview of the published information regarding the epidemiology and the diagnostic approaches of chicken helminth infection. Six databases were searched for studies, and a total of 2,985 articles published between 1942 and 2019 were identified and subsequently screened for eligibility using title or abstract and full text assessment, resulting in 191 publications to be used in the study. Postmortem diagnostics (73.8%) and the flotation technique (28.8%) were commonly used to detect helminth infections with a pooled prevalence of 79.4% ranging from 4 to 100%. More than 30 helminth species in chicken populations were identified including Ascaridia galli (35.9%), Heterakis gallinarum (28.5%), Capillaria spp. (5.90%), and Raillietina spp. (19.0%) being the most prevalent. The reported prevalence of helminth infection decreased over time in developing countries while it increased in the developed world. Chicken kept in backyard and free-range systems had a markedly higher pooled prevalence of helminth infection (82.6 and 84.8%, respectively) than those housed in cage production systems (63.6%). This may indicate the need for more rigorous control and prevention measures in free-range and backyard production systems using regular deworming coupled with access to early and accurate diagnosis allowing for early intervention.http://www.sciencedirect.com/science/article/pii/S0032579121001164cestodechickenepidemiologynematodeparasite |
| spellingShingle | Anwar Shifaw Teka Feyera Stephen W. Walkden-Brown Brendan Sharpe Timothy Elliott Isabelle Ruhnke Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysis Poultry Science cestode chicken epidemiology nematode parasite |
| title | Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysis |
| title_full | Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysis |
| title_fullStr | Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysis |
| title_full_unstemmed | Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysis |
| title_short | Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysis |
| title_sort | global and regional prevalence of helminth infection in chickens over time a systematic review and meta analysis |
| topic | cestode chicken epidemiology nematode parasite |
| url | http://www.sciencedirect.com/science/article/pii/S0032579121001164 |
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