Animal welfare in broiler chickens

The objective of this study was to assess broiler chickens welfare using transect and individualassessment methodologies, evaluating the robustness of the latter as an effective tool for welfare evaluationon poultry farms. Eight closed, tunnel-ventilated houses were studied, four fitted with blackou...

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Autores principales: Menichelli, M., Gallard, E., Taié, A., Revidatti, F., Sindik, M., Spontón, S., Ojeda, A., Fernández, R.
Formato: Artículo revista
Lenguaje:Español
Publicado: Universidad Nacional del Nordeste 2025
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Acceso en línea:https://revistas.unne.edu.ar/index.php/vet/article/view/8511
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id I48-R154-article-8511
record_format ojs
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Poultry
hierarchical clustering
intensive production
Avicultura
agrupamiento jerárquico
producción intensiva
spellingShingle Poultry
hierarchical clustering
intensive production
Avicultura
agrupamiento jerárquico
producción intensiva
Menichelli, M.
Gallard, E.
Taié, A.
Revidatti, F.
Sindik, M.
Spontón, S.
Ojeda, A.
Fernández, R.
Animal welfare in broiler chickens
topic_facet Poultry
hierarchical clustering
intensive production
Avicultura
agrupamiento jerárquico
producción intensiva
author Menichelli, M.
Gallard, E.
Taié, A.
Revidatti, F.
Sindik, M.
Spontón, S.
Ojeda, A.
Fernández, R.
author_facet Menichelli, M.
Gallard, E.
Taié, A.
Revidatti, F.
Sindik, M.
Spontón, S.
Ojeda, A.
Fernández, R.
author_sort Menichelli, M.
title Animal welfare in broiler chickens
title_short Animal welfare in broiler chickens
title_full Animal welfare in broiler chickens
title_fullStr Animal welfare in broiler chickens
title_full_unstemmed Animal welfare in broiler chickens
title_sort animal welfare in broiler chickens
description The objective of this study was to assess broiler chickens welfare using transect and individualassessment methodologies, evaluating the robustness of the latter as an effective tool for welfare evaluationon poultry farms. Eight closed, tunnel-ventilated houses were studied, four fitted with blackout curtains andfour with translucent curtains. Along each transect, the number of immobile, lame, dirty, sick, dying, or deadchickens was recorded. In the individual assessment, variables such as body weight, presence of footpadlesions, tarsal burns, feather cleanliness, and gait were measured at each sampling point. Hierarchicalclustering analyses were performed using three aggregation methods: Complete, Average, and Ward.D,allowing grouping of farms based on similarity in these variables. Farm-level analysis produced stableclusters regardless of methodology. Dendrograms from the transect methodology were consistent acrossall three clustering methods, while individual assessment also yielded stable clustering independent of theclustering approach used. The findings suggest that both methodologies generate consistent and robustpatterns in the data, supporting their validity and applicability. Although minor differences between methodswere observed, their results were sufficiently congruent to recommend their combined use in future studies,expanding analytical capabilities in diverse poultry welfare assessments.
publisher Universidad Nacional del Nordeste
publishDate 2025
url https://revistas.unne.edu.ar/index.php/vet/article/view/8511
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first_indexed 2025-08-17T05:02:06Z
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spelling I48-R154-article-85112025-08-05T13:53:49Z Animal welfare in broiler chickens Evaluación de bienestar animal en pollos de engorde mediante las metodologías individual y de transectas Menichelli, M. Gallard, E. Taié, A. Revidatti, F. Sindik, M. Spontón, S. Ojeda, A. Fernández, R. Poultry hierarchical clustering intensive production Avicultura agrupamiento jerárquico producción intensiva The objective of this study was to assess broiler chickens welfare using transect and individualassessment methodologies, evaluating the robustness of the latter as an effective tool for welfare evaluationon poultry farms. Eight closed, tunnel-ventilated houses were studied, four fitted with blackout curtains andfour with translucent curtains. Along each transect, the number of immobile, lame, dirty, sick, dying, or deadchickens was recorded. In the individual assessment, variables such as body weight, presence of footpadlesions, tarsal burns, feather cleanliness, and gait were measured at each sampling point. Hierarchicalclustering analyses were performed using three aggregation methods: Complete, Average, and Ward.D,allowing grouping of farms based on similarity in these variables. Farm-level analysis produced stableclusters regardless of methodology. Dendrograms from the transect methodology were consistent acrossall three clustering methods, while individual assessment also yielded stable clustering independent of theclustering approach used. The findings suggest that both methodologies generate consistent and robustpatterns in the data, supporting their validity and applicability. Although minor differences between methodswere observed, their results were sufficiently congruent to recommend their combined use in future studies,expanding analytical capabilities in diverse poultry welfare assessments. El objetivo del presente estudio fue evaluar el bienestar de los pollos parrilleros mediante metodologías Individuales y de Transectas, determinando la robustez de esta última como una herramienta eficaz para el abordaje de esta problemática en granjas de producción avícola. Se utilizaron en total, ocho galpones cerrados de ventilación forzada tipo túnel, cuatro oscurecidos con cortinas tipo blackout y cuatro con cortinas translúcidas. En cada transecta se registró el número de pollos: inmóviles, cojeando, sucios, enfermos, agonizantes y muertos. En la metodología individual, se relevaron en cada uno de cinco puntos muestrales las variables peso corporal, presencia de lesiones de almohadilla plantar, quemadura de tarso, suciedad de plumas y marcha. Se emplearon métodos de agrupamiento jerárquico para analizar el conjunto de datos, bajo tres métodos de agregación, Complete, Average y Ward.D. Esto permitió asociar las granjas en función de características similares, lo que se evidenció por la menor distancia entre los valores de las variables. En el análisis a nivel de granja se obtuvieron agrupamientos estables, independientemente de la metodología utilizada, lo que se reflejó en los dendrogramas resultantes, los cuales fueron similares para los tres métodos de agrupamiento utilizados en ambas metodologías. Los resultados obtenidos en este estudio sugieren que ambas metodologías de evaluación de bienestar animal realizan un agrupamiento similar de las granjas. Los métodos de análisis demostraron ser robustos al generar patrones similares en los datos analizados. Esto refuerza la validez de ambos enfoques y su aplicabilidad en el contexto del análisis realizado, y evidencia que, si bien las metodologías pueden tener pequeñas variaciones, sus resultados son lo suficientemente consistentes como para recomendar su uso conjunto en investigaciones futuras, ampliando así las posibilidades de análisis en contextos variados. Universidad Nacional del Nordeste 2025-08-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/8511 10.30972/vet.3628511 Revista Veterinaria; Vol. 36 Núm. 2 (2025); 1-7 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/8511/8061 https://creativecommons.org/licenses/by-nc/4.0