Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens

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dc.creatorAS Mendes
dc.creatorSJ Paixão
dc.creatorRR Sikorski
dc.creatorDV Bonamigo
dc.creatorMG Morello
dc.creatorRAR Ponzoni
dc.date2016
dc.date.accessioned2026-07-07T03:24:05Z
dc.descriptionLocomotion problems in broiler chickens can cause economic losses of up to 40% of the total revenues due to carcass condemnation and downgrading at processing. Leg disorders, such as femoral lesions, tibial dyschondroplasia, and spondylolisthesis, substantially impact the welfare of chickens as these disorders can prevent birds from reaching the feeders and drinkers, thus reducing feed and water intake. The most important issues related to broiler welfare reported in the last two decades are their growing sensitivity to metabolic and locomotion problems due to the fast growth rates and inactivity. Traditional methods for the determination of gait score include the manual scoring of animal behavior in the broiler house. Recorded video images can also be used for manual scoring of chicken gait score. However, scoring of some animal-based information by human experts and manual methods remain difficult, time consuming and expensive when implemented at farm level. In an effort to objectively detect leg disorders, this study aimed at validating the photogrammetry technique as a non-invasive method for identifying locomotion problems in broilers. Photogrammetry allows determining the geometric properties of broilers from digital photos that are processed and analyzed using a computer software. Results obtained using photogrammetry were tested for their correlation with those obtained by accepted methodologies, including gait score and macroscopic examination of femoral degeneration and tibial dyschondroplasia. The photogrammetry results agreed with the results of the afore mentioned accepted methods.
dc.formatapplication/pdf
dc.identifier1516-635X
dc.identifierhttps://www.redalyc.org/articulo.oa?id=179759360003
dc.identifier.urihttp://hdl.handle.net/123456789/432828
dc.languageen
dc.publisherFundação APINCO de Ciência e Tecnologia Avícolas
dc.relationhttp://www.redalyc.org/revista.oa?id=1797
dc.rightsRevista Brasileira de Ciência Avícola
dc.sourceRevista Brasileira de Ciência Avícola (Brasil) Num.4 Vol.18
dc.subjectAgrociencias
dc.titlePhotogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens
dc.typeartículo científico

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