Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens
ABSTRACT Locomotion 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 chicken...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Fundação APINCO de Ciência e Tecnologia Avícolas
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| Series: | Brazilian Journal of Poultry Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400573&lng=en&tlng=en |
| _version_ | 1811281237101248512 |
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| author | AS Mendes SJ Paixão RR Sikorski DV Bonamigo MG Morello RAR Ponzoni |
| author_facet | AS Mendes SJ Paixão RR Sikorski DV Bonamigo MG Morello RAR Ponzoni |
| author_sort | AS Mendes |
| collection | DOAJ |
| description | ABSTRACT Locomotion 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. |
| first_indexed | 2024-04-13T01:30:10Z |
| format | Article |
| id | doaj.art-aa09d2652b0948f4a61e0cb2d152cfee |
| institution | Directory Open Access Journal |
| issn | 1806-9061 |
| language | English |
| last_indexed | 2024-04-13T01:30:10Z |
| publisher | Fundação APINCO de Ciência e Tecnologia Avícolas |
| record_format | Article |
| series | Brazilian Journal of Poultry Science |
| spelling | doaj.art-aa09d2652b0948f4a61e0cb2d152cfee2022-12-22T03:08:33ZengFundação APINCO de Ciência e Tecnologia AvícolasBrazilian Journal of Poultry Science1806-906118457358010.1590/1806-9061-2015-0079S1516-635X2016000400573Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler ChickensAS MendesSJ PaixãoRR SikorskiDV BonamigoMG MorelloRAR PonzoniABSTRACT Locomotion 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400573&lng=en&tlng=enPoultry productionanimal welfarefemoral degenerationtibial dyschondroplasia |
| spellingShingle | AS Mendes SJ Paixão RR Sikorski DV Bonamigo MG Morello RAR Ponzoni Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens Brazilian Journal of Poultry Science Poultry production animal welfare femoral degeneration tibial dyschondroplasia |
| title | Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens |
| title_full | Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens |
| title_fullStr | Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens |
| title_full_unstemmed | Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens |
| title_short | Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens |
| title_sort | photogrammetry a non invasive and objective method for detecting locomotion problems in broiler chickens |
| topic | Poultry production animal welfare femoral degeneration tibial dyschondroplasia |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400573&lng=en&tlng=en |
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