Working for food is related to range use in free-range broiler chickens

Abstract When animals prefer to make efforts to obtain food instead of acquiring it from freely available sources, they exhibit what is called contrafreeloading. Recently, individual differences in behavior, such as exploration, were shown to be linked to how prone an individual may be to contrafree...

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Autores principales:	Vitor Hugo Bessa Ferreira, Arthur Simoni, Karine Germain, Christine Leterrier, Léa Lansade, Anne Collin, Sandrine Mignon-Grasteau, Elisabeth Le Bihan-Duval, Elodie Guettier, Hélène Leruste, Ludovic Calandreau, Vanessa Guesdon
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b41b3d6c803c417bb77ad6073b229042
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spelling	oai:doaj.org-article:b41b3d6c803c417bb77ad6073b2290422021-12-02T17:05:46ZWorking for food is related to range use in free-range broiler chickens10.1038/s41598-021-85867-22045-2322https://doaj.org/article/b41b3d6c803c417bb77ad6073b2290422021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85867-2https://doaj.org/toc/2045-2322Abstract When animals prefer to make efforts to obtain food instead of acquiring it from freely available sources, they exhibit what is called contrafreeloading. Recently, individual differences in behavior, such as exploration, were shown to be linked to how prone an individual may be to contrafreeload. In this work, our main objective was to test whether and how individual differences in range use of free-range broiler chickens (Gallus gallus domesticus) were related to the individual motivation to contrafreeload. We also verified whether other behavioral variations could relate to range use. To that aim, over three different periods (before range access, first weeks of range access, and last weeks of range access), chickens with different ranging levels (low and high rangers) were submitted to a contrafreeloading test and had different behaviors recorded (such as foraging, resting, locomotion) in their home environment. During the contrafreeloading test, chickens were conditioned to one chamber presenting a foraging substrate and mealworms, while in the other chamber, mealworms were freely available on the floor. During testing trials, chickens had access to both empty chambers, and the time spent in each chamber was quantified. On average, low rangers preferred the chamber where mealworms were easily accessible (without the foraging substrate), while high rangers preferred the chamber where mealworms were accessible with difficulty, showing greater contrafreeloading. Out of ten behaviors recorded in chickens' home environment, foraging was the only one that differed significantly between our two ranging groups, with low rangers foraging, on average, significantly less than high rangers. These results corroborate previous experiences suggesting that range use is probably linked to chickens' exploratory trait and suggest that individual differences in free-range broiler chickens are present even before range access. Increasing our knowledge of individual particularities is a necessary step to improve free-range chicken welfare on the farm.Vitor Hugo Bessa FerreiraArthur SimoniKarine GermainChristine LeterrierLéa LansadeAnne CollinSandrine Mignon-GrasteauElisabeth Le Bihan-DuvalElodie GuettierHélène LerusteLudovic CalandreauVanessa GuesdonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Vitor Hugo Bessa Ferreira Arthur Simoni Karine Germain Christine Leterrier Léa Lansade Anne Collin Sandrine Mignon-Grasteau Elisabeth Le Bihan-Duval Elodie Guettier Hélène Leruste Ludovic Calandreau Vanessa Guesdon Working for food is related to range use in free-range broiler chickens
description	Abstract When animals prefer to make efforts to obtain food instead of acquiring it from freely available sources, they exhibit what is called contrafreeloading. Recently, individual differences in behavior, such as exploration, were shown to be linked to how prone an individual may be to contrafreeload. In this work, our main objective was to test whether and how individual differences in range use of free-range broiler chickens (Gallus gallus domesticus) were related to the individual motivation to contrafreeload. We also verified whether other behavioral variations could relate to range use. To that aim, over three different periods (before range access, first weeks of range access, and last weeks of range access), chickens with different ranging levels (low and high rangers) were submitted to a contrafreeloading test and had different behaviors recorded (such as foraging, resting, locomotion) in their home environment. During the contrafreeloading test, chickens were conditioned to one chamber presenting a foraging substrate and mealworms, while in the other chamber, mealworms were freely available on the floor. During testing trials, chickens had access to both empty chambers, and the time spent in each chamber was quantified. On average, low rangers preferred the chamber where mealworms were easily accessible (without the foraging substrate), while high rangers preferred the chamber where mealworms were accessible with difficulty, showing greater contrafreeloading. Out of ten behaviors recorded in chickens' home environment, foraging was the only one that differed significantly between our two ranging groups, with low rangers foraging, on average, significantly less than high rangers. These results corroborate previous experiences suggesting that range use is probably linked to chickens' exploratory trait and suggest that individual differences in free-range broiler chickens are present even before range access. Increasing our knowledge of individual particularities is a necessary step to improve free-range chicken welfare on the farm.
format	article
author	Vitor Hugo Bessa Ferreira Arthur Simoni Karine Germain Christine Leterrier Léa Lansade Anne Collin Sandrine Mignon-Grasteau Elisabeth Le Bihan-Duval Elodie Guettier Hélène Leruste Ludovic Calandreau Vanessa Guesdon
author_facet	Vitor Hugo Bessa Ferreira Arthur Simoni Karine Germain Christine Leterrier Léa Lansade Anne Collin Sandrine Mignon-Grasteau Elisabeth Le Bihan-Duval Elodie Guettier Hélène Leruste Ludovic Calandreau Vanessa Guesdon
author_sort	Vitor Hugo Bessa Ferreira
title	Working for food is related to range use in free-range broiler chickens
title_short	Working for food is related to range use in free-range broiler chickens
title_full	Working for food is related to range use in free-range broiler chickens
title_fullStr	Working for food is related to range use in free-range broiler chickens
title_full_unstemmed	Working for food is related to range use in free-range broiler chickens
title_sort	working for food is related to range use in free-range broiler chickens
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b41b3d6c803c417bb77ad6073b229042
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Working for food is related to range use in free-range broiler chickens

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