In pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens

ABSTRACT: Selection for rapid growth has produced heavier, more efficient broiler chickens, but has also introduced health and welfare issues, which may cause or be caused by inactivity. Rapid growth may also limit the performance of motivated behaviors, whereas the provision of enrichment may incre...

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Autores principales:	Lauren C. Dawson, Tina M. Widowski, Zhenzhen Liu, A. Michelle Edwards, Stephanie Torrey
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	broiler welfare inactivity behavior slow-growing Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/086ca6c0fb634be0b0b9c8e97a7e4c24
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spelling	oai:doaj.org-article:086ca6c0fb634be0b0b9c8e97a7e4c242021-11-24T04:21:45ZIn pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens0032-579110.1016/j.psj.2021.101451https://doaj.org/article/086ca6c0fb634be0b0b9c8e97a7e4c242021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0032579121004740https://doaj.org/toc/0032-5791ABSTRACT: Selection for rapid growth has produced heavier, more efficient broiler chickens, but has also introduced health and welfare issues, which may cause or be caused by inactivity. Rapid growth may also limit the performance of motivated behaviors, whereas the provision of enrichment may increase these behaviors and general activity. This study aimed to evaluate the inactivity, behavior patterns, and enrichment use of 2 fast- (CONV) and 12 slower growing broiler strains (categorized as fastest [FAST], moderate [MOD], and slowest slow [SLOW]), based on their growth rates; 4 strains/category]. To evaluate inactivity, one male and one female from 153 pens were outfitted with omni-directional accelerometers from d 21 until processing (14–24 birds/strain from 8 to 12 pens/strain). Additionally, to supplement inactivity data, 5-min continuous behavioral observations of four focal birds per pen (2 males, 2 females) were conducted on days 26, 42, and 56 (72–148 observations of 8–12 pens/strain) to quantify the duration and frequency of various behaviors; at the same time, 5 to 11 instantaneous scan samples were also performed for pen-based enrichment use. Inactivity peaked at 78 to 80% of the day for all strains; however, those with slower growth rates reached these levels at older ages. Compared to slower growing strains at the same age, faster growing strains were more inactive, spent more time sitting and feeding, spent less time standing and walking, and used enrichments less; these differences mostly occurred at younger ages. Generally, at the same age, strains with similar growth rates (within the same category) behaved similarly, with only a few exceptions. Results suggest that not all strains identified as “slow-growing” broilers behave differently from fast-growing broilers, nor do they all behave similarly to each other. As such, results suggest that improved broiler welfare, particularly with respect to reduced inactivity, the performance of a wider range of normal, motivated behaviors, and/or increased enrichment use, is related to the broiler strain's specific growth rate.Lauren C. DawsonTina M. WidowskiZhenzhen LiuA. Michelle EdwardsStephanie TorreyElsevierarticlebroilerwelfareinactivitybehaviorslow-growingAnimal cultureSF1-1100ENPoultry Science, Vol 100, Iss 12, Pp 101451- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	broiler welfare inactivity behavior slow-growing Animal culture SF1-1100
spellingShingle	broiler welfare inactivity behavior slow-growing Animal culture SF1-1100 Lauren C. Dawson Tina M. Widowski Zhenzhen Liu A. Michelle Edwards Stephanie Torrey In pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens
description	ABSTRACT: Selection for rapid growth has produced heavier, more efficient broiler chickens, but has also introduced health and welfare issues, which may cause or be caused by inactivity. Rapid growth may also limit the performance of motivated behaviors, whereas the provision of enrichment may increase these behaviors and general activity. This study aimed to evaluate the inactivity, behavior patterns, and enrichment use of 2 fast- (CONV) and 12 slower growing broiler strains (categorized as fastest [FAST], moderate [MOD], and slowest slow [SLOW]), based on their growth rates; 4 strains/category]. To evaluate inactivity, one male and one female from 153 pens were outfitted with omni-directional accelerometers from d 21 until processing (14–24 birds/strain from 8 to 12 pens/strain). Additionally, to supplement inactivity data, 5-min continuous behavioral observations of four focal birds per pen (2 males, 2 females) were conducted on days 26, 42, and 56 (72–148 observations of 8–12 pens/strain) to quantify the duration and frequency of various behaviors; at the same time, 5 to 11 instantaneous scan samples were also performed for pen-based enrichment use. Inactivity peaked at 78 to 80% of the day for all strains; however, those with slower growth rates reached these levels at older ages. Compared to slower growing strains at the same age, faster growing strains were more inactive, spent more time sitting and feeding, spent less time standing and walking, and used enrichments less; these differences mostly occurred at younger ages. Generally, at the same age, strains with similar growth rates (within the same category) behaved similarly, with only a few exceptions. Results suggest that not all strains identified as “slow-growing” broilers behave differently from fast-growing broilers, nor do they all behave similarly to each other. As such, results suggest that improved broiler welfare, particularly with respect to reduced inactivity, the performance of a wider range of normal, motivated behaviors, and/or increased enrichment use, is related to the broiler strain's specific growth rate.
format	article
author	Lauren C. Dawson Tina M. Widowski Zhenzhen Liu A. Michelle Edwards Stephanie Torrey
author_facet	Lauren C. Dawson Tina M. Widowski Zhenzhen Liu A. Michelle Edwards Stephanie Torrey
author_sort	Lauren C. Dawson
title	In pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens
title_short	In pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens
title_full	In pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens
title_fullStr	In pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens
title_full_unstemmed	In pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens
title_sort	in pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/086ca6c0fb634be0b0b9c8e97a7e4c24
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In pursuit of a better broiler: a comparison of the inactivity, behavior, and enrichment use of fast- and slower growing broiler chickens

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