Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.

The present study aimed to assess the influence of adding straw bales, step platforms, and laser projectors as environmental enrichment resources on the behaviour and welfare indicators of broiler chickens (Gallus gallus domesticus). A sample of 4,000 day-old male Cobb® 500 birds was used. The exper...

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Autores principales:	Marconi Italo Lourenço da Silva, Ibiara Correia de Lima Almeida Paz, Gustavo Henrique Coelho Chaves, Ianê Correia de Lima Almeida, Caio Cesar Dos Ouros, Silvia Regina Lucas de Souza, Elisane Lenita Milbradt, Fabiana Ribeiro Caldara, Ana Júlia Garcia Satin, Gabriel Augusto da Costa, Andreia Soares Gonçalves Glavina
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/085aedbf941b4946b6334b64a15b681c
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spelling	oai:doaj.org-article:085aedbf941b4946b6334b64a15b681c2021-12-02T20:14:09ZBehaviour and animal welfare indicators of broiler chickens housed in an enriched environment.1932-620310.1371/journal.pone.0256963https://doaj.org/article/085aedbf941b4946b6334b64a15b681c2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256963https://doaj.org/toc/1932-6203The present study aimed to assess the influence of adding straw bales, step platforms, and laser projectors as environmental enrichment resources on the behaviour and welfare indicators of broiler chickens (Gallus gallus domesticus). A sample of 4,000 day-old male Cobb® 500 birds was used. The experimental treatments consisted of No Environmental Enrichment (NEE)-similar to a conventional environment; and Environmental Enrichment (EE)-environment enriched with straw bales, step platforms, and laser projectors, with four replicates per treatment of 500 animals. Behavioural characteristics (ethological observation through cameras, grab test, and modified touch test) and animal welfare indicators (pododermatitis and dorsal cranial myopathy) were assessed. The birds submitted to the EE treatment exhibited greater exploratory activity and expression of behaviours associated with comfort and welfare, whereas those in the NEE group were less active. Locomotion and play fighting behaviour decreased and behaviours associated with comfort increased as age advanced. The frequencies of interaction with laser spots and birds lying around straw bales were the highest in the 1st week (P<0.01). The behaviours of pecking at straw bales (P<0.0004), using the step platforms (P = 0.0001) and being on top of straw bales (P<0.0002) gradually increased. The chickens accessed the feeding troughs the most in the period of 0800 hours (P<0.0001) and expressed the highest frequencies of behaviours associated with comfort in the 1400 hours and 1700 hours periods. The birds in the EE group were calmer in face of human presence and touch and scored higher in animal welfare indicators. Adding straw bales, step platforms, and laser projectors increased locomotion, reduced expression of fear, and improved animal welfare indicators of broiler chickens.Marconi Italo Lourenço da SilvaIbiara Correia de Lima Almeida PazGustavo Henrique Coelho ChavesIanê Correia de Lima AlmeidaCaio Cesar Dos OurosSilvia Regina Lucas de SouzaElisane Lenita MilbradtFabiana Ribeiro CaldaraAna Júlia Garcia SatinGabriel Augusto da CostaAndreia Soares Gonçalves GlavinaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0256963 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marconi Italo Lourenço da Silva Ibiara Correia de Lima Almeida Paz Gustavo Henrique Coelho Chaves Ianê Correia de Lima Almeida Caio Cesar Dos Ouros Silvia Regina Lucas de Souza Elisane Lenita Milbradt Fabiana Ribeiro Caldara Ana Júlia Garcia Satin Gabriel Augusto da Costa Andreia Soares Gonçalves Glavina Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.
description	The present study aimed to assess the influence of adding straw bales, step platforms, and laser projectors as environmental enrichment resources on the behaviour and welfare indicators of broiler chickens (Gallus gallus domesticus). A sample of 4,000 day-old male Cobb® 500 birds was used. The experimental treatments consisted of No Environmental Enrichment (NEE)-similar to a conventional environment; and Environmental Enrichment (EE)-environment enriched with straw bales, step platforms, and laser projectors, with four replicates per treatment of 500 animals. Behavioural characteristics (ethological observation through cameras, grab test, and modified touch test) and animal welfare indicators (pododermatitis and dorsal cranial myopathy) were assessed. The birds submitted to the EE treatment exhibited greater exploratory activity and expression of behaviours associated with comfort and welfare, whereas those in the NEE group were less active. Locomotion and play fighting behaviour decreased and behaviours associated with comfort increased as age advanced. The frequencies of interaction with laser spots and birds lying around straw bales were the highest in the 1st week (P<0.01). The behaviours of pecking at straw bales (P<0.0004), using the step platforms (P = 0.0001) and being on top of straw bales (P<0.0002) gradually increased. The chickens accessed the feeding troughs the most in the period of 0800 hours (P<0.0001) and expressed the highest frequencies of behaviours associated with comfort in the 1400 hours and 1700 hours periods. The birds in the EE group were calmer in face of human presence and touch and scored higher in animal welfare indicators. Adding straw bales, step platforms, and laser projectors increased locomotion, reduced expression of fear, and improved animal welfare indicators of broiler chickens.
format	article
author	Marconi Italo Lourenço da Silva Ibiara Correia de Lima Almeida Paz Gustavo Henrique Coelho Chaves Ianê Correia de Lima Almeida Caio Cesar Dos Ouros Silvia Regina Lucas de Souza Elisane Lenita Milbradt Fabiana Ribeiro Caldara Ana Júlia Garcia Satin Gabriel Augusto da Costa Andreia Soares Gonçalves Glavina
author_facet	Marconi Italo Lourenço da Silva Ibiara Correia de Lima Almeida Paz Gustavo Henrique Coelho Chaves Ianê Correia de Lima Almeida Caio Cesar Dos Ouros Silvia Regina Lucas de Souza Elisane Lenita Milbradt Fabiana Ribeiro Caldara Ana Júlia Garcia Satin Gabriel Augusto da Costa Andreia Soares Gonçalves Glavina
author_sort	Marconi Italo Lourenço da Silva
title	Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.
title_short	Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.
title_full	Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.
title_fullStr	Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.
title_full_unstemmed	Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.
title_sort	behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/085aedbf941b4946b6334b64a15b681c
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Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment.

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