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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Does environmental enrichment improve performance, morphometry, yield and weight of broiler parts at different ages?

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Author(s):
Aérica C. Nazareno [1] ; Iran J. O. da Silva [2] ; Eduardo F. Delgado [3] ; Miguel Machado [4] ; Luiz O. Pradella [5]
Total Authors: 5
Affiliation:
[1] Universidade de São Paulo. Escola Superior de Agricultura “Luiz de Queiroz”. Departamento de Engenharia de Biossistemas - Brasil
[2] Universidade de São Paulo. Escola Superior de Agricultura “Luiz de Queiroz”. Departamento de Engenharia de Biossistemas - Brasil
[3] Universidade de São Paulo. Escola Superior de Agricultura “Luiz de Queiroz”. Departamento de Zootecnia - Brasil
[4] Universidade de São Paulo. Escola Superior de Agricultura “Luiz de Queiroz”. Departamento de Engenharia de Biossistemas - Brasil
[5] Universidade de São Paulo. Escola Superior de Agricultura “Luiz de Queiroz”. Departamento de Engenharia de Biossistemas - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Revista Brasileira de Engenharia Agrícola e Ambiental; v. 26, n. 4, p. 292-298, 2022-01-14.
Abstract

ABSTRACT The inclusion of environmental enrichment in conventional broiler rearing can increase mobility, bone mass and muscle. This research aimed to evaluate the use of environmental enrichment in the rearing of broilers at different ages and its influence on performance, morphometry, yield and weight of the parts. It was used the completely randomized design in split-plot scheme, being the plots the treatments presence (T1) and absence (T2) of environmental enrichment and the subplots the broiler ages (1, 7, 14, 21, 28, 35 and 42 days), with 56 chicks in each treatment (T1 and T2). Data obtained were analyzed by the linear effect model of fixed effects and compared by Tukey’s test of means. The animals were raised in a controlled environment, divided into four boxes with dimensions: 1.5 × 1.0 × 0.7 m, containing rice straw bed. In T1 a ladder with a perch on top was used, distributed every 1.5 m2. Environmental enrichment used did not influence broiler’s zootechnical performance. Broilers’ morphometric properties, parts weight and body weight increased due to environmental enrichment and, improvement was observed in chicks rearing’s final phase. The environmental enrichment was beneficial for muscle and bone mass gain in the main commercial parts of the chicken carcass, in addition to reducing the allometric coefficient of the breasts in chickens. (AU)

FAPESP's process: 16/10769-8 - Bone biomechanics and animal welfare: evaluation of locomotor system according to environmental enrichment in different ages of broilers
Grantee:Aérica Cirqueira Nazareno
Support Opportunities: Scholarships in Brazil - Post-Doctoral