Energy Assessment from Broiler Chicks’ Vocalization Might Help Improve Welfare and Production

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dc.contributor.authorPereira, Erica
dc.contributor.authorNääs, Irenilza de Alencar
dc.contributor.authorIvale, André Henrique
dc.contributor.authorGarcia, Rodrigo Garófallo
dc.contributor.authorLima, Nilsa Duarte da Silva
dc.contributor.authorPereira, Danilo Florentino [UNESP]
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Paulista
dc.contributor.institutionThe Federal University of Grande Dourados
dc.contributor.institutionFederal University of Roraima
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T16:02:34Z
dc.date.available2023-07-29T16:02:34Z
dc.date.issued2023-01-01
dc.description.abstractVocalization seems to be a viable source of signal for assessing broiler welfare. However, it may require an understanding of the birds’ signals, both quantitatively and qualitatively. The delivery of calls with a specific set of acoustic features must be understood to assess the broiler’s well-being. The present study aimed to analyze broiler chick vocalization through the sounds emitted during social isolation and understand what would be the flock size where the chicks present the smallest energy loss in vocalizing. The experiments were carried out during the first 3 days of growth, and during the trial, chicks received feed and water ad libitum. A total of 30 1-day-old chicks Cobb® breed were acquired at a commercial hatching unit. The birds were tested from 1 to 3 days old. A semi-anechoic chamber was used to record the vocalization with a unidirectional microphone connected to a digital recorder. We placed a group of 15 randomly chosen chicks inside the chamber and recorded the peeping sound, and the assessment was conducted four times with randomly chosen birds. We recorded the vocalization for 2 min and removed the birds sequentially stepwise until only one bird was left inside the semi-anechoic chamber. Each audio signal recorded during the 40 s was chosen randomly for signal extraction and analysis. Fast Fourier transform (FFT) was used to extract the acoustic features and the energy emitted during the vocalization. Using data mining, we compared three classification models to predict the rearing condition (classes distress and normal). The results show that birds’ vocalization differed when isolated and in a group. Results also indicate that the energy spent in vocalizing varies depending on the size of the flock. When isolated, the chicks emit a high-intensity sound, “alarm call”, which uses high energy. In contrast, they spent less energy when flocked in a group, indicating good well-being when the flock was 15 chicks. The weight of birds influenced the amount of signal energy. We also found that the most effective classifier model was the Random Forest, with an accuracy of 85.71%, kappa of 0.73, and cross-entropy of 0.2.en
dc.description.affiliationCollege of Agricultural Engineering State University of Campinas, SP
dc.description.affiliationGraduate Program in Production Engineering Universidade Paulista, SP
dc.description.affiliationCollege of Agrarian Sciences The Federal University of Grande Dourados, MS
dc.description.affiliationDepartment of Animal Science Federal University of Roraima, RR
dc.description.affiliationDepartment of Management Development and Technology School of Sciences and Engineering São Paulo State University, SP
dc.description.affiliationUnespDepartment of Management Development and Technology School of Sciences and Engineering São Paulo State University, SP
dc.identifierhttp://dx.doi.org/10.3390/ani13010015
dc.identifier.citationAnimals, v. 13, n. 1, 2023.
dc.identifier.doi10.3390/ani13010015
dc.identifier.issn2076-2615
dc.identifier.scopus2-s2.0-85145831336
dc.identifier.urihttp://hdl.handle.net/11449/249539
dc.language.isoeng
dc.relation.ispartofAnimals
dc.sourceScopus
dc.subjectacoustic communication
dc.subjectanimal welfare
dc.subjectsignal analysis
dc.titleEnergy Assessment from Broiler Chicks’ Vocalization Might Help Improve Welfare and Productionen
dc.typeArtigo
unesp.author.orcid0000-0003-0663-9377[2]
unesp.author.orcid0000-0002-1284-7810[5]
unesp.author.orcid0000-0003-4602-8837[6]
unesp.departmentAdministração - Tupãpt

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