Modern livestock farming under tropical conditions using sensors in grazing systems

Autor: Eliéder Prates Romanzini, Rafael Nakamura Watanabe, Natália Vilas Boas Fonseca, Andressa Scholz Berça, Thaís Ribeiro Brito, Priscila Arrigucci Bernardes, Danísio Prado Munari, Ricardo Andrade Reis
Přispěvatelé: Universidade Estadual Paulista (UNESP), Universidade Federal de Santa Catarina (UFSC)
Rok vydání: 2021
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Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 2045-2322
Popis: Made available in DSpace on 2022-05-01T13:41:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-12-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The aim of this study was to evaluate a commercial sensor—a three-axis accelerometer—to predict animal behavior with a variety of conditions in tropical grazing systems. The sensor was positioned on the underjaw of young bulls to detect the animals’ movements. A total of 22 animals were monitored in a grazing system, during both seasons (wet and dry), with different quality and quantity forage allowance. The machine learning (ML) methods used were random forest (RF), convolutional neural net and linear discriminant analysis; the metrics used to determine the best method were accuracy, Kappa coefficient, and a confusion matrix. After predicting animal behavior using the best ML method, a forecast for animal performance was developed using a mechanistic model: multiple linear regression to correlate intermediate average daily gain (iADG) observed versus iADG predicted. The best ML method yielded accuracy of 0.821 and Kappa coefficient of 0.704, was RF. From the forecast for animal performance, the Pearson correlation was 0.795 and the mean square error was 0.062. Hence, the commercial Ovi-bovi sensor, which is a three-axis accelerometer, can act as a powerful tool for predicting animal behavior in beef cattle production developed under a variety tropical grazing condition. Department of Animal Science São Paulo State University (Unesp), Via de Acesso Prof. Paulo Donato Castellane s/n, SP Department of Engineering and Exact Sciences São Paulo State University (Unesp), SP Department of Animal Science and Rural Development Federal University of Santa Catarina (UFSC), SC Department of Animal Science São Paulo State University (Unesp), Via de Acesso Prof. Paulo Donato Castellane s/n, SP Department of Engineering and Exact Sciences São Paulo State University (Unesp), SP CNPq: 150985/2019-3 FAPESP: 2015/16631-5 FAPESP: 2018/20753-7
Databáze: OpenAIRE
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