Avaliação de procedimentos rotineiros na suinocultura como métodos estimativos de estresse mediante a aplicação da vocalização e velocidade de manejo

Gisele Dela Ricci; Cristiane Gonçalves Titto; Késia Oliveira da Silva Miranda; Patricia Nardin Berto; Evaldo Lencioni Titto; Vera Letticie de Azevedo Ruiz

doi:10.18004/investig.agrar.2019.diciembre.117-123

Authors

Gisele Dela Ricci Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Programa de Pós-Graduação em Zootecnia, Laboratório de Biometeorologia e Etologia, . Pirassununga, SP, Brasil.
Cristiane Gonçalves Titto Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Laboratório de Biometeorologia e Etologia. Pirassununga, SP, Brasil.
Késia Oliveira da Silva Miranda Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz”, Departamento de Engenharia de Biossistemas. Piracicaba, SP, Brasil.
Patricia Nardin Berto Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Programa de Pós Graduação em Nutrição e Produção Animal. Pirassununga, SP, Brasil.
Evaldo Lencioni Titto Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Laboratório de Biometeorologia e Etologia. Pirassununga, SP, Brasil.
Vera Letticie de Azevedo Ruiz Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária. Pirassununga, SP, Brasil.

DOI:

https://doi.org/10.18004/investig.agrar.2019.diciembre.117-123%20

Abstract

Vocalization and behavior are non-invasive methods of animal welfare analysis. The objective of this study was to evaluate the welfare of piglets during Australian ear notching, tooth wear and castration, from vocalizations and behavioral aspects of pigs. For this, 281 piglets were used, with measurements of the maximum and minimum intensity of the noise emitted by the piglets and the time of accomplishment. The behavior of the piglets was obtained according to the activity performed during handling and containment. For behavioral analysis a specific etogram was used. The comparison of means was performed by T-test and PDIFF. The castration was the practice with the highest average of time of accomplishment, followed by the wear of teeth and ear notching. The highest mean values of minimum and maximum intensity were found for male castration in the slow process. It was observed that sex did not influence the time when the ear notching and tooth wear were performed, but at the same time the avoidance behavior was the most observed (P <0.05), with low frequency in castration. Therefore, it can be concluded that the procedures caused pain, characterized by vocal demonstrations and negative behavior.

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