Main altered characteristics in the meat of young cattle of different sexual conditions supplemented in tropical pasture.

Autor:	Teixeira OS; Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil., Machado DS; Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, Campus Alegrete, RS-377, Km 27, Passo Novo, 97555-000 Alegrete, RS, Brazil., Pereira LB; Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil., Reis NP; Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil., Domingues CC; Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil., Klein JL; Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil., Cattelam J; Programa de Pós-Graduação em Saúde, Bem-Estar e Produção Animal Sustentável na Fronteira Sul, Universidade Federal da Fronteira do Sul, Campus de Realeza, Avenida Edmundo Gaievski, 1000, Rodovia BR-182, Km 466, 85770-000 Realeza, PR, Brazil., Nörnberg JL; Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil., Alves Filho DC; Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil., Brondani IL; Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil.
Jazyk:	angličtina
Zdroj:	Anais da Academia Brasileira de Ciencias [An Acad Bras Cienc] 2022 Aug 01; Vol. 94 (3), pp. e20210302. Date of Electronic Publication: 2022 Aug 01 (Print Publication: 2022).
DOI:	10.1590/0001-3765202220210302
Abstrakt:	The aim was to identify the predominant variables in the differentiation of meat quality of cattle submitted to surgical castration, immunocastration, or non-castration and finished in a tropical pasture. Thirty-nine crossbred cattle were used and distributed in three treatments: i) surgical castration; ii) immunocastration; and iii) non-castration, with an initial mean age of 14.06±0.72 months and a mean weight of 284.10±31.40 kg. We used the principal component analysis to differentiate the qualitative meat characteristics between the treatments. Based on that analysis, we found that the first three principal components explained 71.44% of the total variation in the meat quality data, which ensures that the variation found is associated with the effect of the treatments. The characteristics correlated with the first three principal components and responsible for the discrimination between sexual conditions were subcutaneous fat thickness, instrumental meat color, cooking loss and shear force. These characteristics were similar among castrated animals, regardless of the methods. Therefore, immunological castration preserves the attributes of the meat and prevents possible damage to the physical and mental integrity of the animals. Finally, principal component analysis is an important methodology in the objective investigation of beef meat attributes.
Databáze:	MEDLINE
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