Author(s): Perdigao, Alexandre [UNESP] ; Martins, Cyntia Ludovico [UNESP] ; Vieira Junior, Luiz Carlos [UNESP] ; Pereira Sartori, Maria Marcia [UNESP] ; Niehues, Maria Betania [UNESP] ; Arrigoni, Mario De Beni [UNESP]
Date: 2021
Persistent ID: http://hdl.handle.net/11449/209957
Origin: Oasisbr
Subject(s): muscle tissue; Nelore; production system; traceability
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
The objective of this work was to evaluate the potential of the stable isotope technique to characterize beef cattle production systems in tropical conditions. For this, carbon and nitrogen stable isotopes were identified in non-defatted and defatted bovine muscles. A total of 45 cattle were evaluated in three production systems: pasture, conventional feedlot, and young beef bull feedlot (n = 15 per system). Samples from the Trapezius cervicis, Longissimus dorsi, and Semitendinosus muscles were collected to determine the isotopic composition of delta C-13 and delta N-15. The isotopic data of the delta C-13 and delta N-15 of non-defatted and defatted muscles were subjected to the principal component analysis (PCA) and to the discriminant analysis (DA). The PCA allowed separating the three production systems based on the results obtained for the non-defatted and defatted muscles. A correct global classification rate of 100% and a cross-validation rate of 100% were obtained with the DA. The carbon and nitrogen isotopic ratio of non-defatted and defatted muscles allows for the precise identification of beef cattle production systems in tropical conditions.
Univ Estadual Paulista, Fac Med Vet & Zootecnia, Dept Melhoramento & Nutr Anim, Campus Botucatu, BR-18618681 Botucatu, SP, Brazil
Univ Estadual Paulista, Fac Med Vet & Zootecnia, Dept Prod Anim & Med, Campus Botucatu, BR-18618681 Botucatu, SP, Brazil
Univ Estadual Paulista, Fac Ciencias Agron, Dept Prod & Melhoramento Vegetal, Rua Jose Barbosa Barros 1-780,Caixa Postal 237, BR-18610307 Botucatu, SP, Brazil
Univ Estadual Paulista, Fac Med Vet & Zootecnia, Dept Melhoramento & Nutr Anim, Campus Botucatu, BR-18618681 Botucatu, SP, Brazil
Univ Estadual Paulista, Fac Med Vet & Zootecnia, Dept Prod Anim & Med, Campus Botucatu, BR-18618681 Botucatu, SP, Brazil
Univ Estadual Paulista, Fac Ciencias Agron, Dept Prod & Melhoramento Vegetal, Rua Jose Barbosa Barros 1-780,Caixa Postal 237, BR-18610307 Botucatu, SP, Brazil
