Bioelectrical impedance analysis (BIA) in animal production: Review
2021
Schumacher,Larissa Luísa | Viégas,Julio | Cardoso,Gilmar dos Santos | Moro,Anderson Bertoluzzi | Tonin,Tiago João | Pereira,Stela Naetzold | Rocha,Leonardo Tombesi da | Caeneghen,Ana Luiza Van | Teixeira,Janaína Vargas
Abstract Bioelectrical impedance analysis (BIA) is a method based on the different levels of opposition to the flow of an ionic current through the different body tissues. Results are expressed by primary measures of resistance (Rs) and reactance (Xs). From such measures, equations are applied to determine the phase angle (PA) and impedance (Z). Bioimpedance analysis has been indicated as a reliable and precise method to determine the body composition and nutritional status in humans. BIA has recently been adapted to be applied on animal production. Therefore, the aim of this review is to provide an analysis on the potential use of bioelectrical impedance on zootechnical production. Through BIA, correlations among bioelectrical measures and tissue composition of swine, bovine, ovine, bubaline and fish carcasses can be established. In this regard, a growing number of demands were led by more precise and cost-effective methods to evaluate the body composition in the zootechnical sector, in which the analysis of bioelectrical impedance proved to be a promising and minimally invasive technology to replace traditional methods.
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