Investigating potential causal relationships among carcass and meat quality traits using structural equation model in Nellore cattle

Made available in DSpace on 2022-04-29T08:40:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-05-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The objective of this study was to investigate potential causal relationships among hot carcass weight (HCW), longissimus muscle area (LMA), backfat thickness (BF), Warner-Bratzler shear force (WBSF), and marbling score (MB) traits in Nellore cattle using structural equation models (SEM). The SEM fitted comprises the following links between traits: WBSF → LMA, WBSF → HCW, HCW → LMA, BF → HCW, and BF → MB, where the arrows indicate the causal direction between traits, with structural coefficients posterior means (posterior standard deviation) equal to −0.29 cm2/kg (0.09), 0.43 kg/kg (0.29), 0.10 cm2/kg (0.006), 1.92 kg/mm (0.28), and 0.03 score-grade/mm (0.006), respectively. The final SEM revealed some important putative causal relationships among the traits studied here. The implied causal effects suggest that interventions on meat tenderness and fat content would affect overall growth and muscle deposition. Knowledge regarding potential causal relationships inferred among the traits studied here can have important implications for the genetic selection and management of Nellore cattle for improvement of carcass and meat quality. São Paulo State University (Unesp) School of Agricultural and Veterinarian Science Department of Animal Science, Via de Acesso Prof. Paulo Donato Castellane s/n, SP University of Wisconsin Department of Animal and Dairy Sciences, 436 Animal Science Building, 1675 Observatory Dr. São Paulo State University (Unesp) School of Veterinary Medicine and Animal Science Department of Animal Breeding and Nutrition, Rua Prof. Doutor Walter Mauricio Correa, s/n, SP National Council of Technological and Scientific Development (CNPq) São Paulo State University (Unesp) School of Agricultural and Veterinarian Science Department of Animal Science, Via de Acesso Prof. Paulo Donato Castellane s/n, SP São Paulo State University (Unesp) School of Veterinary Medicine and Animal Science Department of Animal Breeding and Nutrition, Rua Prof. Doutor Walter Mauricio Correa, s/n, SP CAPES: 001 FAPESP: 2009/16118-5 FAPESP: 2016/02366-0 FAPESP: 2017/18779-5