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

Autor: Bresolin T; São Paulo State University (Unesp), School of Agricultural and Veterinarian Science, Department of Animal Science, Via de Acesso Prof. Paulo Donato Castellane s/n, 14884-900 Jaboticabal, SP, Brazil; University of Wisconsin, Department of Animal and Dairy Sciences, 436 Animal Science Building, 1675 Observatory Dr., Madison, WI 53706, USA., Passafaro TL; University of Wisconsin, Department of Animal and Dairy Sciences, 436 Animal Science Building, 1675 Observatory Dr., Madison, WI 53706, USA., Braz CU; São Paulo State University (Unesp), School of Agricultural and Veterinarian Science, Department of Animal Science, Via de Acesso Prof. Paulo Donato Castellane s/n, 14884-900 Jaboticabal, SP, Brazil; University of Wisconsin, Department of Animal and Dairy Sciences, 436 Animal Science Building, 1675 Observatory Dr., Madison, WI 53706, USA., Alves AAC; São Paulo State University (Unesp), School of Agricultural and Veterinarian Science, Department of Animal Science, Via de Acesso Prof. Paulo Donato Castellane s/n, 14884-900 Jaboticabal, SP, Brazil., Carvalheiro R; São Paulo State University (Unesp), School of Agricultural and Veterinarian Science, Department of Animal Science, Via de Acesso Prof. Paulo Donato Castellane s/n, 14884-900 Jaboticabal, SP, Brazil; National Council of Technological and Scientific Development (CNPq), Brazil., Chardulo LAL; 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, 18618-681 Botucatu, SP, Brazil., de Magalhães Rosa GJ; University of Wisconsin, Department of Animal and Dairy Sciences, 436 Animal Science Building, 1675 Observatory Dr., Madison, WI 53706, USA., de Albuquerque LG; São Paulo State University (Unesp), School of Agricultural and Veterinarian Science, Department of Animal Science, Via de Acesso Prof. Paulo Donato Castellane s/n, 14884-900 Jaboticabal, SP, Brazil; National Council of Technological and Scientific Development (CNPq), Brazil. Electronic address: galvao.albuquerque@unesp.br.
Jazyk: angličtina
Zdroj: Meat science [Meat Sci] 2022 May; Vol. 187, pp. 108771. Date of Electronic Publication: 2022 Feb 14.
DOI: 10.1016/j.meatsci.2022.108771
Abstrakt: 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 cm 2 /kg (0.09), 0.43 kg/kg (0.29), 0.10 cm 2 /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.
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Databáze: MEDLINE
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