| Full text | |
| Author(s): |
Bresolin, Tiago
;
Passafaro, Tiago Luciano
;
Braz, Camila Urbano
;
Carvalho Alves, Anderson Antonio
;
Carvalheiro, Roberto
;
Loyola Chardulo, Luiz Artur
;
de Magalhaes Rosa, Guilherme Jordao
;
de Albuquerque, Lucia Galvao
Total Authors: 8
|
| Document type: | Journal article |
| Source: | MEAT SCIENCE; v. 187, p. 7-pg., 2022-02-25. |
| Abstract | |
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 scoregrade/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. (AU) | |
| FAPESP's process: | 09/16118-5 - Genomic tools to genetic improvement of direct economic important traits in Nelore cattle |
| Grantee: | Lucia Galvão de Albuquerque |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/02366-0 - SEARCH FOR CAUSAL STRUCTURES USING GRAPHICAL MODELS IN NELORE CATTLE |
| Grantee: | Tiago Bresolin |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 17/18779-5 - Phenotypic causal inference using multi-omics data in Nelore cattle |
| Grantee: | Tiago Bresolin |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |