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Application of proteomic to investigate the different degrees of meat tenderness in Nellore breed

Malheiros, J. M.; Enriquez Valencia, Cruz Elena; Braga, Camila Pereira; Vieira, José Cavalcante Souza; Vieira, D. S.; Pereira, Guilherme Luis; Curi, Rogerio Abdallah; Machado Neto, Otávio; Oliveira, H. N.; Padilha, Pedrode Magalhães; Chardulo, Luis Artur (2021)

This study describes the association between meat tenderness and abundance of soluble muscle proteins in Nellore bulls (Bos indicus) using a proteomic approach. We evaluated shear force (SF) of Longissimus thoracis muscle ...
Carcass and meat quality of Nellore cattle (Bos taurus indicus) belonging to the breeding programs

Malheiros, Jéssica Moraes; Enriquez Valencia, Elena; Silva Josineudson, Augusto Ii Vasconcelos; De Oliveira, Henrique; Curi, Rogerio Abdallah; Albuquerque, L. G.; Chardulo, Luis Artur (2020)

The objective of this study was to estimate and describe phenotypic traits for carcass and meat quality in Nellore cattle belonging to the breeding programs. Data from 718 Nellore animals participated in the Delta Gen, CRV ...

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Application of proteomic to investigate the different degrees of meat tenderness in Nellore breed
...
Malheiros, J. M. | 2021

This study describes the association between meat tenderness and abundance of soluble muscle proteins in Nellore bulls (Bos indicus) using a proteomic approach. We evaluated shear force (SF) of Longissimus thoracis muscle 24 h after slaughter and selected three experimental groups of animals with moderately tender (TE; SF = 3.9 ± 0.7 kg), moderately tough (TO; SF = 5.6 ± 0.7 kg) and very tough meat (TO+; SF = 7.9 ± 1.4 kg). Proteome was investigated by two-dimensional electrophoresis (2D-PAGE) in combination with electrospray ionization-tandem mass spectrometry (ESI–MS/MS). The metabolic proteins triosephosphate isomerase (TPI1) and phosphoglucomutase 1 (PGM1), the structural protein profilin 1 (PFN1), and cytosol aminopeptidase (LAP3) were up-regulated (P < 0.05) in the TE meat group when compared to the TO and TO+ groups. Actin structural proteins (ACTA1, ACTB, and ACTG1), the oxidative stress protein peroxiredoxin (PRDX6, PRDX2, PRDX1, and PARK7), heat shock protein isoforms, and co-chaperones (CDC37 and STIP1) were up-regulated (P < 0.05) in the TO and TO+ meat groups. In addition, we also identified proteins PFN1, LAP3, PRDX1, PRDX2, HSPD1, and ARHGDIA to be associated with beef tenderness. The results reported herein demonstrated that meat tenderness in Nellore cattle depends on the modulation and expression of a set of proteins involved in different biological pathways.

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Carcass and meat quality of Nellore cattle (Bos taurus indicus) belonging to the breeding programs
...
Malheiros, Jéssica Moraes | 2020

The objective of this study was to estimate and describe phenotypic traits for carcass and meat quality in Nellore cattle belonging to the breeding programs. Data from 718 Nellore animals participated in the Delta Gen, CRV Paint and Nelore Qualitas breeding programs were used. Meat quality traits were measured and the data were analyzed. The following means and standard deviations of the meat quality traits were obtained: shear force (SF = 5.7 ± 1.3 kg), myofibril fragmentation index (MFI = 32.0 ± 15.3), cooking loss (CL = 27.7 ± 3.1%), intramuscular lipid content (ILC = 0.9 ± 0.5%), backfat thickness (BFT = 4.2 ± 1.4 mm), marbling score (MS = 2.6 ± 0.36), rib eye area (REA = 72.8 ± 7.35 cm2) and instrumental color (lightness (L* = 27.9 ± 2.7), redness (a* = 12.4 ± 1.86), yellowness (b* = 5.5 ± 1.0)). Significant phenotypic correlations were observed between BFT and MS (0.2314), and between MS and ILC (0.1308). A negative and significant correlation was found between SF and MFI (-0.5525); however, the correlation with MFI was low in animals with SF values higher than 6 kg. In principal component analysis (PCA), the first four eigenvalues of the matrix of direct additive genetic variance explained 61.26% of the total additive genetic variance in the meat quality traits. The most important meat quality traits in PC1 were a*, b* and CL. PC2 was characterized by MFI and color (a* and b*), PC3 by MS, BFT and L* and PC4 by ILC, L* and b*. Furthermore, BFT was positively associated with MS, SF and CL, and SF was negatively associated with MFI. The present study suggests that muscle growth and backfat thickness were satisfactory; however, intramuscular fat deposition and meat tenderness still require more attention from the breeding programs.

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Browsing by Author "Curi, Rogerio Abdallah"

Application of proteomic to investigate the different degrees of meat tenderness in Nellore breed ﻿

Carcass and meat quality of Nellore cattle (Bos taurus indicus) belonging to the breeding programs ﻿

Envíos recientes

Application of proteomic to investigate the different degrees of meat tenderness in Nellore breed

Carcass and meat quality of Nellore cattle (Bos taurus indicus) belonging to the breeding programs

Application of proteomic to investigate the different degrees of meat tenderness in Nellore breed

Carcass and meat quality of Nellore cattle (Bos taurus indicus) belonging to the breeding programs