Thesis Abstract Prospecting genetic markers’ influence on growth, carcass and meat quality traits in Nellore cattle

2009 ◽  
Vol 8 (4) ◽  
pp. 1397-1397
Author(s):  
F.M. Rezende
Keyword(s):  
Meat Quality ◽  
Genetic Markers ◽  
Quality Traits ◽  
Meat Quality Traits ◽  
Nellore Cattle

Gender status effect on carcass and meat quality traits of feedlot Angus × Nellore cattle

2019 ◽  
Vol 90 (8) ◽  
pp. 1078-1089 ◽  
Author(s):  
Lenise Freitas Mueller ◽  
Júlio César Carvalho Balieiro ◽  
Adrielle Matias Ferrinho ◽  
Taiane da Silva Martins ◽  
Rosana Ruegger Pereira Silva Corte ◽  
...  
Keyword(s):  
Meat Quality ◽  
Quality Traits ◽  
Meat Quality Traits ◽  
Status Effect ◽  
Gender Status ◽  
Nellore Cattle

scholarly journals Carcass Traits, Meat Characteristics, and Economic Viability of Grazing Nellore Cattle Produced Under Different Supplementation Strategies in the Tropics

2021 ◽  
Author(s):  
Jenifer Maira Lima Ramos ◽  
Julián Andrés Castillo Vargas ◽  
Evellyn Aryane Lopes Diniz ◽  
Natália Gomes Lacerda ◽  
Rafael Mezzomo ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Meat Quality ◽  
Carcass Traits ◽  
Economic Viability ◽  
Quality Traits ◽  
Concentrate Supplementation ◽  
Meat Quality Traits ◽  
Nellore Cattle ◽  
The Tropics ◽  
Dry And Rainy Seasons

Abstract This study explored the effects of different supplementation strategies in the dry and rainy seasons in the tropics on the carcass traits, meat quality, and economic viability of Nellore cattle produced under grazing conditions. For this purpose, twenty-eight non-castrated male animals (18 months) with an initial body weight of 327.93 ± 4.22 kg were used. The animals were equitably distributed in a randomized complete design thorough four supplementation strategies as follows: i) mineral supplementation (MS) in both dry and rainy seasons (MS/MS), ii) MS in the dry season and concentrate supplementation (CS) in the rainy season (MS/CS), iii) CS in the dry season and MS in the rainy season (CS/MS), and iv) CS in both dry and rainy seasons (CS/CS). Thereafter, carcass traits, primary carcass cut yields, meat quality traits, chemical composition of meat, and economic viability of cattle production across different supplementation strategies were determined. Data revealed that animals under CS/CS showed the greatest (P < 0.01) hot carcass weights among the other supplementation strategies evaluated. Conversely, supplementation strategy did not affect (P > 0.05) carcass traits (the ribeye area, final pH, and forequarter), meat quality traits (shear force, myofibrillar fragment index, sarcomere length, and color), and meat chemical composition (crude protein, fat, and moisture) of the animals. The effective operational cost, total cost, gross revenue, and profit of animals under CS/CS showed the greatest values, whereas the lowest ones were obtained for the animals under MS/MS. In conclusion, data suggest that concentrate supplementation during at least one season (dry or rainy) produces similar meat quality traits and chemical composition of meat, but different hot carcass weight, backfat thickness and hindquarter proportion to those observed when animals were supplemented with concentrate in both seasons. Additionally, CS/CS animals, despite having a higher total cost, have greater profitability when raised in tropical pasture.

scholarly journals Genome-Wide Association Study of Meat Quality Traits in Nellore Cattle

PLoS ONE ◽  
2016 ◽  
Vol 11 (6) ◽  
pp. e0157845 ◽  
Author(s):  
Ana F. B. Magalhães ◽  
Gregório M. F. de Camargo ◽  
Gerardo A. Fernandes ◽  
Daniel G. M. Gordo ◽  
Rafael L. Tonussi ◽  
...  
Keyword(s):  
Association Study ◽  
Meat Quality ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Quality Traits ◽  
Meat Quality Traits ◽  
Genome Wide ◽  
Nellore Cattle

Genetic markers on BTA14 predictive for residual feed intake in beef steers and their effects on carcass and meat quality traits

2012 ◽  
Vol 43 (5) ◽  
pp. 599-603 ◽  
Author(s):  
A. K. Lindholm-Perry ◽  
L. A. Kuehn ◽  
W. M. Snelling ◽  
T. P. L. Smith ◽  
C. L. Ferrell ◽  
...  
Keyword(s):  
Meat Quality ◽  
Genetic Markers ◽  
Feed Intake ◽  
Residual Feed Intake ◽  
Beef Steers ◽  
Quality Traits ◽  
Meat Quality Traits

Identification of genetic markers associated with residual feed intake and meat quality traits in the pig

Meat Science ◽  
2010 ◽  
Vol 84 (4) ◽  
pp. 645-650 ◽  
Author(s):  
B. Fan ◽  
S. Lkhagvadorj ◽  
W. Cai ◽  
J. Young ◽  
R.M. Smith ◽  
...  
Keyword(s):  
Meat Quality ◽  
Genetic Markers ◽  
Feed Intake ◽  
Residual Feed Intake ◽  
Quality Traits ◽  
Meat Quality Traits

Association analysis between CMYA5 gene and meat quality traits in Hunan black pig

2013 ◽  
Vol 38 (1) ◽  
pp. 64-68
Author(s):  
Ji ZHU ◽  
Jian LIU ◽  
Jian-bang SUN ◽  
Shi-liu YANG ◽  
Jing-ru LI ◽  
...  
Keyword(s):  
Meat Quality ◽  
Association Analysis ◽  
Quality Traits ◽  
Meat Quality Traits ◽  
I Gene

scholarly journals Prediction of meat quality traits in the abattoir using portable near-infrared spectrometers: heritability of predicted traits and genetic correlations with laboratory-measured traits

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Simone Savoia ◽  
Andrea Albera ◽  
Alberto Brugiapaglia ◽  
Liliana Di Stasio ◽  
Alessio Cecchinato ◽  
...  
Keyword(s):  
Meat Quality ◽  
Near Infrared ◽  
External Validation ◽  
Genetic Correlations ◽  
Genetic Selection ◽  
Quality Traits ◽  
Eye Muscle ◽  
Meat Quality Traits ◽  
Color Traits ◽  
Selection Of

Abstract Background The possibility of assessing meat quality traits over the meat chain is strongly limited, especially in the context of selective breeding which requires a large number of phenotypes. The main objective of this study was to investigate the suitability of portable infrared spectrometers for phenotyping beef cattle aiming to genetically improving the quality of their meat. Meat quality traits (pH, color, water holding capacity, tenderness) were appraised on rib eye muscle samples of 1,327 Piemontese young bulls using traditional (i.e., reference/gold standard) laboratory analyses; the same traits were also predicted from spectra acquired at the abattoir on the intact muscle surface of the same animals 1 d after slaughtering. Genetic parameters were estimated for both laboratory measures of meat quality traits and their spectra-based predictions. Results The prediction performances of the calibration equations, assessed through external validation, were satisfactory for color traits (R2 from 0.52 to 0.80), low for pH and purge losses (R2 around 0.30), and very poor for cooking losses and tenderness (R2 below 0.20). Except for lightness and purge losses, the heritability estimates of most of the predicted traits were lower than those of the measured traits while the genetic correlations between measured and predicted traits were high (average value 0.81). Conclusions Results showed that NIRS predictions of color traits, pH, and purge losses could be used as indicator traits for the indirect genetic selection of the reference quality phenotypes. Results for cooking losses were less effective, while the NIR predictions of tenderness were affected by a relatively high uncertainty of estimate. Overall, genetic selection of some meat quality traits, whose direct phenotyping is difficult, can benefit of the application of infrared spectrometers technology.

scholarly journals Phenotypic and genetic variation of ultraviolet–visible-infrared spectral wavelengths of bovine meat

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Giovanni Bittante ◽  
Simone Savoia ◽  
Alessio Cecchinato ◽  
Sara Pegolo ◽  
Andrea Albera
Keyword(s):  
Meat Quality ◽  
Genetic Improvement ◽  
Near Infrared ◽  
Infrared Region ◽  
Phenotypic Variance ◽  
Quality Traits ◽  
Meat Quality Traits ◽  
Infrared Spectral ◽  
Portable Spectrometers ◽  
Absorbance Spectra

AbstractSpectroscopic predictions can be used for the genetic improvement of meat quality traits in cattle. No information is however available on the genetics of meat absorbance spectra. This research investigated the phenotypic variation and the heritability of meat absorbance spectra at individual wavelengths in the ultraviolet–visible and near-infrared region (UV–Vis-NIR) obtained with portable spectrometers. Five spectra per instrument were taken on the ribeye surface of 1185 Piemontese young bulls from 93 farms (13,182 Herd-Book pedigree relatives). Linear animal model analyses of 1481 single-wavelengths from UV–Vis-NIRS and 125 from Micro-NIRS were carried out separately. In the overlapping regions, the proportions of phenotypic variance explained by batch/date of slaughter (14 ± 6% and 17 ± 7%,), rearing farm (6 ± 2% and 5 ± 3%), and the residual variances (72 ± 10% and 72 ± 5%) were similar for the UV–Vis-NIRS and Micro-NIRS, but additive genetics (7 ± 2% and 4 ± 2%) and heritability (8.3 ± 2.3% vs 5.1 ± 0.6%) were greater with the Micro-NIRS. Heritability was much greater for the visible fraction (25.2 ± 11.4%), especially the violet, blue and green colors, than for the NIR fraction (5.0 ± 8.0%). These results allow a better understanding of the possibility of using the absorbance of visible and infrared wavelengths correlated with meat quality traits for the genetic improvement in beef cattle.

Sign in / Sign up

Export Citation Format

Share Document