scholarly journals Beef of Nellore cattle has limited tenderization despite pH decline in Longissimus lumborum

2022 ◽  
Vol 79 (3) ◽  
Author(s):  
Patricia Maloso Ramos ◽  
Priscila Robertina dos Santos-Donado ◽  
Giuliana Micai de Oliveira ◽  
Carmen Josefina Contreras–Castillo ◽  
Tracy L. Scheffler ◽  
...  
Keyword(s):  
Longissimus Lumborum ◽  
Nellore Cattle

scholarly journals Selection for Growth and Precocity Alters Muscle Metabolism in Nellore Cattle

Metabolites ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 58 ◽  
Author(s):  
Nara Regina Brandão Cônsolo ◽  
Juliana da Silva ◽  
Vicente Luiz Macedo Buarque ◽  
Angel Higuera-Padilla ◽  
Luis Carlos Garibaldi Simon Barbosa ◽  
...  
Keyword(s):  
Muscle Protein ◽  
Fat Metabolism ◽  
Genetic Selection ◽  
Muscle Metabolism ◽  
High Growth ◽  
High Concentration ◽  
Longissimus Lumborum ◽  
Nellore Cattle ◽  
Selection For ◽  
The Relationship

To clarify the relationship between beef genetic selection for growth and precocity with muscle metabolism and metabolites, we performed metabolomic analysis using Longissimus lumborum (LL) muscle from Nellore cattle with divergent selection for these traits (high growth, HG; low growth, LG; high precocity, HP; low precocity, LP). Genetic potential for growth affected muscle protein and energetic metabolism. HG animals had a high concentration of arginine, carnosine, and leucine compared to LG animals. HP animals presented a high concentration of glutamine, betaine, creatinine, isoleucine, carnitine, acetyl carnitine, and lower levels of glucose compared to LP animals, affecting protein and fatty acid metabolism. Intensity of selection (high or low) was correlated with changes in protein metabolism, and the type of selection (growth or precocity) affected fat metabolism. In conclusion, both HG and HP appear to be correlated with a high concentration of protein metabolites and changes in protein metabolic pathways, while selection for precocity is more correlated with changes in fat metabolism compared to animals selected for growth.

scholarly journals Influence of muscle source on proximate composition, texture profile and protein oxidation of beef from grain-finished Bos indicus cattle

2019 ◽  
Vol 49 (4) ◽  
Author(s):  
Ana Paula Amaral de Alcântara Salim ◽  
Surendranath Premakumari Suman ◽  
Anna Carolina Vilhena da Cruz Silva Canto ◽  
Bruno Reis Carneiro da Costa-Lima ◽  
Fernanda Medeiros Viana ◽  
...  
Keyword(s):  
Protein Oxidation ◽  
Proximate Composition ◽  
Protein Concentration ◽  
Bos Indicus ◽  
Muscle Metabolism ◽  
Color Stability ◽  
Texture Profile ◽  
Longissimus Lumborum ◽  
Nellore Cattle ◽  
Psoas Major

ABSTRACT: The aim of this research was to investigate the influence of muscle type on protein oxidation, texture profile (hardness, springiness, cohesiveness and chewiness) and proximate composition of beef from grain-finished Bos indicus (Nellore) cattle in Brazil. The muscles longissimus lumborum (LL) and psoas major (PM) were collected 24 h post mortem from eight (n=8) Nellore bull carcasses, fabricated into five steaks (1.5-cm) and displayed under aerobic conditions for nine days at 4 °C. Proximate composition and texture profile were analyzed on day 0, whereas protein oxidation was analyzed during 9 days of storage. LL exhibited greater (P<0.05) protein concentration than PM steaks, whereas PM demonstrated greater (P<0.05) lipid and ash content than their correlative LL. In addition, LL steaks exhibited greater (P<0.05) hardness, springiness, cohesiveness and chewiness than PM steaks. In contrast, protein oxidation was greater (P<0.05) in PM than in LL steaks throughout the storage. The results suggest that the differences of muscle metabolism and composition contributed to the variation on biochemical attributes and texture profile of LL and PM steaks. Muscle-specific strategies are indicated to improve the color stability of PM steaks from grain-finished Bos indicus cattle.

Economic performance evaluation of Brangus and Nellore cattle breed naturally infested with Rhipicephalus microplus in an extensive production system in Central-West Brazil

2019 ◽  
Vol 78 (4) ◽  
pp. 565-577 ◽  
Author(s):  
Paulino Bonatte Junior ◽  
Vinicius da Silva Rodrigues ◽  
Marcos Valério Garcia ◽  
Leandro de Oliveira Souza Higa ◽  
Namor Pinheiro Zimmermann ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Economic Performance ◽  
Production System ◽  
Cattle Breed ◽  
Rhipicephalus Microplus ◽  
Nellore Cattle

scholarly journals Transcriptomic Profiling of Skeletal Muscle Reveals Candidate Genes Influencing Muscle Growth and Associated Lipid Composition in Portuguese Local Pig Breeds

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1423
Author(s):  
André Albuquerque ◽  
Cristina Óvilo ◽  
Yolanda Núñez ◽  
Rita Benítez ◽  
Adrián López-Garcia ◽  
...  
Keyword(s):  
Candidate Genes ◽  
Muscle Growth ◽  
Rna Seq ◽  
Next Generation Sequencing Technology ◽  
Pig Breeds ◽  
Nfkb Activation ◽  
Main Gene ◽  
Slow Type ◽  
Longissimus Lumborum ◽  
Generation Sequencing

Gene expression is one of the main factors to influence meat quality by modulating fatty acid metabolism, composition, and deposition rates in muscle tissue. This study aimed to explore the transcriptomics of the Longissimus lumborum muscle in two local pig breeds with distinct genetic background using next-generation sequencing technology and Real-Time qPCR. RNA-seq yielded 49 differentially expressed genes between breeds, 34 overexpressed in the Alentejano (AL) and 15 in the Bísaro (BI) breed. Specific slow type myosin heavy chain components were associated with AL (MYH7) and BI (MYH3) pigs, while an overexpression of MAP3K14 in AL may be associated with their lower loin proportion, induced insulin resistance, and increased inflammatory response via NFkB activation. Overexpression of RUFY1 in AL pigs may explain the higher intramuscular (IMF) content via higher GLUT4 recruitment and consequently higher glucose uptake that can be stored as fat. Several candidate genes for lipid metabolism, excluded in the RNA-seq analysis due to low counts, such as ACLY, ADIPOQ, ELOVL6, LEP and ME1 were identified by qPCR as main gene factors defining the processes that influence meat composition and quality. These results agree with the fatter profile of the AL pig breed and adiponectin resistance can be postulated as responsible for the overexpression of MAP3K14′s coding product NIK, failing to restore insulin sensitivity.

scholarly journals Gene Expression and Carcass Traits Are Different between Different Quality Grade Groups in Red-Faced Hereford Steers

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1910
Author(s):  
Bailey Engle ◽  
Molly Masters ◽  
Jane Ann Boles ◽  
Jennifer Thomson
Keyword(s):  
Gene Expression ◽  
Transcriptome Profiling ◽  
Fat Deposition ◽  
Lower Shear ◽  
The Us ◽  
Quality Grade ◽  
Longissimus Lumborum ◽  
Muscle Biochemistry ◽  
Marbling Deposition ◽  
Insight Into

Fat deposition is important to carcass value and some palatability characteristics. Carcasses with higher USDA quality grades produce more value for producers and processors in the US system and are more likely to have greater eating satisfaction. Using genomics to identify genes impacting marbling deposition provides insight into muscle biochemistry that may lead to ways to better predict fat deposition, especially marbling and thus quality grade. Hereford steers (16) were managed the same from birth through harvest after 270 days on feed. Samples were obtained for tenderness and transcriptome profiling. As expected, steaks from Choice carcasses had a lower shear force value than steaks from Select carcasses; however, steaks from Standard carcasses were not different from steaks from Choice carcasses. A significant number of differentially expressed (DE) genes was observed in the longissimus lumborum between Choice and Standard carcass RNA pools (1257 genes, p < 0.05), but not many DE genes were observed between Choice and Select RNA pools. Exploratory analysis of global muscle tissue transcriptome from Standard and Choice carcasses provided insight into muscle biochemistry, specifically the upregulation of extracellular matrix development and focal adhesion pathways and the downregulation of RNA processing and metabolism in Choice versus Standard. Additional research is needed to explore the function and timing of gene expression changes.

scholarly journals Effect of Dietary Brown Seaweed (Macrocystis pyrifera) Additive on Meat Quality and Nutrient Composition of Fattening Pigs

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1720
Author(s):  
Nancy Jerez-Timaure ◽  
Melissa Sánchez-Hidalgo ◽  
Rubén Pulido ◽  
Jonathan Mendoza
Keyword(s):  
Meat Quality ◽  
Cholesterol Metabolism ◽  
Biological Effects ◽  
Brown Seaweed ◽  
Macrocystis Pyrifera ◽  
Nutrient Composition ◽  
Composition Analysis ◽  
Regular Diet ◽  
Longissimus Lumborum ◽  
Fattening Pigs

The objective of this study was to evaluate the effects of dietary brown seaweed (Macrocystis pyrifera) additive (SWA) on meat quality and nutrient composition of commercial fattening pigs. The treatments were: Regular diet with 0% inclusion of SWA (CON); Regular diet with 2% SWA (2%-SWA); Regular diet with 4% SWA (4%-SWA). After slaughtering, five carcasses from each group were selected, and longissimus lumborum (LL) samples were taken for meat quality and chemical composition analysis. Meat quality traits (except redness intensity) were not affected (p > 0.05) by treatments. Samples from the 4%-SWA treatment showed the lowest a value than those from the 2%-SWA and CON treatments (p = 0.05). Meat samples from the 4%-SWA group contained 3.37 and 3.81 mg/100 g more of muscle cholesterol than CON and 2% SWA groups, respectively (p < 0.05). The SWA treatments affected (p ≤ 0.05) the content of ash, Mn, Fe, and Cu. The LL samples from 4%-SWA had the highest content of ash; however, they showed 0.13, 0.45, and 0.23 less mg/100 g of Mn, Fe, and Zn, respectively, compared to samples from CON (p ≤ 0.05). Fatty acids composition and macro minerals content (Na, Mg, and K) did not show variation due to the SWA treatments. Further studies are needed to understand the biological effects of these components on adipogenesis, cholesterol metabolism, and mineral deposition in muscle.

Genomic prediction ability for carcass composition indicator traits in Nellore cattle

2021 ◽  
Vol 245 ◽  
pp. 104421
Author(s):  
Rosiane P. Silva ◽  
Rafael Espigolan ◽  
Mariana P. Berton ◽  
Raysildo B. Lôbo ◽  
Cláudio U. Magnabosco ◽  
...  
Keyword(s):  
Genomic Prediction ◽  
Carcass Composition ◽  
Prediction Ability ◽  
Nellore Cattle ◽  
Indicator Traits

scholarly journals Consumer Perceptions of Meat Redness Were Strongly Influenced by Storage and Display Times

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 540
Author(s):  
Maddison T. Corlett ◽  
David W. Pethick ◽  
Khama R. Kelman ◽  
Robin H. Jacob ◽  
Graham E. Gardner
Keyword(s):  
Correlation Coefficient ◽  
Storage Period ◽  
Intramuscular Fat ◽  
Consumer Perceptions ◽  
Display Time ◽  
Eye Muscle ◽  
Longissimus Lumborum ◽  
Retail Display ◽  
Lamb Growth ◽  
Long Storage

Lamb (n = 79) meat colour was scored by 879 untrained consumers using a scale of 0 (brown) to 100 (red). This consumer colour score (CCS) was obtained on m. longissimus lumborum (loin) and m. semimembranosus (topside), stored for short (5–7 days), medium (33–35 days), and long periods (110–112 days) and a retail display time of up to 4 days. Consumers perceived topside to be less red initially and changed from red to brown more rapidly when stored for the long-storage period (p < 0.01). Whereas, the initial CCS of loin samples were similar across the storage periods (p > 0.05). CCS and the instrument measure oxy/met (reflectance of light at wavelengths 630 nm and 580 nm) had a low correlation coefficient of 0.33 (p < 0.01). The propensity for lamb growth and leanness indicated by sire breeding values for lamb weight, eye muscle depth, eye muscle fat depth, and loin intramuscular fat had varied and inconsistent effects on CCS. Therefore, even the selection on CCS.

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