Genetic variants in glucocorticoid and mineralocorticoid receptors are associated with concentrations of plasma cortisol, muscle glycogen content, and meat quality traits in male Nellore cattle

Pre-slaughter stress may decrease muscle glycogen content, a key element for a suitable low ultimate pH and prevention of dark-cutting meat. Body temperature monitoring is a tool used in research on animal stress, as an indicator of stress events. Possible relationships between body temperature of sheep and post-mortem muscle glycogen were investigated in this study. Body temperature was measured with intravaginal loggers inserted into each animal at 3 days pre-slaughter, to record body temperature every 3 min over a period of 3 days. Blood samples were collected from each animal at exsanguination for measurement of glucose and lactic acid concentrations. The muscle content of glycogen and lactic acid were determined in samples of M. longissimus collected at the level of the 13th rib, at 1 h post-slaughter. A plot of body temperature versus time showed a rise in body temperature from all animals during events such as mustering, loading onto the truck, unloading at the abattoir, during pre-slaughter handling and at slaughter. Pearson’s correlation coefficients were determined between (1) the main temperature increments occurring between farm and slaughter; and (2) post-slaughter muscle glycogen and lactate levels. A significant negative correlation was detected between elevation in core body temperature due to physical stress of sheep and muscle glycogen levels at slaughter. A low correlation was detected between body temperature and blood glucose or lactate concentrations. Further research should examine the relationship between core body temperature and meat quality in order to better understand the complex relationship between animal stress and meat quality.

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

Animal Science Journal ◽

10.1111/asj.13250 ◽

2019 ◽

Vol 90 (8) ◽

pp. 1078-1089 ◽

Cited By ~ 5

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

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

10.21203/rs.3.rs-1075720/v1 ◽

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.

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PSIX-31 Early postmortem pH and glycogen content, and their association with meat quality traits in grass-fed steers.

Journal of Animal Science ◽

10.1093/jas/sky404.621 ◽

2018 ◽

Vol 96 (suppl_3) ◽

pp. 283-283 ◽

Cited By ~ 1

Author(s):

N Jerez-Timaure ◽

G Brickmann ◽

A Ramirez ◽

P Strobel ◽

M Berkhoff

Keyword(s):

Meat Quality ◽

Glycogen Content ◽

Quality Traits ◽

Meat Quality Traits ◽

Early Postmortem

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

Genetics and Molecular Research ◽

10.4238/vol8-4ta025 ◽

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

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

PLoS ONE ◽

10.1371/journal.pone.0157845 ◽

2016 ◽

Vol 11 (6) ◽

pp. e0157845 ◽

Cited By ~ 38

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

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Performance, carcass and meat quality traits of grazing cattle with different exit velocity

Animal Production Science ◽

10.1071/an18064 ◽

2019 ◽

Vol 59 (9) ◽

pp. 1752 ◽

Cited By ~ 1

Author(s):

M. M. Della Rosa ◽

E. Pavan ◽

S. Maresca ◽

M. Spetter ◽

F. Ramiro

Keyword(s):

Meat Quality ◽

Muscle Glycogen ◽

Shear Force ◽

Subcutaneous Fat ◽

Quality Traits ◽

Exit Velocity ◽

Meat Quality Traits ◽

Grazing Cattle ◽

Subcutaneous Fat Thickness ◽

Fat Thickness

To evaluate the effect of grazing cattle temperament on performance, as well as carcass and meat quality traits, exit velocity (EV) was assessed throughout two production cycles (PC1, n = 38 and PC2, n = 52). Individual EV determinations were assessed throughout each PC and then 100-days period averages were calculated for each animal. Animals were ranked based on their EV (EV-RANK) in the first 100-days period as SLOW, FAST and MEDIUM. The EV decreased from weaning to slaughter in FAST and MEDIUM (P < 0.05); but did not change in SLOW (P > 0.10). Initial liveweight was lowest in FAST and highest in MEDIUM (P = 0.03). DM intake (P = 0.08) and average daily gain (P = 0.94) were not affected by EV-RANK, but carcass subcutaneous fat thickness was lowest in FAST and highest in MEDIUM (P = 0.02). Longissimus muscle colour and shear-force were not affected by EV-RANK (P > 0.05), but muscle glycogen content at slaughter was higher in MEDIUM than in SLOW or FAST (P = 0.047). No EV-RANK effects were observed in the present study on meat colour and shear-force. However, its effects on subcutaneous fat thickness and muscle glycogen could result in low meat quality of temperamental cattle under more stressful handling situations.

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Effects of pre-slaughter ascorbic acid administration on some physiological stress response and meat quality traits of lambs and kids subjected to road transport

Animal Production Science ◽

10.1071/an17554 ◽

2019 ◽

Vol 59 (5) ◽

pp. 954

Author(s):

Muammer Sarıbey ◽

Serhat Karaca

Keyword(s):

Ascorbic Acid ◽

Meat Quality ◽

Muscle Glycogen ◽

Shear Force ◽

Road Transport ◽

Quality Traits ◽

Glycogen Concentration ◽

Meat Quality Traits ◽

Acid Administration ◽

Muscle Glycogen Concentration

The present study determined the effects of pre-slaughter ascorbic acid administration on some physiological indicators and meat quality traits of road transport-stressed lambs and kids. Eighteen lambs and 18 kids were divided into the following three groups: no transportation (T0), 3-h transportation (T3), and ascorbid acid administered at 125 mg/kg before 3-h transportation (T3+C). The liveweight loss and rectal temperature were similar, while there were significant differences among groups for some biochemical parameters in both lambs and kids. Glucose concentrations significantly increased after transportation in lambs (P = 0.005) and kids (P < 0.001). Ascorbic acid had significant effects on serum glucose of lambs. T3 lambs had higher glucose concentrations than did T0 lambs (P < 0.001), while T0 and T3+C lambs were found to have similar concentrations. Oxidative status in lambs and kids, as determined by serum malondialdehyde concentration, did not differ among groups. However, some meat quality traits were negatively influenced by transportation. T3 lambs had a significantly lower muscle glycogen concentration than did T0 and T3+C lambs (P = 0.018), while ultimate pH was similar among groups. Muscle glycogen concentration was significantly lower (P = 0.008) and ultimate pH was higher in T3 and T3+C kids (P = 0.028). T3 and T3+C groups had darker meat (L*) than did T0 groups both in lambs and kids, whereas a*, cooking loss and water-holding capacity were similar among groups. The effect of ascorbic acid on meat toughness was significant and shear force value in T0 lambs was lower than that in T3 lambs (P = 0.009), while T0 and T3+C lambs were found to have similar shear force values. Overall, the administration of ascorbic acid to lambs before transportation could partly reduce the adverse effects of road transportation stress, whereas its effects on kids were found to be insignificant.

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