scholarly journals Instrumental meat quality characteristics associated with aged m. longissimus thoracis from the four Canadian beef quality grades

2016 ◽  
Vol 96 (2) ◽  
pp. 143-153 ◽  
Author(s):  
Jose Puente ◽  
Saranyu S. Samanta ◽  
Heather L. Bruce
Keyword(s):  
Meat Quality ◽  
Shear Force ◽  
Quality Characteristics ◽  
Eating Quality ◽  
Drip Loss ◽  
Beef Quality ◽  
Before And After ◽  
Sources Of Variation ◽  
Plot Design

Canadian beef is quality graded to characterize the potential eating quality of the cooked product. Instrumental meat quality characteristics of 48 m. longissimus thoracis (LT, rib eye) from four Canadian beef grades (Canada A, AA, AAA, and Prime, n = 12) before and after an additional 14-d aging were compared using a split plot design with grade, aging, and their interaction as fixed sources of variation. Mean percentage intramuscular fat was greatest in Canada Prime muscle and least in Canada A and AA muscles (P < 0.0001), whereas mean percentage drip loss was lower in Canada Prime muscle than in muscle from all other grades (P = 0.0348). Canada Prime and AAA muscles were redder and yellower than muscles from other grades even after aging (P < 0.03), which may be associated with increased fat content and indicative of accelerated myoglobin oxidation and increased myoglobin oxygenation. Shear force was not different among the Canada grades, although the differences between Canada AA cooked beef LT and that of Canada Prime and AAA carcasses approached significance (P = 0.0993). Results indicated that Canada quality grades did not differentiate beef on cooked product tenderness, substantiating that muscle compositional characteristics alone define beef grade advantages.

scholarly journals Effect of Breed and Gender on Meat Quality of M. longissimus thoracis et lumborum Muscle from Crossbred Beef Bulls and Steers

Foods ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 173 ◽  
Author(s):  
Jamie Cafferky ◽  
Ruth M. Hamill ◽  
Paul Allen ◽  
John V. O’Doherty ◽  
Andrew Cromie ◽  
...  
Keyword(s):  
Meat Quality ◽  
Shear Force ◽  
Eating Quality ◽  
Drip Loss ◽  
Quality Traits ◽  
And Gender ◽  
The Relationship ◽  
Sire Breed ◽  
Insight Into

The objective of this study was to determine whether sire breed and/or castration had an effect on meat quality of M. longissimus thoracis et lumborum (LTL) muscle from crossbred bulls and steers and to investigate the relationship amongst the traits examined. Warner–Bratzler shear force (WBSF), intramuscular fat (IMF)%, cook-loss%, drip-loss%, colour (L*, a*, b*) and ultimate pH (upH) were determined in the LTL muscle from eight beef sire breeds representative of the Irish herd (Aberdeen Angus, Belgian Blue, Charolais, Hereford, Limousin, Parthenaise, Salers and Simmental). The results indicate that IMF%, cook-loss% and drip-loss% were associated with breed (p < 0.05); while WBSF, IMF% and cook-loss% differ between genders (p < 0.05). Steer LTL had a greater IMF% and exhibited reduced WBSF and cook-loss% in comparison to the bull LTL (p < 0.05). This study provides greater insight into how quality traits in beef are influenced by breed and gender and will support the industry to produce beef with consistent eating quality.

Variability of the IGF2 locus in the Suino Nero Lucano pig population and its effects on meat quality

2018 ◽  
Vol 58 (11) ◽  
pp. 1976 ◽  
Author(s):  
Amalia Simonetti ◽  
Andrea Rando ◽  
Paola Di Gregorio ◽  
Carmelisa Valluzzi ◽  
Annamaria Perna ◽  
...  
Keyword(s):  
Meat Quality ◽  
Shear Force ◽  
Quality Characteristics ◽  
Porcine Insulin ◽  
Drip Loss ◽  
Fat Percentage ◽  
Promoter Regions ◽  
Igf2 Gene ◽  
Longissimus Lumborum ◽  
L Value

The aim of this study was to analyse the polymorphisms in the two promoter regions, P1 and P2, of the porcine Insulin-like Growth Factor 2 (IGF2) gene and to investigate the effect of IGF2 genotypes on meat quality traits in the Italian autochthonous Suino Nero Lucano pig. Three polymorphic sites were analysed and only two of the eight potential haplotypes were observed in the Suino Nero Lucano pig population: A haplotype (–366A – –225G – –182C), and B haplotype (–366G – –225C – –182T). Muscle mass and meat quality characteristics were analysed in 30 castrated pigs (10 for each of the three IGF2 genotypes: A/A, A/B, and B/B). According to the results, B/B animals, at the same carcass weight, showed the highest Longissimus lumborum and Psoas weight (P < 0.05), whereas A/A animals showed a higher intramuscular fat percentage and lower Warner–Bratzler shear force, drip loss, and polyunsaturated fatty acids content. Meat from B/B animals showed also a higher L* value and myoglobin and deoxymyoglobin percentage compared with meat from A/A ones (P < 0.05).

A comparison of concentrate and silage-based finishing diets on the performance, carcass composition and meat quality of suffolk cross and scottish blackface lambs

1995 ◽  
Vol 1995 ◽  
pp. 90-90
Author(s):  
M. I. Mustafa ◽  
G. M. Webster
Keyword(s):  
Growth Rate ◽  
Growth Performance ◽  
Meat Quality ◽  
Quality Characteristics ◽  
Carcass Composition ◽  
Eating Quality ◽  
Carcass Quality ◽  
Finishing Diets

There is great variation in lamb carcass quality due to there being many breeds and crosses involved in lamb production. Breed of lamb appears to influence the pattern of development of the important carcass components, and thus the carcass quality, when comparison is made at equal weights. Plane of nutrition may also affect the growth rate, carcass composition and eating quality of lambs of the same genotype. It was planned to study the effect of both breed and diet on growth performance, carcass and meat quality characteristics by feeding two different diets to the lambs of two different breeds similarly managed from birth to slaughter.

scholarly journals Meat quality of chicken of different crossings in alternative system

2018 ◽  
Vol 70 (1) ◽  
pp. 254-262
Author(s):  
F.L. Cruz ◽  
A.A. Silva ◽  
I.F.M. Machado ◽  
L.C. Vieira ◽  
C. Esteves ◽  
...  
Keyword(s):  
Weight Loss ◽  
Meat Quality ◽  
New Hampshire ◽  
Physicochemical Parameters ◽  
Shear Force ◽  
Quality Characteristics ◽  
Ether Extract ◽  
Ph Values ◽  
Hue Angle

ABSTRACT The purpose was to evaluate the effects of gender and of different genotypes of chickens on the physicochemical parameters and centesimal composition, related to the quality of meat. The design was completely randomized arranged in 5x2 factorial scheme, five genotypes (Índio Gigante - IG; New Hampshire - NHS; Gigante Negra de Jersey - GNJ; poultry from the crossing between the IG and NHS breeds - IG x NHS; and between the IG and GNJ breeds - IG x GNJ) and two genders, with five repetitions and each one represented by three poultry, totaling 150 animals, slaughtered at 105 days. The parameters evaluated on the breast and thigh were: centesimal composition (moisture, ether extract - EE, protein and ash), ultimate pH, color (L*- luminosity, a*- redness, b* -yellowness, C* - chroma index and h* - hue angle), weight loss by cooking (WLC) and shear force (SF). The IG genotype had the highest average of ultimate pH of the breast (6.03). The NHS and IG x NHS genotypes showed, respectively, higher average of L * (58.93) and a* (1.92) of the breast. The IG, IG x NHS and IG x GNJ showed the highest values of b* of the breast (12.53, 13.37 and 12.69, respectively). The IG poultry showed high average of SF of the breast and thigh (4.79 and 5.01kgf, respectively). The IG x NHS and IG x GNJ genotypes showed the lowest ultimate pH values of the thigh (6.13 and 6.02, respectively). The IG x GNJ genotype showed a high average of b* of the thigh (14.94) and the NHS had a high average of WCL (24.65%). The females showed higher averages of EE on the breast and ash on the thigh (1.03 and 1.11%, respectively). The IG x NHS and IG x GNJ poultry showed higher averages of EE of the breast (1.21 and 1.38 %, respectively). The poultry of IG breed and those from the crossing with NHS and GNJ presented meat quality characteristics more desirable by the consumer in relation to physicochemical parameters and centesimal composition, while genders showed no influence on these aspects.

scholarly journals Carcass and Meat Quality Characteristics of Native Chicken Reared under Backyard and Farm Setting in Karnataka

2021 ◽  
Author(s):  
Anusha Bai ◽  
S. Wilfred Ruban ◽  
P.V. Spandan ◽  
Ahlen IG Barry ◽  
S. Naveen Kumar ◽  
...  
Keyword(s):  
Meat Quality ◽  
Shear Force ◽  
Fibre Diameter ◽  
Live Weight ◽  
Quality Characteristics ◽  
Eating Quality ◽  
Physico Chemical ◽  
Native Chicken ◽  
Significant Difference ◽  
Native Birds

Background: The commercial rearing of native chicken has been gaining importance due to higher demand for natural and organic meat. In this context the present study was designed to compare the carcass and meat quality characteristics of native chicken reared under backyard system as compared to native chicken reared under farm setting in Karnataka.Methods: Sixty (30 backyard and 30 farm reared) native birds were used to evaluate the carcass characteristics viz., dressing per cent, yield of cut up parts and meat bone ratio. Breast muscle was used to evaluate physico-chemical (pH, WHC, colour, drip loss and cooking loss), compositional (proximate composition, cholesterol content and collagen content), structural characteristics (muscle fibre diameter, sarcomere length, shear force) and sensory characteristics.Result: A significant difference (P less than 0.05) in live weight, carcass weight and dressing per centage was evident in backyard native chicken (BNC) and farm reared native chicken with higher weight being recorded in FNC, whereas no significance could be observed in yield of various primal cuts between them. Physico-chemical and compositional characteristics revealed no significant difference, whereas farm reared birds had lower shear force and collagen compared to backyard birds. Sensory evaluation revealed no negative influence on any of the eating quality indicating that commercial rearing of native chicken could be advocated for faster growth of native birds without compromising on the quality of meat.

Relationship between sire estimated breeding values and the meat and eating quality of meat from their progeny grown on two planes of nutrition

2005 ◽  
Vol 45 (5) ◽  
pp. 525 ◽  
Author(s):  
D. L. Hopkins ◽  
R. S. Hegarty ◽  
T. C. Farrell
Keyword(s):  
Meat Quality ◽  
Shear Force ◽  
Best Practice ◽  
Intramuscular Fat ◽  
Eating Quality ◽  
Quality Traits ◽  
Breeding Values ◽  
Meat Quality Traits ◽  
Estimated Breeding Values

The meat of 140 female lambs was examined. These lambs were sired by 9 Poll Dorset sires (3 selected for growth, 3 for muscling and 3 control) and fed either a low or high plane of nutrition from birth to slaughter. All carcasses were electrically stimulated and portions of M. longissimus thoracis et lumborum (loin) aged for 5 days before freezing. Subsequently, 10 consumers tested each portion for eating quality traits. A portion of the same muscle from the opposing side of the carcass was divided into 3 sections and aged for either 1, 3 or 5 days and then used to measure shear force (objective tenderness). Portions of the M. semimembranosus (topside) were also aged for 3 or 5 days and subjected to shear testing. Low plane animals produced tougher loins (based on shear force). As ultimate pH increased, shear force of the loin increased for low plane animals, while for high plane animals there was no such effect. This latter group had significantly lower ultimate pH values in all 3 muscles tested. Plane of nutrition had the greatest effect on topside shear force with low plane lambs producing tougher topsides. As ultimate pH increased, the topsides became tougher and as expected ageing improved the tenderness. There was no effect of sire EBVs (estimated breeding values) on shear force or objective meat quality traits apart from loin lightness which increased as the EBV for post-weaning weight (PWWT) increased and intramuscular fat in the loin which decreased as sire EBV for post-weaning muscle depth (PEMD) increased. Plane of nutrition did not have a significant effect on eating quality attributes as assessed by consumers. There was, however, an effect of sire EBV for muscling (PEMD) on tenderness, juiciness, flavour and overall liking, such that increased EBV led to decreased scores for the sensory traits. The findings suggest selection of sires for increasing PEMD will have a detrimental affect on the eating quality of their progeny, but this will not be reflected in shear force values or other objective meat quality traits apart from intramuscular fat. The effects of a low plane of nutrition on eating quality were minimal and largely controlled by the use of best practice processing, but were evident for a number of meat quality traits.

scholarly journals The effect of DanAvl Duroc and Pulawska boars in crossbred with DanAvl Hybrid on meat quality of finishing pigs

2018 ◽  
Vol 27 (3) ◽  
Author(s):  
Artur Rybarczyk ◽  
Robert Moroch ◽  
Daniel Polasik
Keyword(s):  
Meat Quality ◽  
Total Protein ◽  
Shear Force ◽  
Drip Loss ◽  
Finishing Pigs ◽  
Post Mortem ◽  
Lower Content ◽  
Lower Shear ◽  
Longissimus Lumborum

The research was aimed at determining the physicochemical and sensory properties of the m. longissimus lumborum at DanAvl Hybrid (Landrace – Yorkshire) fatteners and derived from DanAvl Hybrid sows and DanAvl Duroc and Pulawska boars. Fatteners derived from DanAvl Duroc boars were characterized by better meat quality compared to DanAvl Hybrids and their hybrids with Pulawska breed as evidenced by higher pH in 24–96 h post mortem (p.m.), higher sensory evaluation of juiciness, tenderness and flavor as well as lower shear force at lower content of total protein and higher content of intramuscular fat (IMF). However, DanAvl Hybrid fatteners were characterized by poorer meat quality, i.e. higher color lightness (L*) and higher drip loss both from fresh and thawed meat compared to those derived from DanAvl Duroc and Pulawska boars. Meat of fatteners after Pulawska breed was characterized by the highest redness (a*), and that after DanAvl Duroc breed, the lowest yellowness (b*) and saturation (C*).

scholarly journals Quality characteristics, fatty acid profiles, flavor compounds and eating quality of cull sow meat in comparison with commercial pork

2020 ◽  
Vol 33 (4) ◽  
pp. 640-650
Author(s):  
Van Ba Hoa ◽  
Soo-Hyun Cho ◽  
Pil-Nam Seong ◽  
Sun- Moon Kang ◽  
Yun-Seok Kim ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Meat Quality ◽  
Scientific Information ◽  
Quality Characteristics ◽  
Cooking Loss ◽  
Flavor Compounds ◽  
Eating Quality ◽  
Technological Quality ◽  
Water Holding

Objective: Although the slaughter of cull sows (CS) for human consumption and meat products processing appears quite common throughout the world, relatively limited scientific information regarding the meat quality parameters of this pork type is available. The present study aimed at providing the technological quality characteristics and eating quality of CS meat, and comparing with those of commercial pork.Methods: <i>Longissimus thoracis et lumborum</i> muscle samples of CS and finisher pigs (FP) at 24 h <i>postmortem</i> were collected and used for investigation of the meat quality traits (pH, color, shear force, cooking loss, water holding capacity), fatty acids, flavor compounds and sensory characteristics.Results: The CS meat had significantly higher moisture content (p = 0.0312) and water holding capacity (p = 0.0213) together with lower cooking loss (p = 0.0366) compared to the FP meat. The CS meat also exhibited higher (p = 0.0409) contents of unsaturated fatty acids, especially polyunsaturated fatty acids (PUFA, p = 0.0213) and more desirable PUFA/total saturated fatty acids ratio (p = 0.0438) compared to the FP meat. A total of 56 flavor compounds were identified, amongst the amount of 16 compounds differed significantly between the two pork groups. Most of the PUFA-derived flavor compounds (e.g., hexanal, benzaldehyde, and hydrocarbons) showed higher amounts in the CS meat. While, 3-(methylthio)-propanal and 4-methylthiazole associated with pleasant aromas (meaty and roast odor notes) were only found in the FP meat. Furthermore, no differences were reported by panelists for flavor, juiciness, tenderness, and acceptability scores between the two pork groups studied.Conclusion: The sow meat exhibited better technological quality and its eating quality could be comparable to the commercial pork. This study provides meat processors and traders with valuably scientific information which may help to improve the utilization and consumption level of sow meat.

The influence of chilling rate and fat cover on beef quality

2001 ◽  
Vol 81 (3) ◽  
pp. 321-330 ◽  
Author(s):  
J. L. Aalhus ◽  
J. A. M. Janz ◽  
A. K. W. Tong ◽  
S. D. M. Jones ◽  
W. M. Robertson
Keyword(s):  
Electrical Stimulation ◽  
Meat Quality ◽  
Shear Force ◽  
Backfat Thickness ◽  
Meat Tenderness ◽  
Beef Quality ◽  
Wide Range ◽  
Average Shear ◽  
Longissimus Lumborum

The economic advantages of rapid carcass chilling include reduced cooling time, increased carcass processing rate, and decreased shrink and drip losses; however, it may also reduce subsequent meat tenderness, especially in lean carcasses. The present study examined the effects of blast chilling and electrical stimulation on quality of longissimus lumborum (LL) and semimembranosus muscles from carcasses with a wide range in backfat thickness (0 to 69 mm). Despite promoting a wide range in postmortem pH and temperature decline, backfat thickness had a limited effect on meat quality. There was a decrease in the proportion of carcasses with very high (>35 N cm–2) shear values and a tendency (P = 0.12) for the average shear force to decrease in the LL as backfat depth increased. Unexpectedly, leaner carcasses had less shrink loss than fatter carcasses under blast chill conditions. While blast chilling resulted in slightly darker, tougher meat, electrical stimulation was able to reduce these effects. Neither early postmortem pH nor temperature at 10 h was clearly associated with a pattern in shear force, although high pH10 was associated with tough steaks. Blast chilling in combination with electrical stimulation can be recommended to industry as a means to reduce chilling times and shrink losses while producing meat quality that is as good as, or slightly superior to conventionally cooled carcasses. Key words: Beef quality, blast chilling, electrical stimulation, fat thickness

scholarly journals Frozen/thawed meat quality associated with muscle fiber characteristics of porcine longissimus thoracis et lumborum, psoas major, semimembranosus, and semitendinosus muscles

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Huilin Cheng ◽  
Sumin Song ◽  
Gap-Don Kim
Keyword(s):  
Meat Quality ◽  
Muscle Fiber ◽  
Shear Force ◽  
Muscle Fibers ◽  
Frozen Storage ◽  
Meat Color ◽  
Pork Meat ◽  
Psoas Major ◽  
The Relationship

AbstractTo evaluate the relationship between muscle fiber characteristics and the quality of frozen/thawed pork meat, four different muscles, M. longissimus thoracis et lumborum (LTL), M. psoas major (PM), M. semimembranosus (SM), and M. semitendinosus (ST), were analyzed from twenty carcasses. Meat color values (lightness, redness, yellowness, chroma, and hue) changed due to freezing/thawing in LTL, which showed larger IIAX, IIX, and IIXB fibers than found in SM (P < 0.05). SM and ST showed a significant decrease in purge loss and an increase in shear force caused by freezing/thawing (P < 0.05). Compared with LTL, SM contains more type IIXB muscle fibers and ST had larger muscle fibers I and IIA (P < 0.05). PM was the most stable of all muscles, since only its yellowness and chroma were affected by freezing/thawing (P < 0.05). These results suggest that pork muscle fiber characteristics of individual cuts must be considered to avoid quality deterioration during frozen storage.

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