Influence of Slaughter Weight, Sex and Intramuscular Fat Content of the MLLT on the Carcass Value of Hybrid Pigs

2020 ◽  
Author(s):  
L. Sládek
Keyword(s):  
Intramuscular Fat ◽  
Large White ◽  
Lean Meat ◽  
Slaughter Weight ◽  
Meat Content ◽  
Longissimus Lumborum ◽  
The Impact ◽  
Imf Content ◽  
Intramuscular Fat Content ◽  
The Imf

The aim of this study was to establish the impact of slaughter weight, sex and the intramuscular fat (IMF) content of the musculus longissimus lumborum et thoracis (MLLT) on the carcass value of (Czech Large White x Czech Landrace) x Duroc hybrid pigs. The average lean meat content was higher in gilts (56.51 %) than in barrows (55.89 %). Average IMF content was recorded as 3.76 % in barrows and 3.42 % in gilts. The slaughter weight of the pigs did have an impact on the IMF content of the MLLT. The higher average slaughter weight (121.61 kg or 120.68 kg) of pigs intended for slaughter was established in pigs with a higher average IMF content (3.52 % or 5.20 %). Neither sex nor slaughter weight affected the monitored indicators of meat colour. The IMF content of the MLLT had no significant impact on carcass value indicators.

A comparison of female and castrate pigs slaughtered at weights above and below 120 kg on carcass traits, intramuscular fat and fatty acid composition of carcasses intended for dry-cured ham and shoulder production

2019 ◽  
Vol 59 (10) ◽  
pp. 1923 ◽  
Author(s):  
M. A. Latorre ◽  
A. Olivares ◽  
A. Callejo ◽  
A. I. Rey ◽  
L. Pérez-Ciria ◽  
...  
Keyword(s):  
Weight Ratio ◽  
Intramuscular Fat ◽  
Allometric Growth ◽  
Large White ◽  
Growth Coefficient ◽  
Dry Cured Ham ◽  
Fat Composition ◽  
Fat Thickness ◽  
The Impact ◽  
Intramuscular Fat Content

The objective of this trial was to study the impact of slaughter weight (SW) class: heavy (≥120 kg) or light (<120 kg) on carcass fatness, development of main lean cuts and fat composition in barrows and gilts intended for dry-cured ham and shoulder elaboration. A total of 181 Duroc × (Landrace × Large White) pigs was used, being 94 barrows and 87 gilts. Carcasses from barrows had lower ham compactness but higher shoulder:ham weight ratio than those from gilts. The allometric growth coefficient of ham was higher in gilts whereas those for shoulder, loin and shoulder/ham were higher in barrows. An interaction sex × SW class was found for carcass fatness; the increase of fat thickness was higher in barrows than in gilts in light SW class but higher in gilts than in barrows in heavy SW class. In addition, the allometric growth coefficients for ham, loin and shoulder:ham ratio were higher in light than in heavy pigs. Percentage of rejected carcasses at slaughterhouse, due to lack of fat thickness, was higher for females than for barrows and for light than for heavy pigs. Sex and SW class had no effect on intramuscular fat content. However, more saturation was found in fat (intramuscular) from barrows and in that (subcutaneous) from light pigs. It can be concluded that carcasses from barrows are commercially more suitable than those from gilts and heavy SW might be more interesting when animals are intended for Teruel dry-cured ham and shoulder production.

scholarly journals The Effect of Genotype, Sex and Intramuscular Fat Content on the Colour of Pork

2020 ◽  
Vol 68 (1) ◽  
pp. 101-108
Author(s):  
Libor Sládek ◽  
Eliška Dračková
Keyword(s):  
Intramuscular Fat ◽  
Average Value ◽  
Longissimus Lumborum ◽  
Colour Parameters ◽  
L Value ◽  
Meat Colour ◽  
Colour Saturation ◽  
Imf Content ◽  
Two Hybrid ◽  
Intramuscular Fat Content

The goal of this experiment was to establish the effect of genotype, sex and intramuscular fat (IMF) content in the musculus longissimus lumborum et thoracis (MLLT) on the colour of pork. The values of meat colour parameters were balanced in both gilts and barrows without significant differences (p < 0.05). The average value of the lightness parameter L* was 61.35 ± 5.31 in barrows in our research and 60.14 ± 4.94 in gilts. The percentage of yellow spectrum b* ranged within a narrow zone of from 13.67 ± 2.14 (gilts) to 13.88 ± 2.02 (barrows). The colour saturation value (C*) for meat from barrows (14.42 ± 2,33) differed by just 0.21 from the meat from gilts (14.21 ± 2.51). The lightest meat with the highest L* value, was from pigs to be slaughtered with the highest IMF content (5.00 to 9.50%) 62.53 ± 4.26, or the group with a IMF content of 3.00 to 3.99% (62.12 ± 4.96). The lightness value was lowest (58.73 ± 5.43) in the group with the lowest IMF content (1.85 to 2.99%). To establish the effect of genotype on the colour of pork two hybrid combinations were monitored: (CLW × CL) × D and (CLW × CL) × (D × BL). Different paternal lines in the groups did not affect any of the meat colour indicators significantly.

scholarly journals Effect of Birth Weight of Piglets on Their Growth Ability, Carcass Traits and Meat Quality

2017 ◽  
Vol 65 (1) ◽  
pp. 119-123 ◽  
Author(s):  
Pavel Nevrkla ◽  
Eva Václavková ◽  
Zdeněk Hadaš ◽  
Vendula Kamanová
Keyword(s):  
Weight Gain ◽  
Birth Weight ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Group Iv ◽  
Daily Weight Gain ◽  
Drip Loss ◽  
Lean Meat ◽  
Slaughter Weight ◽  
Intramuscular Fat Content

The objective of this study was to investigate the effect of birth weight on growth performance and carcass quality. Data were collected from 80 crossbred piglets. Individual body weight was measured at birth, at the age of 21, 28 and 38 days, 4 weeks before slaughter, 2 weeks before slaughter and one day before slaughter. Average daily weight gains in separate intervals were calculated. Fattening period was finished at the same day for all pigs. Lean meat percentage and pH1 value were measured after slaughter, drip loss and intramuscular fat content were analysed in laboratory. Data were divided into 4 groups according to the birth weight of piglets (I: less than 1000 g, II: 1001 – 1200 g, III: 1201 – 1500 g, IV: 1501 g and more). Increased birth weight resulted in increased daily weight gain from birth to weaning (28 days), after weaning and also from birth to slaughter (P ≤ 0.05, P ≤ 0.01). The high daily weight gain in group IV enabled pigs to reach the slaughter weight one month earlier than pigs from group II. The lowest lean meat content (52.74 ± 2.82 %) was found in group IV. This is connected with high slaughter weight (132.50 ± 7.27 kg). Intramuscular fat content, pH1 value and drip loss were not affected by birth weight of piglets.

scholarly journals Variability in the leptin, leptin receptor and heart fatty acid binding protein genes in relationship with meat quality traits in pigs

2005 ◽  
Vol 53 (4) ◽  
pp. 87-94
Author(s):  
Renata Mikolášová ◽  
Tomáš Urban
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Binding Protein ◽  
Leptin Receptor ◽  
Binding Protein ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Large White ◽  
Fatty Acid Binding ◽  
Acid Binding Protein ◽  
Intramuscular Fat Content

The leptin (LEP-HinfI), leptin receptor (LEPR-HpaII) and heart fatty acid binding protein (H-FABP-HinfI) genes and their genotypes combination (LEP-HinfI *LEPR-HpaII) were tested for associations with the pH1, pH24, myoglobin content (mg/100 g), intramuscular fat content (%) and remission (%). The genotypes were determined in Large White, Landrace and Duroc breeds (n = 106, 56 and 4, respectively). The allele frequencies were: LEP-HinfI: C = 0.133 T = 0.867; LEPR-HpaII: A = 0.331 B = 0.669; H-FABP-HinfI: H = 0.745 h = 0.255. The populations of breeds were in the genetic equilibrium according to the χ2 test in the tested loci. The combinations of LEP-HinfI and LEPR-HpaII were significantly associated with the pH24 and remission. The H-FABP-HinfI locus was significantly associated with intramuscular fat content.

scholarly journals Muscle transcriptome analysis identifies genes involved in ciliogenesis and the molecular cascade associated with intramuscular fat content in Large White heavy pigs

PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0233372 ◽  
Author(s):  
Martina Zappaterra ◽  
Silvia Gioiosa ◽  
Giovanni Chillemi ◽  
Paolo Zambonelli ◽  
Roberta Davoli
Keyword(s):  
Transcriptome Analysis ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Large White ◽  
Intramuscular Fat Content

scholarly journals The visfatin (NAMPT; PBEF1) gene polymorphisms and associations with meat performance traits in three pig breeds kept in the Czech Republic

2009 ◽  
Vol 54 (No. 10) ◽  
pp. 443-447 ◽  
Author(s):  
J. Zrůstová ◽  
A. Knoll ◽  
T. Urban ◽  
S. Čepica
Keyword(s):  
Average Daily Gain ◽  
Backfat Thickness ◽  
Large White ◽  
Nicotinamide Phosphoribosyltransferase ◽  
The Czech Republic ◽  
Lean Meat ◽  
Meat Content ◽  
The Difference ◽  
Daily Gain

Visfatin encoded by the <I>NAMPT</I> gene <I>(nicotinamide phosphoribosyltransferase,</I> formerly also known as <I>PBEF – pre-B cell colony-enhancing factor</I>) is suggested to play a role in lipid metabolism and pathophysiology of diabetes mellitus type 2. A new microsatellite <I>SCZ004</I> was detected within intron 9 of the <I>NAMPT</I> gene. In Czech Large White (<I>n</I> = 95) frequencies of alleles <I>282, 286, 287, 299</I>, and <I>304</I> were 0.02, 0.39, 0.07, 0.04, and 0.48, respectively. Allele <I>286</I> was predominant also in Landrace (<I>n</I> = 11) and Black Pied Prestice (<I>n</I> = 11) breeds. Association analysis was carried out between previously reported SNP AM999341:g.669T>C in intron 9 of the <I>NAMPT</I> gene and backfat thickness, average daily gain and lean meat content in Czech Large White (<I>n</I> = 215), Black Pied Prestice (<I>n</I> = 96) and Landrace (<I>n</I> = 105). The <I>CC</I> genotype was associated with higher backfat thickness (<I ≤ 0.01) in Black Pied Prestice, however in Czech Large White <I>CC</I> was associated with lower backfat thickness when compared to <I>TT</I> and <I>CT</I> genotypes (<I ≤ 0.05). In Czech Large White, <I>CC</I> genotype was associated with higher lean meat content when compared to <I>CT</I> (not significant) and <I>TT</I> genotype (<I ≤ 0.05) while in Landrace <I>CC</I> had the lowest lean meat content when compared to <I>CT</I> and <I>TT</I> genotypes but only the difference between <I>CC</I> and <I>CT</I>T was statistically significant (<I ≤ 0.05). In Black Pied Prestice no association with lean meat content was found. Average daily gain was not associated with the SNP in any breed.

scholarly journals Transcriptome shifts triggered by vitamin A and SCD genotype interaction in Duroc pigs

BMC Genomics ◽  
2022 ◽  
Vol 23 (1) ◽  
Author(s):  
Emma Solé ◽  
Rayner González-Prendes ◽  
Yelyzaveta Oliinychenko ◽  
Marc Tor ◽  
Roger Ros-Freixedes ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Vitamin A ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Dietary Vitamin ◽  
Wide Range ◽  
Fattening Period ◽  
The Impact ◽  
Intramuscular Fat Content

Abstract Background The composition of intramuscular fat depends on genetic and environmental factors, including the diet. In pigs, we identified a haplotype of three SNP mutations in the stearoyl-coA desaturase (SCD) gene promoter associated with higher content of monounsaturated fatty acids in intramuscular fat. The second of these three SNPs (rs80912566, C > T) affected a putative retinol response element in the SCD promoter. The effect of dietary vitamin A restriction over intramuscular fat content is controversial as it depends on the pig genetic line and the duration of the restriction. This study aims to investigate changes in the muscle transcriptome in SCD rs80912566 TT and CC pigs fed with and without a vitamin A supplement during the fattening period. Results Vitamin A did not affect carcass traits or intramuscular fat content and fatty acid composition, but we observed an interaction between vitamin A and SCD genotype on the desaturation of fatty acids in muscle. As reported before, the SCD-TT pigs had more monounsaturated fat than the SCD-CC animals. The diet lacking the vitamin A supplement enlarged fatty acid compositional differences between SCD genotypes, partly because vitamin A had a bigger effect on fatty acid desaturation in SCD-CC pigs (positive) than in SCD-TT and SCD-TC animals (negative). The interaction between diet and genotype was also evident at the transcriptome level; the highest number of differentially expressed genes were detected between SCD-TT pigs fed with the two diets. The genes modulated by the diet with the vitamin A supplement belonged to metabolic and signalling pathways related to immunity and inflammation, transport through membrane-bounded vesicles, fat metabolism and transport, reflecting the impact of retinol on a wide range of metabolic processes. Conclusions Restricting dietary vitamin A during the fattening period did not improve intramuscular fat content despite relevant changes in muscle gene expression, both in coding and non-coding genes. Vitamin A activated general pathways of retinol response in a SCD genotype-dependant manner, which affected the monounsaturated fatty acid content, particularly in SCD-CC pigs.

scholarly journals Meat quality of Limousin young bulls slaughtered at 6, 9 and 12 months of age

2017 ◽  
pp. 792 ◽  
Author(s):  
Grażyna Czyżak- Runowska ◽  
Bożena Grześ ◽  
Edward Pospiech ◽  
Jolanta Komisarek ◽  
Monika Okulicz ◽  
...  
Keyword(s):  
Shear Force ◽  
Glycogen Content ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Post Mortem ◽  
Potential Value ◽  
Glycolytic Potential ◽  
Longissimus Lumborum ◽  
Intramuscular Fat Content

The aim of this study was to compare the quality of meat of the young Limousin bulls slaughtered at the age of 6, 9 and 12 months, with particular regard to the residual glycogen content in the meat and the value of the glycolytic potential. The study was conducted on bovine longissimus lumborum muscle. The residual glycogen content, glycolytic potential value (96 h post-mortem), pH value (45 min, 24 h, 48 h and 96 h post-mortem), IMP/ATP index (45 min post-mortem), colour parameters (L*, a* and b*), natural and cooking losses, free water content, the chemical composition, sensory parameters (aroma, flavour, juiciness and tenderness) as well as instrumental tenderness based on cutting test (96 h post-mortem) were analysed. The slaughter age of bulls had significant (p<0.05) effect on following meat parameters: concentration of glycogen, glycolytic potential value, lightness (L*) and redness (a*), shear force value, intramuscular fat content and sensory evaluation of aroma, flavour, juiciness and tenderness.  The longissimus lumborum muscle from young bulls slaughtered at the age of 6 months had significantly (p<0.05) lower values for glycogen concentration, glycolytic potential and intramuscular fat content when compared to animals slaughtered at the age of 12 months. Moreover, the colour of the examined muscle from the youngest bulls was characterised by the highest L* value and the lowest a* value as well as the lowest shear force value when compared to the meat of older bulls slaughtered at the age of 9 and 12 months.

scholarly journals Effect of weight and sex on intramuscular fat amounts in relation to the formation of selected carcass cuts in pigs

2008 ◽  
Vol 53 (No. 12) ◽  
pp. 506-514 ◽  
Author(s):  
R. Stupka ◽  
J. Čítek ◽  
M. Šprysl ◽  
M. Okrouhlá ◽  
D. Kureš ◽  
...  
Keyword(s):  
Live Weight ◽  
Intramuscular Fat ◽  
Average Weight ◽  
Moderate Increase ◽  
The Czech Republic ◽  
The Difference ◽  
Imf Content ◽  
Intramuscular Fat Content ◽  
Group 1 ◽  
Carcass Cuts

The objective of this study was to examine the influence of weight and sex on fat amounts in relation to the formation of selected carcass cuts in final hybrid pigs commonly kept in the Czech Republic. During the experiment 123 hybrid pigs of various genotypes were tested. The pigs were slaughtered at an average weight of 120.4 kg and dissected in detail. The tested pigs were divided into 5 weight categories, while the tissue composition of ham, joint, shoulder and neck was monitored with emphasis on the assessment of IMF content. A decrease in the lean meat proportion was shown, as well as an increasing fat proportion with increasing weight: for the joint the difference was 4.19%, for the ham 3.9%, shoulder 3.0%, and neck 2.31%. With increasing weight, a moderate increase in intramuscular fat occurred, whereas the differences between group 1 and 5 were: 1.68% for the ham, 0.58% (shoulder), 0.4% (joint) and 0.37% (neck). Concerning the influence of sex, barrows had statistically insignificant intramuscular fat content compared with gilts (excluding the neck). As for the protein content in the monitored carcass cuts, no influence of live weight and sex was recorded.

scholarly journals Haplotype analysis within quantitative trait locus affecting intramuscular fat content on porcine chromosome

2011 ◽  
Vol 56 (No. 12) ◽  
pp. 521-528
Author(s):  
S. Sato ◽  
C. Ohnishi ◽  
Y. Uemoto ◽  
E. Kobayashi
Keyword(s):  
Quantitative Trait ◽  
Haplotype Analysis ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Porcine Chromosome ◽  
Large White ◽  
Positional Candidate ◽  
Synonymous Substitutions ◽  
Trait Locus ◽  
Intramuscular Fat Content

Previous results of fine mapping for quantitative trait loci affecting intramuscular fat content identified a 3.0-Mb chromosome interval on porcine chromosome 7, which contains at least 9 genes, based on the pig genome assembly. Therefore, we proposed these nine genes (LOC100154481, LOC100155711, LOC100155276, SPATA7, PTPN21, ZCH14, EML5, TTC8, and FOXN3) as positional candidate genes. The coding exons of the nine genes were characterized, and 45 polymorphisms were detected in F<sub>2</sub> Duroc &times; Meishan population. Within the nine genes, 10 non-synonymous substitutions and 1 insertion were genotyped among three European breeds (Landrace, Large White, and Duroc) and 1 Chinese breed (Meishan). Genotyping data was used to perform the haplotype analysis. Polymorphisms were found in all the studied genes, except ZCH14. We surveyed the frequency of 33 haplotypes that formed non-synonymous substitutions in four breeds. One of them was distributed widely in the Landrace, Large White, and Meishan breeds, but not in Duroc. Each breed had different major haplotypes. &nbsp;

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