scholarly journals The effect of sex and slaughter weight on intramuscular fat content and its relationship to carcass traits of pigs

2008 ◽  
Vol 52 (No. 5) ◽  
pp. 122-129 ◽  
Author(s):  
I. Bahelka ◽  
E. Hanusová ◽  
D. Peškovičová ◽  
P. Demo
Keyword(s):  
Slovak Republic ◽  
Carcass Traits ◽  
Correlation Coefficients ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Backfat Thickness ◽  
Slaughter Weight ◽  
Selection Strategies ◽  
Almost All ◽  
Intramuscular Fat Content

Carcass quality and intramuscular fat content of castrates and gilts are compared and a possible dependence of intramuscular fat content on sex and slaughter weight is determined in the pig population of the Slovak Republic. A total of 129 pigs of three different genotypes were included in the experiment. After slaughter, the carcasses were weighed and backfat thickness was measured. On the next day, carcass dissection described by Walstra and Merkus (1995) was determined. Four prime cuts (shoulder, loin, ham and belly) were further dissected to meat, bones and fat with skin. Intramuscular fat content was analysed in a laboratory from the samples (100 g) of <i>musculus longissimus dorsi</i>. The results were statistically analysed using SAS/STAT and a linear model was used to find the dependence of intramuscular fat content. Correlation coefficients between carcass traits and intramuscular fat were also calculated. Sex of pigs, and particularly weight of lean meat and weight of fatty parts had a significant effect on intramuscular fat content (<i>P</i> < 0.0001 and <i>P</i> = 0.0022) while no effect of the genotype and slaughter weight was observed. Significant differences between castrates and gilts were found in almost all observed traits, e.g. average backfat thickness (29.01 vs. 25.56 mm), percentage of meat (52.77 vs. 57.68%), intramuscular fat content (2.49 vs. 2.00%). Generally, the intramuscular fat in the pig population is not sufficient (2.25%), therefore it would be desirable to include this trait in selection strategies in pig breeding.

scholarly journals Association of Twelve Candidate Gene Polymorphisms with the Intramuscular Fat Content and Average Backfat Thickness of Chinese Suhuai Pigs

Animals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 858 ◽  
Author(s):  
Wang ◽  
Li ◽  
Zhou ◽  
Gao ◽  
Liu ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Gene Polymorphisms ◽  
Genetic Correlations ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Backfat Thickness ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Coefficients Of Variation ◽  
Intramuscular Fat Content

The present study aimed to identify the molecular markers for genes that influence intramuscular fat content (IFC), but not average backfat thickness (ABT). A total of 330 Suhuai pigs were slaughtered, and measurements of IFC and ABT were obtained. Phenotypic and genetic correlations between IFC and ABT were calculated. Thirteen single nucleotide polymorphisms (SNPs) among 12 candidate genes for IFC were analyzed, including FABP3, LIPE, IGF1, IGF2, LEP, LEPR, MC4R, PHKG1, RETN, RYR1, SCD, and UBE3C. Associations of the evaluated SNPs with IFCIFC and ABT were performed. Our results showed that the means of IFC and ABT were 1.99 ± 0.03 % and 26.68 ± 0.28 mm, respectively. The coefficients of variation (CVs) of IFC and ABT were 31.21% and 19.36%, respectively. The phenotypic and genetic correlations between IFC and ABT were moderate. Only the FABP3 (rs1110770079) was associated with IFC (p < 0.05) but not with ABT. Besides, there was a tendency for associations of RYR1 (rs344435545) and SCD (rs80912566) with IFC (p < 0.1). Our results indicated that the FABP3 (rs1110770079) SNP could be used as a marker to improve IFC without changing ABT in the Suhuai pig breeding system.

The X Chromosome harbors quantitative trait loci for backfat thickness and intramuscular fat content in pigs

2000 ◽  
Vol 11 (9) ◽  
pp. 800-802 ◽  
Author(s):  
Barbara Harlizius ◽  
Annemieke P. Rattink ◽  
Dirk J. de Koning ◽  
Marilyne Faivre ◽  
Ruth G. Joosten ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
X Chromosome ◽  
Quantitative Trait ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Backfat Thickness ◽  
Trait Loci ◽  
Intramuscular Fat Content

The influence of breed and type of feed on the cholesterol content of the M. longissimus dorsi of steers

1990 ◽  
Vol 30 (6) ◽  
pp. 797 ◽  
Author(s):  
DG Taylor ◽  
LW Smith
Keyword(s):  
Correlation Coefficients ◽  
Cholesterol Content ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Longissimus Dorsi ◽  
Fat Thickness ◽  
Intramuscular Fat Content

The cholesterol content of muscle from pasture-fed Hereford (n = 21) and Brahman (n = 12) steers, and from grain-fed Hereford (n = 20) steers was determined. No significant differences (P>0.05) were detected in the cholesterol content of muscle between breeds or between types of feed. Small, non-significant correlation coefficients were detected between cholesterol content of muscle and carcass fat thickness, while the association between cholesterol content of muscle and intramuscular fat content was stronger but only significant (P<0.05) for the Brahman group. Thus, breed, feed type and possibly carcass fatness were not variables that could be used to reduce the cholesterol content of muscle.

scholarly journals Body fat content, composition and distribution in Landrace and Iberian finishing pigs given ad libitum maize- and acorn-sorghum-maize-based diets

2003 ◽  
Vol 77 (2) ◽  
pp. 215-224 ◽  
Author(s):  
J. Morales ◽  
M.D. Baucells ◽  
J.F. Pérez ◽  
J. Mourot ◽  
J. Gasa
Keyword(s):  
Food Intake ◽  
Body Fat ◽  
Live Weight ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Backfat Thickness ◽  
Lipogenic Enzyme ◽  
Body Fat Content ◽  
Fat Composition ◽  
Intramuscular Fat Content

AbstractWe aimed to determine whether the dietary carbohydrate source altered body fat composition and distribution in finishing lean (Landrace) and obese (Iberian) swine. To this end, twenty-four finishing castrated male pigs (12 Iberian and 12 Landrace; 108 kg live weight) were offered two diets differing in the main carbohydrates source, maize (diet M) or acorn-sorghum-maize (diet A). Diets were formulated to have the same nutrient content, except for carbohydrate fractions: diet M contained higher amount of starch (537 v. 389 g/kg) but less non-starch polysaccharides (118 v. 148 g/ kg) than diet A. At an average weight of 133 kg live weight pigs were slaughtered and their carcasses were sampled to study lipogenesis, backfat and intramuscular fat composition. Iberian pigs showed a higher voluntary food intake than Landrace pigs (3·6 v. 2·4 kg/day; P < 0·001) but no significant differences in the daily weight gain. Diet M tended to promote the highest food intake (P = 0·09). Iberian pigs showed higher (P < 0·01) lipogenic enzyme activities, backfat thickness (71·7 v. 31·9 mm) and intramuscular fat content (40 to 95 g/kg fresh muscle) than Landrace pigs, which was associated with their higher food intake. Furthermore, fat depots from Iberian pigs had higher (P < 0·001) monounsaturated fatty acids (MUFA) and lower (P < 0·05) polyunsaturated (PUFA) proportions than those from Landrace pigs. The backfat thickness of pigs given diet M tended to be higher (P = 0·07) than that of pigs given diet A, without differences in the intramuscular fat content. The higher backfat thickness found for diet M was correlated with a lower PUFA proportion in diet than for diet A (P < 0·001). We conclude that body fat content, composition and lipogenic enzyme activities are markedly influenced by the animal breed and to a lesser extent by dietary characteristics.

The effect of arginine on the Wnt/β-catenin signaling pathway during porcine intramuscular preadipocyte differentiation

2017 ◽  
Vol 8 (1) ◽  
pp. 381-386 ◽  
Author(s):  
Xiaoling Chen ◽  
Yanliu Luo ◽  
Gang Jia ◽  
Guangmang Liu ◽  
Hua Zhao ◽  
...  
Keyword(s):  
Signaling Pathway ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Backfat Thickness ◽  
Finishing Pigs ◽  
Preadipocyte Differentiation ◽  
Underlying Mechanisms ◽  
Intramuscular Fat Content ◽  
Arginine Supplementation

Dietaryl-arginine supplementation decreases backfat thickness and increases intramuscular fat content in growing-finishing pigs, but the underlying mechanisms are unknown.

scholarly journals Response to selection for decreased backfat thickness at restrained intramuscular fat content in Duroc pigs1

2013 ◽  
Vol 91 (8) ◽  
pp. 3514-3521 ◽  
Author(s):  
R. Ros-Freixedes ◽  
J. Reixach ◽  
L. Bosch ◽  
M. Tor ◽  
J. Estany
Keyword(s):  
Intramuscular Fat ◽  
Fat Content ◽  
Backfat Thickness ◽  
Response To Selection ◽  
Selection For ◽  
Intramuscular Fat Content
Sign in / Sign up

Export Citation Format

Share Document