scholarly journals Identification of Candidate Genes and Regulatory Factors Underlying Intramuscular Fat Content Through Longissimus Dorsi Transcriptome Analyses in Heavy Iberian Pigs

2018 ◽  
Vol 9 ◽  
Author(s):  
María Muñoz ◽  
Juan María García-Casco ◽  
Carmen Caraballo ◽  
Miguel Ángel Fernández-Barroso ◽  
Fernando Sánchez-Esquiliche ◽  
...  
Keyword(s):  
Candidate Genes ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Longissimus Dorsi ◽  
Regulatory Factors ◽  
Transcriptome Analyses ◽  
Intramuscular Fat Content

scholarly journals Data from proteomic analysis of bovine Longissimus dorsi muscle associated with intramuscular fat content

Data in Brief ◽  
2018 ◽  
Vol 19 ◽  
pp. 1314-1317 ◽  
Author(s):  
Mirele D. Poleti ◽  
Luciana C.A. Regitano ◽  
Gustavo H.M.F. Souza ◽  
Aline S.M. Cesar ◽  
Rosineide C. Simas ◽  
...  
Keyword(s):  
Proteomic Analysis ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Longissimus Dorsi ◽  
Longissimus Dorsi Muscle ◽  
Dorsi Muscle ◽  
Intramuscular Fat Content

scholarly journals Dietary calcium supplementation promotes the accumulation of intramuscular fat

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Zhiwang Zhang ◽  
Tingli Pan ◽  
Yu Sun ◽  
Siqi Liu ◽  
Ziyi Song ◽  
...  
Keyword(s):  
Meat Quality ◽  
Calcium Supplementation ◽  
Intramuscular Fat ◽  
Dietary Calcium ◽  
Fat Content ◽  
C2c12 Cells ◽  
Longissimus Dorsi ◽  
Fat Accumulation ◽  
Calcium Addition ◽  
Intramuscular Fat Content

Abstract Background In the livestock industry, intramuscular fat content is a key factor affecting meat quality. Many studies have shown that dietary calcium supplementation is closely related to lipid metabolism. However, few studies have examined the relationship between dietary calcium supplementation and intramuscular fat accumulation. Methods Here, we used C2C12 cells, C57BL/6 mice (n = 8) and three-way cross-breeding pigs (Duroc×Landrace×Large white) (n = 10) to study the effect of calcium addition on intramuscular fat accumulation. In vitro, we used calcium chloride to adjust the calcium levels in the medium (2 mmol/L or 3 mmol/L). Then we measured various indicators. In vivo, calcium carbonate was used to regulate calcium levels in feeds (Mice: 0.5% calcium or 1.2% calcium) (Pigs: 0.9% calcium or 1.5% calcium). Then we tested the mice gastrocnemius muscle triglyceride content, pig longissimus dorsi muscle meat quality and lipidomics. Results In vitro, calcium addition (3 mmol/L) had no significant effect on cell proliferation, but promoted the differentiation of C2C12 cells into slow-twitch fibers. Calcium supplementation increased triglyceride accumulation in C2C12 cells. Calcium addition increased the number of mitochondria and also increased the calcium level in the mitochondria and reduced the of key enzymes activity involved in β-oxidation such as acyl-coenzyme A dehydrogenase. Decreasing mitochondrial calcium level can alleviate lipid accumulation induced by calcium addition. In addition, calcium addition also reduced the glycolytic capacity and glycolytic conversion rate of C2C12 cells. In vivo, dietary calcium supplementation (1.2%) promoted the accumulation of triglycerides in the gastrocnemius muscle of mice. Dietary calcium supplementation (1.5%) had no effect on pig weight, but significantly improved the flesh color of the longissimus dorsi muscle, reduced the backfat thickness and increased intramuscular fat content in pigs. Besides, calcium addition had no effect on longissimus dorsi pH, electrical conductivity and shear force. Conclusions These results suggest that calcium addition promotes intramuscular fat accumulation by inhibiting the oxidation of fatty acids. These findings provide a new tool for increasing intramuscular fat content and an economical strategy for improving meat quality.

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 Gene expression profile of Musculus longissimus dorsi in bulls of a Charolais × Holstein F 2 -cross with divergent intramuscular fat content

Genomics Data ◽  
2016 ◽  
Vol 7 ◽  
pp. 131-133 ◽  
Author(s):  
Katrin Komolka ◽  
Siriluck Ponsuksili ◽  
Elke Albrecht ◽  
Christa Kühn ◽  
Klaus Wimmers ◽  
...  
Keyword(s):  
Gene Expression ◽  
Gene Expression Profile ◽  
Expression Profile ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Longissimus Dorsi ◽  
Intramuscular Fat Content
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