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Fatty acid profiles and adipogenic gene expression of various fat depots in Japanese Black and Holstein steers.
- Source :
-
Meat science [Meat Sci] 2014 Jan; Vol. 96 (1), pp. 157-64. Date of Electronic Publication: 2013 Jun 27. - Publication Year :
- 2014
-
Abstract
- Objective of the study was to assess the breed effect on fatty acid (FA) composition of different adipose tissues and on mRNA expression of genes involved in adipogenesis and fat metabolism. Japanese Black (JB) and Holstein (HS) steers were kept under equivalent conditions with high energy intake resulting in large differences in intramuscular fat (IMF) accumulation in longissimus muscle (LM). The relative FA composition of muscle, intermuscular fat, visceral fat, and perirenal fat was comparable between JB and HS steers. Circulating fatty acids were also similar in both breeds. Most relevant breed effects were identified in IMF, underlining the uniqueness of this adipose tissue site. JB steers had more monounsaturated FA and less saturated FA. Perilipin 1 and adipose differentiation-related protein (ADFP) mRNA levels were higher in IMF of JB. The results suggest advanced maturity of IMF cells in JB and altered local conditions in muscle influencing IMF accumulation and composition.<br /> (© 2013.)
- Subjects :
- Adipocytes metabolism
Animals
Breeding
Cattle
Intra-Abdominal Fat metabolism
Lipid Metabolism genetics
Male
Phenotype
RNA, Messenger genetics
RNA, Messenger metabolism
Up-Regulation
Adipogenesis genetics
Adipose Tissue metabolism
Fatty Acids blood
Fatty Acids, Monounsaturated blood
Fatty Acids, Unsaturated blood
Gene Expression
Subjects
Details
- Language :
- English
- ISSN :
- 1873-4138
- Volume :
- 96
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Meat science
- Publication Type :
- Academic Journal
- Accession number :
- 23896150
- Full Text :
- https://doi.org/10.1016/j.meatsci.2013.06.027