The response of gene expression associated with lipid metabolism, fat deposition and fatty acid profile in the longissimus dorsi muscle of Gannan yaks to different energy levels of diets

The energy available from the diet, which affects fat deposition in vivo, is a major factor in the expression of genes regulating fat deposition in the longissimus dorsi muscle. Providing high-energy diets to yaks might increase intramuscular fat deposition and fatty acid concentrations under a trad...

Full description

Saved in:
Bibliographic Details
Published in:PloS one 2017-11, Vol.12 (11), p.e0187604-e0187604
Main Authors: Yang, Chao, Liu, Jianbin, Wu, Xiaoyun, Bao, Pengjia, Long, Ruijun, Guo, Xian, Ding, Xuezhi, Yan, Ping
Format: Article
Language:English
Subjects:
Acetyl-CoA carboxylase
Adipose Tissue - metabolism
Animals
Beef
Biology and Life Sciences
Body weight
Cattle
Cold Temperature
Deposition
Desaturase
Diet
Earth Sciences
Ecology and Environmental Sciences
Ecosystems
Energy
Energy Intake - physiology
Engineering
Fat metabolism
Fatty acid composition
Fatty acid-binding protein
Fatty acids
Fatty Acids - metabolism
Fatty-acid synthase
Gene expression
Genes
Genetic aspects
Health aspects
Immune response
Laboratory animals
Lipid metabolism
Lipids
Lipogenesis - physiology
Meat quality
Medicine and Health Sciences
Metabolism
Muscle, Skeletal - metabolism
Pharmaceutical sciences
Physical Sciences
Physiological aspects
Polyunsaturated fatty acids
Proteins
Rodents
Stearoyl-CoA desaturase
Sterol regulatory element-binding protein
Sterols
Yaks
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The energy available from the diet, which affects fat deposition in vivo, is a major factor in the expression of genes regulating fat deposition in the longissimus dorsi muscle. Providing high-energy diets to yaks might increase intramuscular fat deposition and fatty acid concentrations under a traditional grazing system in cold seasons. A total of fifteen adult castrated male yaks with an initial body weight 274.3 ± 3.14 kg were analyzed for intramuscular adipose deposition and fatty acid composition. The animals were divided into three groups and fed low-energy (LE: 5.5 MJ/kg), medium-energy (ME: 6.2 MJ/kg) and high-energy (HE: 6.9 MJ/kg) diets, respectively. All animals were fed ad libitum twice daily at 08:00-09:00 am and 17:00-18:00 pm and with free access to water for 74 days, including a 14-d period to adapt to the diets and the environment. Intramuscular fat (IMF) content, fatty acid profile and mRNA levels of genes involved in fatty acid synthesis were determined. The energy levels of the diets significantly (P
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0187604