Molecular Nutrition

Effects of Dietary Flax Seed on Fatty Acid Composition and Related Genes Expression in Muscle Tissue and Subcutaneous Fat of Yanbian Yellow Cattle

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  • Co-Innovation Center of Beef Cattle Science and Industry Technology, College of Agriculture, Yanbian University, Yanji 133000, China

Received date: 2018-03-05

  Online published: 2018-09-20

Abstract

This study was conducted to investigate the effects of dietary flax seed on the fatty acid composition and related genes expression in the muscle tissue and subcutaneous fat of Yanbian yellow cattle. Thirty Yanbian yellow cattle with an average weight of about 480 kg were randomly divided into 3 groups (n=10). The cattle in the control group (CON group) were fed a basal diet and those in the experimental groups were fed the basal diets with 8% whole flax seed (WPS group) and 8% broken flax seed (PS group), respectively. Cattles were slaughtered after the test, and the longissimus dorsi muscle and subcutaneous fat tissue were collected for detecting the fatty acid composition and related genes expression. The pre-test period was 10 d and the formal test period was 180 d. The results showed as follows:1) compared with the CON group, average daily gain and average daily feed intake in WPS and PS groups were significantly increased (P<0.05), but there was no significant difference in the feed efficiency (P>0.05). 2) Compared with the CON group, in the muscle tissue, the saturated fatty acid contents of C16:0 and C18:0 in WPS and PS groups were significantly decreased (P<0.05), while the monounsaturated fatty acids contents of C18:1n-9, C18:2cis-9, trans-11, and C18:2trans-10, cis-12 were significantly increased (P<0.05); in the subcutaneous fat, the monounsaturated fatty acids contents of C18:ln-9, C18:2n-6, C18:2cis-9, trans-11, and C18:3n-3 in WPS and PS groups were significantly increased (P<0.05), while the saturated fatty acid contents of C10:0, C12:0, C16:0, and C18:0 were significantly decreased (P<0.05). 3) Compared with the CON group, in the muscle tissue, the gene expression of G protein-coupled receptor (GPR43), sterol regulatory element-binding protein (SREBP), CCAAT enhancement α (CEBPα), and CCAAT enhancement β (CEBPβ) in WPS and PS groups were significantly decreased (P<0.05); in the subcutaneous fat, those 4 genes expression were significantly increased (P<0.05). Therefore, dietary flax seed can regulate the fatty acid composition and related gene expression in the muscle tissue and subcutaneous fat of Yanbian yellow cattle. Under this experimental condition, adding 8% broken flax seed has a better effect, and is beneficial to improve growth performance and regulation of fat metabolism of Yanbian yellow cattle.

Cite this article

YAN Yan, YU Jia, WANG Junyi, YAN Changguo, LI Xiangzi . Effects of Dietary Flax Seed on Fatty Acid Composition and Related Genes Expression in Muscle Tissue and Subcutaneous Fat of Yanbian Yellow Cattle[J]. Chinese Journal of Animal Nutrition, 2018 , 30(9) : 3599 -3608 . DOI: 10.3969/j.issn.1006-267x.2018.09.030

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