scholarly journals Effects of dietary incorporation of linseed oil with soybean isoflavone on fatty acid profiles and lipid metabolism-related gene expression in breast muscle of chickens

animal ◽  
2020 ◽  
Vol 14 (11) ◽  
pp. 2414-2422
Author(s):  
Z.Y. Gou ◽  
X.Y. Cui ◽  
L. Li ◽  
Q.L. Fan ◽  
X.J. Lin ◽  
...  
Keyword(s):  
Gene Expression ◽  
Fatty Acid ◽  
Lipid Metabolism ◽  
Linseed Oil ◽  
Breast Muscle ◽  
Fatty Acid Profiles ◽  
Related Gene ◽  
Soybean Isoflavone

scholarly journals Influence of dietary linseed oil as substitution of fish oil on whole fish fatty acid composition, lipid metabolism and oxidative status of juvenile Manchurian trout, Brachymystax lenok

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jianhua Yu ◽  
Shuguo Li ◽  
Huaxin Niu ◽  
Jie Chang ◽  
Zongfu Hu ◽  
...  
Keyword(s):  
Gene Expression ◽  
Fatty Acid ◽  
Lipid Metabolism ◽  
Fish Oil ◽  
Linseed Oil ◽  
Gene Expression Level ◽  
Expression Level ◽  
Manchurian Trout ◽  
Inclusion Level ◽  
Brachymystax Lenok

Abstract In this study, juvenile Manchurian trout, Brachymystax lenok (initial weight: 6.43 ± 0.02 g, mean ± SE) were received for nine weeks with five types of diets prepared by gradually replacing the proportion of fish oil (FO) with linseed oil (LO) from 0% (LO0) to 25% (LO25), 50% (LO50), 75% (LO75), and 100% (LO100). The eicosapentaenoic (EPA) and docosahexaenoic (DHA) composition decreased with increasing inclusion level of LO (P < 0.05). With increasing LO inclusion level, triglyceride (TAG) content of serum increased significantly, however, there was a decrease in high-density lipoprotein cholesterol (HDL) (P < 0.05). LO substitution of FO up-regulated the gene expression level of lipid metabolism-related genes Fatty Acid Desaturases 6 (FAD6), Acetyl-Coa Carboxylase (ACCα), Sterol Regulatory Element Binding Protein 1 (SREBP-1), and Sterol O- Acyl Transferase 2 (SOAT2), and down-regulated the gene expression level of Peroxisome Proliferator-Activated Receptor a (PPARα) (P < 0.05). The SOD activities of both serum and liver in LO100 were significantly lower than in LO25 (P < 0.05). The CAT activity of the liver in LO100 was significantly lower than in LO0 and LO25 (P < 0.05). This study indicates that the Manchurian trout may have the ability to synthesize LC-PUFAs from ALA, and an appropriate LO in substitution of FO (<75%) could improve both the lipid metabolism and the oxidation resistance.

scholarly journals Effects of Dietary Supplementation of Alpha-Ketoglutarate in a Low-Protein Diet on Fatty Acid Composition and Lipid Metabolism Related Gene Expression in Muscles of Growing Pigs

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 838 ◽  
Author(s):  
Jiashun Chen ◽  
Haihan Zhang ◽  
Hu Gao ◽  
Baoju Kang ◽  
Fengming Chen ◽  
...  
Keyword(s):  
Gene Expression ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Lipid Metabolism ◽  
Crude Protein ◽  
Dietary Supplementation ◽  
Growing Pigs ◽  
Protein Diet ◽  
Related Gene ◽  
Low Protein

The aim of the current study was to investigate whether dietary supplementation with alpha-ketoglutarate (AKG) in a reduced crude protein (CP) diet would affect fatty acid composition and lipid metabolism related gene expression in the muscles of growing pigs. A total of 27 Large White × Landrace growing pigs at 44 ± 1 d of age (11.96 ± 0.18 kg) were randomly allocated to three treatments (n = 9). Dietary treatments included: (1) normal protein diet with 20% crude protein (CP) (NP); (2) a low crude protein diet formulated to contain approximately 17% CP (LP); and (3) a low crude protein diet with 17% CP supplemented with 1% AKG at the expense of regular corn components (ALP). The experimental trial lasted 35 d. The results showed that compared with the NP and LP diets, supplementation with AKG in a low-protein diet increased the intramuscular fat (IMF), oleic acid (C18:1n-9), and monounsaturated fatty acid (MUFA) contents (p < 0.05), and tended to increase the percentage of palmitoleic acid (C16:1) and stearic acid (C18:0) (p < 0.10) in the biceps femoris and longissimus dorsi muscles of growing pigs. These effects may be associated with increased relative mRNA expression levels of fatty acid synthase (FAS), acetyl-CoA carboxylase (ACC), adipocyte determination and differentiation factor 1 (ADD1), fatty acid binding protein 4 (FABP4), and stearoyl-CoA desaturase (SCD) in skeletal muscle, indicating that AKG might be involved in the differential regulation of some key lipogenic genes in skeletal muscles of pigs.

Effects of feeding ryegrass of varying maturity on the metabolism and composition of lipids in the rumen of sheep

1986 ◽  
Vol 106 (3) ◽  
pp. 445-448 ◽  
Author(s):  
T. Gerson ◽  
A. John ◽  
A. S. D. King
Keyword(s):  
Fatty Acid ◽  
Lipid Metabolism ◽  
Linoleic Acid ◽  
Blood Plasma ◽  
Polyunsaturated Fatty Acid ◽  
Perennial Ryegrass ◽  
Crude Protein ◽  
Linseed Oil ◽  
Triacyl Glycerol

SummaryTwo experiments were carried out to test the effects of ryegrass maturity on rumen lipid metabolism. In the first experiment the effect of stage of maturity of perennial ryegrass on lipid metabolism in the rumen was studied with grazing sheep fitted with rumen cannulae. The pasture was either immature (13·8% crude protein), mature (8·1% crude protein) or senescent (5·5% crude protein).The ratesin vitroof triacyl glycerol lipolysis and linoleic acid (18: 2w6) hydrogenation were found to decrease with increasing age of the ryegrass.In the second experiment the sheep were dosed with emulsified linseed oil (30 g) via rumen cannulae while grazing immature or senescent ryegrass and the rumen digesta and blood plasma sampled at 0, 4 and 8 h after dosing.The proportions of linseed oil retained in the rumen were greater and blood plasma linoleic (18:2w6) and linolenic (18:3w3) acid concentrations higher when senescent ryegrass was fed.It was concluded that the rates of rumen lipolysis and hydrogenation decreased with the age of pasture and that after dosing with linseed oil the polyunsaturated fatty acid concentrations in blood plasma increased.

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