scholarly journals Dietary polyunsaturated fatty acids and adaptation to chronic hypoxia alter acyl composition of serum and heart lipids

2009 ◽  
Vol 102 (9) ◽  
pp. 1297-1307 ◽  
Author(s):  
Patricie Balková ◽  
Jana Ježková ◽  
Markéta Hlaváčková ◽  
Jan Neckář ◽  
Barbora Staňková ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Fatty Acid Profile ◽  
Pufa Ratio ◽  
Specific Effects ◽  
Male Wistar Rats ◽  
Main Fatty Acid ◽  
Heart Lipids ◽  
Fish Oil Diet ◽  
Maize Oil

The effects of dietary supplementation with fat of different fatty acid profile and chronic intermittent hypoxia (CIH) on the fatty acid composition of serum and heart lipids were analysed. Adult male Wistar rats were fed a standard non-fat diet enriched with 10 % of lard, fish oil (n-3 PUFA) or maize oil (n-6 PUFA) for 10 weeks. After 4 weeks on the diets, each group was divided in two subgroups, either exposed to CIH in a barochamber (7000 m, twenty-five exposures) or kept at normoxia. In normoxic rats, the fish oil diet increased the level of conjugated dienes. The n-6:n-3 PUFA ratio in serum TAG, phospholipids (PL), cholesteryl esters (CE) and heart TAG, PL and diacylglycerols (DAG) followed the ratio in the fed diet (in the sequence maize oil>lard>fish oil). In heart TAG, PL and DAG, 20 : 4n-6 and 18 : 2n-6 were replaced by 22 : 6n-3 in the fish oil group. The main fatty acid in CE was 20 : 4n-6 in the lard and maize oil groups whereas in the fish oil group, half of 20 : 4n-6 was replaced by 20 : 5n-3. CIH further increased 20 : 5n-3 in CE in the fish oil group. CIH decreased the n-6:n-3 PUFA ratio in serum CE, heart TAG, PL and DAG in all dietary groups and stimulated the activity of catalase in the maize and fish oil groups. In conclusion, PUFA diets and CIH, both interventions considered to be cardioprotective, distinctly modified the fatty acid profile in serum and heart lipids with specific effects on conjugated diene production and catalase activity.

scholarly journals THE EFFECT OF VEGETABLE OILS AND THE FISH OIL ON THE FATTY ACID PROFILE IN EGG YOLKS

Poljoprivreda ◽  
2020 ◽  
Vol 26 (2) ◽  
pp. 79-87
Author(s):  
Gordana Kralik ◽  
Zlata Kralik ◽  
Danica Hanžek ◽  
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Fatty Acid Profile ◽  
Rapeseed Oil ◽  
Crude Protein ◽  
Laying Hens ◽  
Control Groups ◽  
Total N ◽  
Pufa Ratio ◽  
Egg Yolks

The paper presents the results of a research in the use of flaxseed (LO) and rapeseed oil (RO) in a combination with fish oil (FO) in the feeding of laying hens and the effect on the fatty acid profile of egg yolks (∑n-3 PUFA and ∑n-6/∑n-3 PUFA ratio). Nutritional treatments were as follows: C1, C2 = control (5% soybean oil SO), E1 = 1.5% LO+3.5% FO, E2 = 3.5% LO+1.5% FO, E3 = 1.5% RO+3.5% FO, E4 = 3.5% RO+1.5% FO. Feed mixtures for the laying hens were balanced on the basis of a 17% crude protein and 11.5 MJ/kg ME, and the n-6/n-3 PUFA ratio in the mixtures was as follows: C1 13.64, C2 13.10, E1 2.63, E2 1.53, E3 4.84 and E4 6.21. The combination of the flaxseed oil and fish oil in the feed affected the n-6/n-3 PUFA ratio, making it narrower when compared to the combination of rapeseed oil and the fish oil. The control feed C1 and C2 contained only ALA 3.12 and 4.08%, being without the EPA and DHA fatty acids. The analysis of the fatty acid profiles in egg yolks demonstrated that the eggs contained 1.16 and 1.26% of DHA in addition to ALA, which means that, although in the small amounts, the DHA was synthesized and deposited in the eggs by the laying hens. The following proportions of n-3 PUFAs were found in the eggs of the experimental groups: E1 6.51%, E2 8.30%, E3 5.17%, and E4 3.54%. The n-6/n-3 PUFA ratio in egg yolks decreased from 9.67 and 11.85 (control groups) to 3.08 and 2.57, respectively, for the flaxseed and fish oil treatments and 4.25 and 6.95 for the rapeseed and fish oil treatment. The studies have demonstrated a more efficient deposition of the n-3 PUFAs in the yolks of the E1 and E2 groups, although the ALA was most abundantly present in the total n-3 PUFAs.

scholarly journals Effect of fishmeal and fish oil replacement by algal meals on biological performance and fatty acid profile of hybrid striped bass (Morone crhysops ♀ × M. saxatilis ♂)

Aquaculture ◽  
2019 ◽  
Vol 507 ◽  
pp. 83-90 ◽  
Author(s):  
Martin Perez-Velazquez ◽  
Delbert M. Gatlin ◽  
Mayra L. González-Félix ◽  
Armando García-Ortega ◽  
Clement R. de Cruz ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Fatty Acid Profile ◽  
Striped Bass ◽  
Hybrid Striped Bass ◽  
Fish Oil Replacement ◽  
Biological Performance

scholarly journals Dietary fish oil modulates macrophage fatty acids and decreases arthritis susceptibility in mice.

1985 ◽  
Vol 162 (4) ◽  
pp. 1336-1349 ◽  
Author(s):  
C A Leslie ◽  
W A Gonnerman ◽  
M D Ullman ◽  
K C Hayes ◽  
C Franzblau ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Fish Oil ◽  
Corn Oil ◽  
Type Ii Collagen ◽  
Chow Diet ◽  
Standard Diet ◽  
Type Ii ◽  
Fish Oil Diet

B10.RIII and B10.G mice were transferred from a diet of laboratory rodent chow to a standard diet in which all the fat (5% by weight) was supplied as either fish oil (17% eicosapentaenoic acid [EPA], 12% docosahexaenoic acid [DHA], 0% arachidonic acid [AA], and 2% linoleic acid) or corn oil (0% EPA, 0% DHA, 0% AA, and 65% linoleic acid). The fatty acid composition of the macrophage phospholipids from mice on the chow diet was similar to that of mice on a corn oil diet. Mice fed the fish oil diet for only 1 wk showed substantial increases in macrophage phospholipid levels of the omega-3 fatty acids (of total fatty acid 4% was EPA, 10% docosapentaenoic acid [DPA], and 10% DHA), and decreases in omega-6 fatty acids (12% was AA, 2% docosatetraenoic acid [DTA], and 4% linoleic acid) compared to corn oil-fed mice (0% EPA, 0% DPA, 6% DHA, 20% AA, 9% DTA, and 8% linoleic acid). After 5 wk this difference between the fish oil-fed and corn oil-fed mice was even more pronounced. Further small changes occurred at 5-9 wk. We studied the prostaglandin (PG) and thromboxane (TX) profile of macrophages prepared from mice fed the two diets just before being immunized with collagen. Irrespective of diet, macrophages prepared from female mice and incubated for 24 h had significantly more PG and TX in the medium than similarly prepared macrophages from male mice. The increased percentage of EPA and decreased percentage of AA in the phospholipids of the macrophages prepared from the fish oil-fed mice was reflected in a reduction in the amount of PGE2 and PGI2 in the medium relative to identically incubated macrophages prepared from corn oil-fed mice. When this same fish oil diet was fed to B10.RIII mice for 26 d before immunization with type II collagen, the time of onset of arthritis was increased, and the incidence and severity of arthritis was reduced compared to arthritis induced in corn oil-fed mice. The females, especially those on the fish oil diet, tended to have less arthritis than the males. These alterations in the fatty acid pool available for PG and leukotriene synthesis suggest a pivotal role for the macrophage and PG in the immune and/or inflammatory response to type II collagen.

Fish oil-free diets for Pacific white shrimp Litopenaeus vannamei: The effects of DHA-EPA supplementation on juvenile growth performance and muscle fatty acid profile

Aquaculture ◽  
2019 ◽  
Vol 511 ◽  
pp. 734276 ◽  
Author(s):  
Bruno Cavalheiro Araújo ◽  
José Antonio Mata-Sotres ◽  
María Teresa Viana ◽  
Aurora Tinajero ◽  
André Braga
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Growth Performance ◽  
Fatty Acid Profile ◽  
Litopenaeus Vannamei ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Juvenile Growth
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