scholarly journals Effect of High Dietary Level (8%) of Fish Oil on Long-Chain Polyunsaturated Fatty Acid n-3 Content in Pig Tissues and Plasma Biochemical Parameters

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1657
Author(s):  
Tomas Komprda ◽  
Miroslav Jůzl ◽  
Milena Matejovičová ◽  
Lenka Levá ◽  
Markéta Piechowiczová ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Biochemical Parameters ◽  
Nutritive Value ◽  
Plasma Cholesterol ◽  
Daily Weight Gain ◽  
Chain Polyunsaturated Fatty Acid ◽  
Dietary Fish ◽  
Physiological Markers ◽  
Long Chain

There were two objectives of the present study using dietary fish oil (FO) in pigs: to use pigs as a model for studying the effects of high FO doses on selected physiological markers; and to evaluate the physical traits and nutritive value of pork enriched with long-chain polyunsaturated fatty acids n-3. Two groups of six female pigs were fed for 30 days with either a standard feed mixture (control, C) or the same mixture supplemented with 8% FO (F). Physical characteristics of the muscle, fatty acid deposition in tissues and selected hematologic and plasma markers were tested. The daily weight gain of the F-pigs was lower in comparison with controls (p < 0.05). Dietary fish oil decreased Warner-Bratzler shear force of the longissimus muscle (p < 0.01). The eicosapentaenoic and docosahexaenoic acid content was higher (p < 0.05) in all tested F-tissues. Dietary fish oil had no effect on plasma cholesterol (p < 0.05), but it increased plasma triacylglycerol levels by 260% (p < 0.05), and increased counts of leukocytes, neutrophils, and eosinophils in the blood plasma (p < 0.05). In conclusion, high dietary FO improved the texture and nutritive value of meat, but negatively affected plasma biochemical parameters.

scholarly journals Fish oil–based finishing diets strongly increase long‐chain polyunsaturated fatty acid concentrations in farm‐raised common carp ( C yprinus carpio L.)

2014 ◽  
Vol 46 (9) ◽  
pp. 2174-2184 ◽  
Author(s):  
Sebastian Schultz ◽  
Apostolos‐Manuel Koussoroplis ◽  
Zhara Changizi‐Magrhoor ◽  
Jörg Watzke ◽  
Martin J Kainz
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Common Carp ◽  
Polyunsaturated Fatty Acid ◽  
Chain Polyunsaturated Fatty Acid ◽  
Finishing Diets ◽  
Long Chain

scholarly journals Influence of Parental Fatty Acid Desaturase 2 (fads2) Expression and Diet on Gilthead Seabream (Sparus aurata) Offspring fads2 Expression during Ontogenesis

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2191
Author(s):  
Hanlin Xu ◽  
Shajahan Ferosekhan ◽  
Serhat Turkmen ◽  
Juan Manuel Afonso ◽  
María Jesús Zamorano ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Polyunsaturated Fatty Acid ◽  
Sparus Aurata ◽  
Gilthead Sea Bream ◽  
Sea Bream ◽  
Chain Polyunsaturated Fatty Acid ◽  
Nutritional Programming ◽  
Heart Beating ◽  
Long Chain

Previous studies have shown that it is possible to increase the ability of marine fish to produce long-chain polyunsaturated fatty acid from their 18C precursors by nutritional programming or using broodstock with a higher fatty acyl desaturase 2 (fads2) expression. However, those studies failed to show the effect of these interventions on the expression of the fads2 gene in the developing egg. Moreover, there were no studies on the temporal expression of the fads2 during ontogeny in the gilthead sea bream (Sparus aurata). In order to determine the changes in expression of fads2 during ontogeny, gilthead sea bream broodstock with a high (HRO) or low (LRO) fads2 expression fed a diet previously used for nutritional programming, or a fish oil-based diet (LFO) were allowed to spawn. The samples were taken at the stages of spawning, morula, high blastula, gastrula, neurula, heart beating, hatch and 3 day-old first exogenous feeding larvae to determine fads2 expression throughout embryonic development. The results showed the presence of fads2 mRNA in the just spawned egg, denoting the maternal mRNA transfer to the developing oocyte. Later, fads2 expression increased after the neurula, from heart beating until 3-day-old larvae, denoting the transition from maternal to embryonic gene expression. In addition, the eggs obtained from broodstock with high fads2 expression showed a high docosahexaenoic acid content, which correlated with the downregulation of the fads2 expression found in the developing embryo and larvae. Finally, feeding with the nutritional programming diet with the partial replacement of fish oil by rapeseed oil did not affect the long chain polyunsaturated fatty acid (LC-PUFA) contents nor fads2 expression in the gilthead sea bream developing eggs.

scholarly journals Dietary fish oil promotes positive inotropy of ouabain in the rat heart

1999 ◽  
Vol 277 (6) ◽  
pp. H2290-H2297
Author(s):  
Jean-Michel Maixent ◽  
Alain Gerbi ◽  
Odile Barbey ◽  
Carole Lan ◽  
Isabelle Jamme ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Polyunsaturated Fatty Acid ◽  
Cardiac Metabolism ◽  
Male Rats ◽  
Chain Polyunsaturated Fatty Acid ◽  
Control Group ◽  
Resonance Spectroscopy ◽  
Positive Inotropy ◽  
Dietary Fish

We tested the hypothesis that a fish oil (FO) diet promotes positive inotropy of ouabain without increased toxicity. For 2 mo, two groups of adult male rats were fed 1) a regular food diet supplemented with dietary long-chain polyunsaturated fatty acid from FO or 2) a regular food diet (control). The responsiveness to ouabain was evaluated for the two groups in Langendorff-perfused hearts, by31P nuclear magnetic resonance spectroscopy, and on purified membrane-bound Na-K-ATPase. The maximum positive inotropy achieved with ouabain was nearly two times higher in the FO than in the control group and was not associated with significant changes in energetics. Alteration of function and energetic metabolism and inhibition of Na-K-ATPase in response to 3 × 10−4 M ouabain were delayed in the FO group. This study demonstrates that dietary FO, by a cardiac membrane incorporation of n–3 polyunsaturated fatty acid, promotes positive inotropy of ouabain without toxicity and changes in cardiac metabolism.

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