Effect of Dietary n-3 highly unsaturated fatty acids on Growth, Body Composition and Fatty Acid Profiles of Juvenile Black Seabream,Acanthopagrus schlegeli(Bleeker)

2013 ◽  
Vol 44 (3) ◽  
pp. 311-325 ◽  
Author(s):  
Jingjing Ma ◽  
Qingjun Shao ◽  
Zirong Xu ◽  
Fan Zhou
Keyword(s):  
Fatty Acids ◽  
Body Composition ◽  
Fatty Acid ◽  
Unsaturated Fatty Acids ◽  
Fatty Acid Profiles ◽  
Highly Unsaturated Fatty Acids ◽  
Acanthopagrus Schlegeli ◽  
Black Seabream

scholarly journals The same rat Δ6-desaturase not only acts on 18- but also on 24-carbon fatty acids in very-long-chain polyunsaturated fatty acid biosynthesis

2002 ◽  
Vol 364 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Sabine D'ANDREA ◽  
Hervé GUILLOU ◽  
Sophie JAN ◽  
Daniel CATHELINE ◽  
Jean-Noël THIBAULT ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acid ◽  
Unsaturated Fatty Acids ◽  
Fatty Acid Biosynthesis ◽  
Chain Polyunsaturated Fatty Acid ◽  
Acid Biosynthesis ◽  
Highly Unsaturated Fatty Acids ◽  
Long Chain ◽  
Δ6 Desaturase

The recently cloned Δ6-desaturase is known to catalyse the first step in very-long-chain polyunsaturated fatty acid biosynthesis, i.e. the desaturation of linoleic and α-linolenic acids. The hypothesis that this enzyme could also catalyse the terminal desaturation step, i.e. the desaturation of 24-carbon highly unsaturated fatty acids, has never been elucidated. To test this hypothesis, the activity of rat Δ6-desaturase expressed in COS-7 cells was investigated. Recombinant Δ6-desaturase expression was analysed by Western blot, revealing a single band at 45kDa. The putative involvement of this enzyme in the Δ6-desaturation of C24:5n-3 to C24:6n-3 was measured by incubating transfected cells with C22:5n-3. Whereas both transfected and non-transfected COS-7 cells were able to synthesize C24:5n-3 by elongation of C22:5n-3, only cells expressing Δ6-desaturase were also able to produce C24:6n-3. In addition, Δ6-desaturation of [1-14C]C24:5n-3 was assayed invitro in homogenates from COS-7 cells expressing Δ6-desaturase or not, showing that Δ6-desaturase catalyses the conversion of C24:5n-3 to C24:6n-3. Evidence is therefore presented that the same rat Δ6-desaturase catalyses not only the conversion of C18:3n-3 to C18:4n-3, but also the conversion of C24:5n-3 to C24:6n-3. A similar mechanism in the n-6 series is strongly suggested.

0253 The effect of frequency of supplementing rumen protected unsaturated fatty acids on blood serum fatty acid profiles in beef heifers and lactating cows

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 120-121
Author(s):  
E. K. Cook ◽  
M. E. Garcia-Ascolani ◽  
R. E. Ricks ◽  
S. K. Duckett ◽  
N. DiLorenzo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Blood Serum ◽  
Unsaturated Fatty Acids ◽  
Fatty Acid Profiles ◽  
Beef Heifers ◽  
Serum Fatty Acid ◽  
Lactating Cows

The effect of frequency of supplementing rumen-protected unsaturated fatty acids on blood serum fatty acid profiles in beef heifers and lactating cows1

2017 ◽  
Vol 95 (7) ◽  
pp. 2977-2985
Author(s):  
E. K. Cook ◽  
M. E. Garcia-Ascolani ◽  
R. E. Ricks ◽  
S. K. Duckett ◽  
G. C. Lamb ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Blood Serum ◽  
Unsaturated Fatty Acids ◽  
Fatty Acid Profiles ◽  
Beef Heifers ◽  
Serum Fatty Acid
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