Accretion of n−3 fatty acids in the brain and retina of chicks fed a low-linolenic acid diet supplemented with docosahexaenoic acid

1994 ◽  
Vol 59 (6) ◽  
pp. 1338-1346 ◽  
Author(s):  
G J Anderson ◽  
W E Connor
Keyword(s):  
Fatty Acids ◽  
Docosahexaenoic Acid ◽  
Linolenic Acid ◽  
Acid Diet ◽  
Low Linolenic Acid ◽  
Low Linolenic ◽  
The Brain

Independent effects of dietary linoleic and linolenic fatty acids on the conjugated linoleic acid content of cows’ milk

2002 ◽  
Vol 74 (1) ◽  
pp. 163-176 ◽  
Author(s):  
A.L. Lock ◽  
P.C. Garnsworthy
Keyword(s):  
Fatty Acids ◽  
Mammary Gland ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Linolenic Acid ◽  
Milk Fat ◽  
Latin Square ◽  
Health Benefit ◽  
Low Linolenic Acid ◽  
Low Linolenic

AbstractIt may be desirable to increase the level of conjugated linoleic acid (CLA) in milk as a health benefit in human nutrition. The purpose of this work was to separate the effects of linoleic and linolenic acids on CLA production in dairy cows and to determine to what extent endogenous synthesis contributes to cis-9, trans-11 CLA concentration in milk fat. Eight lactating cows and four non-lactating duodenal fistulated cows were used in a 4 ✕ 4 Latin-square design. All cows received a basal diet of grass silage that was supplemented with one of four concentrates, which were designed to differ in their linoleic and linolenic acid contents. The oil components of the concentrates were produced from mixtures of olive, linseed, rape, soya and sunflower oils to produce the four treatments: low linoleic/ low linolenic acid (LL), low linoleic/high linolenic acid (LH), high linoleic/low linolenic acid (HL) and high linoleic/ high linolenic acid (HH). Milk cis-9, trans-11 CLA contents were 0·8, 0·9, 0·9 and 1·1 g/100 g fatty acid methyl esters (P < 0·05) and yields were 5, 7, 7 and 8 g/day (P < 0·05) for the LL, LH, HL and HH treatments, respectively. The yields of trans-C18:1 fatty acids in milk were 19, 22, 21 and 23 g/day (P < 0·05), respectively. Taking the data for the cis-9, trans-11 CLA content and flow of duodenal fluid from the fistulated cows and representing this in terms of dietary intake by the lactating animals, the amounts of cis-9, trans-11 CLA produced in the rumen were calculated to be 0·8, 0·9, 1·2 and 1·1 g/day (P < 0·05) and for trans-C18:1 fatty acids 58, 58, 66 and 69 g/day (P < 0·05). Increasing linoleic and/or linolenic acids in the diet can increase the cis-9, trans-11 CLA content of cows’ milk. Only diets high in linoleic acid increased cis-9, trans-11 CLA production in the rumen. On all four diets, more than 80% of cis-9, trans-11 CLA in milk was produced endogenously by Δ9-desaturase from trans-11 C18:1 in the mammary gland. Cows on the same diet have different milk fat cis-9, trans-11 CLA concentrations that may be partially explained by differences in Δ9-desaturase activity between cows. Increasing the activity of Δ9-desaturase in the mammary gland may offer greater potential for enhancing the cis-9, trans-11 CLA content of milk fat than increasing cis-9, trans-11 CLA production in the rumen.

Inheritance and characterization of two low linolenic acid EMS-induced McGregor mutant flax (Linum usitatissimum)

1997 ◽  
Vol 77 (3) ◽  
pp. 353-358 ◽  
Author(s):  
Charles Ntiamoah ◽  
Gordon G. Rowland
Keyword(s):  
Fatty Acids ◽  
Linolenic Acid ◽  
Natural Populations ◽  
Recessive Gene ◽  
High Oleic ◽  
Oil Crops ◽  
Methane Sulphonate ◽  
Low Linolenic Acid ◽  
Low Linolenic ◽  
Interspecific Crossing

Mutagens [e.g. EMS (ethyl methane sulphonate)] are sometimes used to generate variability in oil crops when variability is lacking in natural populations, or when strong interspecific crossing barriers prevent hybridization with relatives. It is imperative to conduct genetic studies on beneficial mutants before they can be effectively used in a breeding program. This study was conducted to study the inheritance, and characterize two "apparent" low linolenic acid EMS-induced McGregor flax mutants (E1929 and E1536) that appeared to be quite different from E1747, a linolenic acid deficient McGregor flax mutant which has been extensively studied. Diallele crosses involving 1) E1929, E1536, and McGregor, and 2) E1929, E1536, and E1747 were made. Gas chromatography analyses of fatty acids from seed oil of F1 and F2 populations indicated that E1929 resulted from a reduction in Δ15 desaturase activity, and that the control of the trait is by a single recessive gene. The E1929 gene appears to be allelic to one of the two genes possessed by E1747. E1929 was characterized as a "moderately low linolenic-high oleic acid mutant". E1536 could not be characterized with the available data. Key words: flax, fatty acids, linolenic, Linum

Normal and Low Linolenic Acid Soybean Strains: Response to Planting Date

Crop Science ◽  
1992 ◽  
Vol 32 (5) ◽  
pp. 1248-1251 ◽  
Author(s):  
James R. Wilcox ◽  
James F. Cavins
Keyword(s):  
Linolenic Acid ◽  
Planting Date ◽  
Low Linolenic Acid ◽  
Low Linolenic

Inheritance of Low Linolenic Acid Level in the Soybean Line RG10

Crop Science ◽  
1998 ◽  
Vol 38 (6) ◽  
pp. 1441-1444 ◽  
Author(s):  
Duška Stijšin ◽  
Bruce M. Luzzi ◽  
Gary R. Ablett ◽  
Jack W. Tanner
Keyword(s):  
Linolenic Acid ◽  
Acid Level ◽  
Soybean Line ◽  
Low Linolenic Acid ◽  
Low Linolenic ◽  
Linolenic Acid Level

Effects of an insect–nematode–fungus pest complex on grain yield and composition of specialty low linolenic acid soybean

2012 ◽  
Vol 42 ◽  
pp. 210-216 ◽  
Author(s):  
Michael T. McCarville ◽  
Charles Kanobe ◽  
Matthew E. O'Neal ◽  
Gustavo C. MacIntosh ◽  
Gregory L. Tylka
Keyword(s):  
Grain Yield ◽  
Linolenic Acid ◽  
Low Linolenic Acid ◽  
Low Linolenic
Sign in / Sign up

Export Citation Format

Share Document