scholarly journals Distribution of trans-vaccenic acid and cis9, trans11-conjugated linoleic acid (rumenic acid) in blood plasma lipid fractions and secretion in milk fat of Jersey cows fed canola or soybean oil

2002 ◽  
Vol 51 (2) ◽  
pp. 119-134 ◽  
Author(s):  
Juan J. Loor ◽  
Lora E. Quinlan ◽  
Aloka B.P.A. Bandara ◽  
Joseph H. Herbein
Keyword(s):  
Linoleic Acid ◽  
Soybean Oil ◽  
Blood Plasma ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Vaccenic Acid ◽  
Plasma Lipid ◽  
Lipid Fractions ◽  
Jersey Cows ◽  
Trans Vaccenic Acid

Obtaining a hydrolyzed milk fat fraction enriched in conjugated linoleic acid and trans-vaccenic acid

2014 ◽  
Vol 36 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Sergio I. Martínez-Monteagudo ◽  
Mohamed Khan ◽  
Feral Temelli ◽  
Marleny D.A. Saldaña
Keyword(s):  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Vaccenic Acid ◽  
Fat Fraction ◽  
Trans Vaccenic Acid

Effect of ewe feeding system (grass v. concentrate) on intramuscular fatty acids of lambs raised exclusively on maternal milk

2005 ◽  
Vol 81 (3) ◽  
pp. 431-436 ◽  
Author(s):  
M. A. Valvo ◽  
M. Lanza ◽  
M. Bella ◽  
V. Fasone ◽  
M. Scerra ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Linolenic Acid ◽  
Vaccenic Acid ◽  
Saturated Fatty Acids ◽  
Feeding System ◽  
Pasture Grass ◽  
Maternal Milk ◽  
Trans Vaccenic Acid

AbstractTwenty pregnant Comisana ewes were divided into two groups of 10. One group was allowed to graze a vetch pasture (grass). The second group of animals was housed collectively in a pen and was given hay and concentrates (concentrate). After lambing, all the ewes were allowed to stay with the respective lambs between 18:00 h and 07:00 h of the following day in two different pens. Therefore all the lambs were raised exclusively on maternal milk. The lambs were slaughtered at 38 days of age. Milk and lamb meat (longissimus dorsi muscle) fatty acids were analysed. Ewes on grass produced milk with a lower (P < 0·001) proportion of saturated fatty acids and with a higher proportion of both monounsaturated (P < 0·05) and polyunsaturated fatty acids (P < 0·01) than ewes given concentrates. Trans-vaccenic acid was significantly higher (P < 0·001) in milk from grass-fed animals compared with ewes given concentrates. Linoleic acid (C18: 2 n-6) tended to be higher (P = 0·06) in milk from ewes on concentrates while linolenic acid (C18: 3 n-3) was significantly higher (P < 0·001) in milk from animals grazing pasture. Conjugated linoleic acid (cis-9, trans-11 C18: 2) was almost double in milk from grass-fed ewes compared with animals given concentrates (P < 0·001). Regarding lamb tissue, trans-vaccenic acid (C18: 1 trans-11) was higher (P = 0·01) in the fat from lambs raised by grazing ewes. Linoleic acid (C18: 2 n-6) was at higher concentration (P < 0·001) in the fat from lambs raised by ewes given concentrates. Linolenic acid (C18: 3 n-3) was increased three-fold (P < 0·001) in the fat of lambs from the grass group compared with lambs suckled by ewes given concentrates. The isomer cis-9, trans-11 of conjugated linoleic acid was present at double concentration (P < 0·001) in the fat from animals raised by grazing ewes. Eicosapentaenoic (C20: 5 n-3; EPA) and docosaesaenoic (C22: 6 n-3; DHA) acids were higher (respectively P < 0·001 and P = 0·01) in the intramuscular fat from lambs from the grass group compared with animals from the concentrate group. The n-6/n-3 ratio was lower (P < 0·001) in the meat from lambs raised by grazing ewes. Overall this trial showed that ewe feeding system strongly affects intramuscular fatty acids even in lambs raised exclusively on maternal milk.

scholarly journals Trans-Vaccenic Acid Is Desaturated to Conjugated Linoleic Acid in Mice

2000 ◽  
Vol 130 (2) ◽  
pp. 208-215 ◽  
Author(s):  
Jamie E. Santora ◽  
Donald L. Palmquist ◽  
Karla L. Roehrig
Keyword(s):  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Vaccenic Acid ◽  
Trans Vaccenic Acid

Preparation and characterization of control materials for the analysis of conjugated linoleic acid and trans-vaccenic acid in beef

2010 ◽  
Vol 43 (9) ◽  
pp. 2253-2261 ◽  
Author(s):  
Katherine M. Phillips ◽  
David M. Ruggio ◽  
Juliette C. Howe ◽  
Jennifer M. Leheska ◽  
Stephen B. Smith ◽  
...  
Keyword(s):  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Vaccenic Acid ◽  
Trans Vaccenic Acid

Temporal changes in milk conjugated linoleic acidfor cows fed a pasture- or conserved-forages-based diet and supplemented with fish oil and sunflower oil

2008 ◽  
Vol 88 (1) ◽  
pp. 123-127
Author(s):  
D. O. Felton ◽  
S. A. Ibrahim ◽  
A. A. AbuGhazaleh
Keyword(s):  
Linoleic Acid ◽  
Fish Oil ◽  
Conjugated Linoleic Acid ◽  
Sunflower Oil ◽  
Milk Fat ◽  
Vaccenic Acid ◽  
Temporal Changes ◽  
Corn Silage ◽  
Forage Fish ◽  
Oil Sunflower

The objective of this experiment was to evaluate the effect of forage source on the temporal changes in milk conjugated linoleic acid (CLA). Fourteen Holstein cows were divided into two groups. One group (LOT) was fed a corn silage-alfalfa hay mix ad libitum, while the other group (PAS) grazed on alfalfa-grass pasture. Additionally, both groups were fed 8.2 kg d-1 grain supplement containing 650 g of oil composed of fish oil and sunflower oil (1:4). The concentration of cis-9, trans-11 CLA in milk fat of both diets reached maximum levels on day 3 of oil supplementation, declined during day 6, and then remained constant during the reminder of the experiment. Milk vaccenic acid (VA) and trans-10 C18:1 reached their maximum concentrations on days 3 and 6, respectively, of oil supplementation with both diets. In conclusion, the decline in milk cis-9, trans-11 CLA over time was not affected by forage source and may have resulted from an increase in formation of trans-10 C18:1 and C18:0 at the expenses of VA. Key words: Conjugated linoleic acid, milk, forage, fish oil, sunflower oil

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