scholarly journals Enhancing muscle fatty acid profile by pasture finishing within a dairy-origin calf-to-steer beef production system and its potential to authenticate the dietary history of the cattle

2021 ◽  
Author(s):  
A.P. Moloney ◽  
M.G. Keane ◽  
F.J. Monahan ◽  
T.F. O’Callaghan
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Fatty Acid Profile ◽  
Production System ◽  
Omega 3 ◽  
Beef Production ◽  
Pufa Ratio ◽  
Holstein Friesian ◽  
Ad Libitum

The influence of modifying a traditional 24-mo dairy steer calf to beef production system on the fatty acid composition of the longissimus muscle and its potential to authenticate beef provenance was examined. Fifty-four male calves (n = 18 per sire breed), progeny of Holstein-Friesian cows mated with Holstein-Friesian (HF), Aberdeen Angus (AA) and Belgian Blue (BB) bulls were at pasture from March until August of their second year when they were assigned to a 3 (breed types) × 3 (finishing strategies) factorial experiment. The three finishing strategies were (i) pasture only for a further 94 d prior to slaughter (21 mo of age) (Grass), (ii) concentrates ad libitum indoors for 94 d prior to slaughter (21 mo of age) (EC) and (iii) pasture only for a further 94 d followed by concentrates ad libitum indoors for 98 d prior to slaughter (24 mo of age) (LC). Compared to EC, muscle from Grass had a lower intramuscular fat concentration and omega-6: omega-3 polyunsaturated fatty acid (PUFA) ratio and higher proportion of conjugated linoleic acid. A longer period at pasture pre-concentrate finishing increased the concentration of omega-3 PUFA which was still lower than in Grass. To maximise the omega-3 PUFA concentration, a late-maturing breed is more appropriate while to maximise conjugated linoleic acid, an early-maturing breed is more appropriate and both should be finished on grass. Chemometric analysis confirmed that the fatty acid profile can authenticate “Grass-Finished” beef per se and has potential to distinguish “Concentrate-Finished” beef based on the length of grazing prior to finishing, but not distinguish between sire breeds.

Supplementation with whole cottonseed changes milk composition and milk fatty acid profile in dairy cows

2011 ◽  
Vol 51 (2) ◽  
pp. 95 ◽  
Author(s):  
O. Dayani ◽  
G. R. Ghorbani ◽  
A. K. Esmailizadeh
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Fatty Acid Profile ◽  
Milk Yield ◽  
Experimental Period ◽  
Milk Composition ◽  
Milk Fatty Acid ◽  
Whole Cottonseed

Eight multiparous Holstein cows in mid lactation (average days in milking of 160 ± 40) were used in a replicated 4 by 4 Latin square design, each experimental period lasting 3 weeks, to determine the effects of whole cottonseed (WCS) treatment and dietary crude protein (CP) concentration on the profile of milk fatty acids. Each 3-week experimental period consisted of 2 weeks for ration adaptation followed by 1 week for data collection. The experimental diets consisted of: (1) Control (without WCS), 16% CP; (2) 20% WCS, 16% CP; (3) 20% WCS, 13% CP; and (4) 20% crushed WCS, 13% CP. Minerals and vitamin supplements were the same in all experimental diets. The WCS treatment led to increased DM intake, fat-corrected milk yield, fat concentration, proportion of long-chain fatty acids, unsaturated fatty acids and ratio of unsaturated to saturated fatty acids (P < 0.05). Decreased concentration of dietary CP from 16 to 13% (diet 2 compared with diet 3) led to a decrease in both milk yield and milk composition (P < 0.05). WCS crushed in diets with 13% CP (diet 4 compared with diet 3) increased (P < 0.05) the concentration of conjugated linoleic acid in milk fat. The results demonstrated that adding WCS to the diet of lactating cows improves both milk yield and milk fatty acid profile, particularly the proportion of conjugated linoleic acid.

The effects of probiotics and prebiotics on the fatty acid profile and conjugated linoleic acid content of fermented cow milk

2015 ◽  
Vol 66 (3) ◽  
pp. 254-259 ◽  
Author(s):  
Nadia Manzo ◽  
Fabiana Pizzolongo ◽  
Immacolata Montefusco ◽  
Maria Aponte ◽  
Giuseppe Blaiotta ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Fatty Acid Profile ◽  
Acid Content ◽  
Linoleic Acid Content ◽  
Cow Milk

scholarly journals Fatty Acid Profiles of Western Canadian Bison (Bison bison) Meat

2014 ◽  
Vol 3 (6) ◽  
pp. 146 ◽  
Author(s):  
Tyler D. Turner ◽  
Jessica L. Pilfold ◽  
Jessica Jensen ◽  
Dipesh Prema ◽  
Kingsley K. Donkor ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Bison Bison ◽  
Longissimus Dorsi ◽  
Fatty Acid Profiles ◽  
Omega 3 ◽  
Total N ◽  
Omega 6 ◽  
Biohydrogenation Intermediates

<p>Western Canadian bison meat is renowned for its natural healthfulness; however, studies on the dietary effects on the fatty acid (FA) profile are limited. Herein, we evaluated the FA profiles of retail bison (<em>longissimus dorsi</em>) representing grain-fed (Grain), grass-fed (Grass) and grass-fed plus oat and pea screening supplement from early (Early-con) or late (Late-con) season harvested finishing regimes. Bison meat contained less than 30 mg fat/g meat, and was lowest for Early-con bison. Proportions of polyunsaturated FA (PUFA) were greatest in Early-con and lowest for Late-con bison. Early-con bison had the greatest proportion of omega-6 (n-6) FA and Late-con bison the lowest, yet as mg/g meat, total n-6 content did not differ. In contrast, Grass and Early-con bison had greater proportions of 18:3n-3, 20:5n-3, 22:5n-3, 22:6n-3 and total omega-3 (n-3) FA. The n-3 content for Grain, Grass, Early-con and Late-con bison were 38, 90, 69 and 69 mg/100 g meat, respectively. The 3:1 n-6/n-3 ratios of Grass, Early-con and Late-con bison were superior to the 7:1 ratio of Grain bison. Proportions of potentially beneficial biohydrogenation intermediates (BI), including <em>t</em>11-18:1 and <em>c</em>9, <em>t</em>11-conjugated linoleic acid, were greater for Early-con and Late-con bison. Proportions of <em>cis</em>-monounsaturated FA were similar for both Grain and Grass bison; however, Late-con was greater than Early-con bison. Cumulatively, Grass, Early-con and Late-con bison were more desirable compared to Grain on account of greater proportions of n-3 FA and a lower n-6/n-3 ratio. Furthermore, seasonal supplementation enhanced the BI proportions with potential beneficial bioactivity in Early-con and Late-con bison.</p>

Supplemental safflower oil affects the fatty acid profile, including conjugated linoleic acid, of lamb

2005 ◽  
Vol 83 (9) ◽  
pp. 2175-2181 ◽  
Author(s):  
J. A. Boles ◽  
R. W. Kott ◽  
P. G. Hatfield ◽  
J. W. Bergman ◽  
C. R. Flynn
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Fatty Acid Profile ◽  
Safflower Oil
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