Effect of breed on lipid metabolism in growing-fattening bulls 2. fatty acid composition in the carcasses

1992 ◽  
Vol 1992 ◽  
pp. 183-183
Author(s):  
A. Clinquart ◽  
C. Van Eenaeme ◽  
L. Istasse ◽  
N. Korsak ◽  
P. Baldwin ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Cholesterol Level ◽  
Acid Composition ◽  
Serum Cholesterol Level ◽  
Saturated Fat ◽  
Initial Weight ◽  
Dual Purpose ◽  
High Consumption ◽  
Tissue Proportion

The incidence of human coronary heart disease has been correlated with the serum cholesterol level and a high consumption of saturated fat. Furthermore the cholesterol level can be raised by shorter chain fatty acids (Rose, 1990). It was therefore interesting to compare breeds extreme in terms of fatness. The adipose tissue proportion of the Belgian Blue double muscled type (BBDM) is low while that in Holstein is high, the Belgian Blue dual purpose (BBDP) type being intermediate. The present experiment was designed to investigate how large difference in degree of fatness can be associated with differences in fatty acid composition.Four bulls of the 3 breeds were used in a fattening trial. Their initial weight was 340 kg. Biopsy samples were taken from the Longitimus Dorsi (LD) at weeks 5 and 16 of the fattening period. They were slaughtered after 145 days. The 7-8-9 ribs and perirenal fat (PR) were removed at slaughter. Intramuscular (M) and intermuscular (IM) fats of the LD were obtained after dissection of the 7-8-9 ribs.

scholarly journals The regulation of hepatic stearoyl-coenzyme A desaturase in obese-hyperglycaemic (ob/ob) mice by food intake and the fatty acid composition of the diet

1982 ◽  
Vol 206 (3) ◽  
pp. 561-570 ◽  
Author(s):  
M Enser ◽  
J L Roberts
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Food Intake ◽  
Acid Composition ◽  
Desaturase Activity ◽  
Corn Oil ◽  
Saturated Fat ◽  
Obese Mice ◽  
Commercial Diet

1. The effects of food intake and the fatty acid composition of the diet on the hepatic stearoyl-CoA desaturase activity of obese-hyperglycaemic (ob/ob) mice were investigated. 2. Obese mice fed on a commercial mouse diet, ad libitum, had 6.5-fold more activity per liver cell than had lean mice. 3. On a diet containing 14% corn oil the activity was 65% less in obese mice and 62% less in lean mice compared with animals fed on the commercial diet. 4. Feeding with 14% saturated fat in the diet doubled the activity in lean mice compared with those on the commercial diet, but had no effect on the activity in obese mice. 5. Obese mice fed on the corn-oil diet contained a higher proportion of linoleic acid in the liver lipids than did lean mice fed on the commercial diet, but the acyl-CoA desaturase activity was 125% higher than in the lean mice. 6. Limiting the food intake of obese mice by pair-feeding with lean mice decreased their acyl-CoA desaturase activity when the animals were fed on the saturated-fat diet, but the activity remained 75% higher than in lean mice, whereas in obese mice pair-fed on the corn-oil diet the activity was the same as in lean mice. 7. During starvation the acyl-CoA desaturase activity in livers from obese mice decreased more slowly and proportionately less than in livers from lean mice. 8. It is concluded that increased substrate supply as a result of hyperphagia and not low concentration of linoleic acid is the main factor causing high acyl-CoA desaturase activity in obese mice.

scholarly journals Serum adipokine profile and fatty acid composition of adipose tissues are affected by conjugated linoleic acid and saturated fat diets in obese Zucker rats

2009 ◽  
Vol 103 (6) ◽  
pp. 869-878 ◽  
Author(s):  
Susana V. Martins ◽  
Paula A. Lopes ◽  
Cristina M. Alfaia ◽  
Pedro O. Rodrigues ◽  
Susana P. Alves ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Saturated Fat ◽  
Zucker Rats ◽  
Adipose Tissues ◽  
Obese Zucker Rats ◽  
Fat Diets ◽  
Pai 1

Conjugated linoleic acid (CLA) has been reported as having body fat lowering properties and the ability to modulate the inflammatory system in several models. In the present study, the effects of CLA added to saturated fat diets, from vegetable and animal origins, on the serum adipokine profile of obese Zucker rats were assessed. In addition, the fatty acid composition of epididymal and retroperitoneal adipose tissues was determined and a principal component analysis (PCA) was used to assess possible relationships between fatty acids and serum metabolites. Atherogenic diets (2 % cholesterol) were formulated with palm oil and ovine fat and supplemented or not with 1 % of a mixture (1:1) ofcis-9,trans-11 andtrans-10,cis-12-CLA isomers. CLA-fed animals exhibited lower daily feed intake, final body and liver weights, and hepatic lipids content. Total and LDL-cholesterol levels were increased in CLA-supplemented groups. CLA also promoted higher adiponectin and lower plasminogen activator inhibitor-1 (PAI-1) serum concentrations. In contrast to palm oil diets, ovine fat increased insulin resistance and serum levels of leptin, TNF-α and IL-1β. Epididymal and retroperitoneal adipose tissues had similar deposition of individual fatty acids. The PCA analysis showed that thetrans-10,cis-12-CLA isomer was highly associated with adiponectin and PAI-1 levels. Summing up, CLA added to vegetable saturated enriched diets, relative to those from animal origin, seems to improve the serum profile of adipokines and inflammatory markers in obese Zucker rats due to a more favourable fatty acid composition.

scholarly journals ‘Zeitoun Ennour’: A new olive (Olea europaea L.) cultivar in Tunisia with high oil quality

2021 ◽  
Vol 2 (4) ◽  
pp. 1-6
Author(s):  
Fathi Ben Amar ◽  
Imen Guellaoui ◽  
Mohamed Ayadi ◽  
Olfa Elloumi ◽  
Mohamed Ali Triki ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Oil Quality ◽  
Oleic Acid Content ◽  
Dual Purpose ◽  
High Oleic ◽  
Local Cultivar ◽  
Self Compatibility ◽  
Late Maturity

An olive breeding program was started in Tunisia in 1993 in order mainly to improve the fatty acid composition of the local cultivar ‘Chemlali Sfax’. ‘Zeitoun Ennour’ is a new cultivar obtained from a cross between ‘Chemlali Sfax’ and the local dual-purpose use cultivar ‘Chemchali Gafsa’. The morphological study of this cultivar showed that eleven characters dealing with fruit and endocarp differed from ‘Chemlali Sfax’, mainly regarding to their respective weights. This new cultivar had the same sensitivity to Verticillium dahliae Kleb and earlier bearing than the original variety. Its olive production was considered as high as for ‘Chemlali Sfax’ but with partial self-compatibility and late maturity. The new cultivar realized a net improvement in comparison with the original cultivar particularly regarding its fatty acid composition with very high oleic acid content (>75 %) and low palmitic and linoleic acid contents (<10 %). The new cultivar was recently released and will be available for growers as soon as possible.

The Effect of Feeding Different Sources and Levels of Oil on the Fatty Acid Composition of Bovine Milk

1996 ◽  
Vol 1996 ◽  
pp. 76-76
Author(s):  
R J Mansbridge ◽  
J S Blake
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Bovine Milk ◽  
Saturated Fat ◽  
Niche Markets ◽  
Naked Oats ◽  
Dietary Oil ◽  
Different Sources ◽  
Effect Of Feeding

Medical authorities are increasingly recommending a reduction in the proportion of dietary energy derived from saturated fats (COMA). Milk processors are keen to identify new milk products for niche markets, and the production of 'healthier' milk may be required in the future. Dairy products are a major source of saturated fat in the diet and the work reported here examines the effect of feeding different sources of dietary oil on the fatty acid composition of bovine milk.In a 4 × 2 factorial experiment 96 Holstein cows were offered complete diets containing one of four oil sources, a calcium soap of palm fatty acid distillate(C), naked oats (O), pressure cooked whole soybeans (S) and partially oil extracted rapeseed (R), at two supplement to grass silage ratios (0.48:0.52 (low) or 0.70:0.30 (high)) in weeks 4 to 13 post calving.

Evaluation of cooling strategies for pumping of milk – Impact of fatty acid composition on free fatty acid levels

2005 ◽  
Vol 72 (4) ◽  
pp. 476-481 ◽  
Author(s):  
Lars Wiking ◽  
Hanne C Bertram ◽  
Lennart Björck ◽  
Jacob H Nielsen
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Free Fatty Acids ◽  
Acid Composition ◽  
Milk Fat ◽  
Saturated Fat ◽  
The Other ◽  
Fat Globules ◽  
Milk Fat Globules

Cooling strategies for pumping of raw milk were evaluated. Milk was pumped for 450 s at 31 °C, or pumped after cooling to 4 °C and subsequently subjected to various incubation times. Two types of milk were used; i.e. milk from cows fed a diet high in saturated fat supplements resulting in significantly larger milk fat globules than the other type of milk which comes from cows fed a low-fat diet that stimulates high de novo fat synthesis. The content of liquid fat was determined by low-field 1H NMR, which showed that milk from cows given the saturated fat diet also contained less liquid fat at both 4 ° and 31 °C than the other type of milk. This can be ascribed to the differences in the fatty acid composition of the milk as a result of the fatty acid composition of the diets. After pumping of the milk at 31 °C, measurement of fat globule size distribution revealed a significant coalescence of milk fat globules in the milk obtained from the saturated fat diet due to pumping. Pumping at 4 °C or pumping the other type of milk did not result in coalescence of milk fat globules. Formation of free fatty acids increased significantly in both types of milk by pumping at 31 °C. Cooling the milk to 4 °C immediately before pumping inhibited an increased content of free fatty acids. However, when the milk was incubated at 4 °C for 60 min after cooling and then subjected to pumping, a significant increase in the formation of free fatty acids was observed in both types of milk. It is suggested that this increase in free fatty acids is caused by transition of polymorphic crystal forms or higher level of attached lipoprotein lipases to the milk fat globule before pumping.

scholarly journals Comparison of Japanese Deer Meat and Cattle Meat for Cholesterol Level and Fatty Acid Composition.

2001 ◽  
Vol 48 (1) ◽  
pp. 20-26 ◽  
Author(s):  
Mitsuharu ISHIDA ◽  
Emi ODASHIMA ◽  
Syoushichi IKEDA ◽  
Takeo TAKEDA
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Cholesterol Level ◽  
Acid Composition ◽  
Cattle Meat

scholarly journals Phospholipid fatty acid composition and protein kinase C activity in the large intestine of rats fed on butter and coconut-oil diets

1999 ◽  
Vol 82 (5) ◽  
pp. 411-418 ◽  
Author(s):  
Anne-Maria Pajari ◽  
Marja Mutanen
Keyword(s):  
Fatty Acid Composition ◽  
Protein Kinase C ◽  
Fatty Acid ◽  
Protein Kinase ◽  
Acid Composition ◽  
Phospholipid Fatty Acid ◽  
Saturated Fat ◽  
Coconut Oil ◽  
Phospholipid Fatty Acid Composition ◽  
Kinase C

Protein kinase C (PKC) has been proposed to play an important role in the aetiology of colon cancer. Therefore, we investigated whether the amount and type of saturated fat could affect colonic PKC activity by modifying either mucosal phospholipid fatty acid composition or faecal diacylglycerol production. Male Wistar rats (n 13 per group) were fed on diets containing butter or coconut oil at energy levels of 10 % and 43 % for 4 weeks. The control group received a low-fat diet providing 10 % of energy from sunflowerseed oil. PKC activity was higher in the distal than the proximal colon but the quantity or type of fat did not alter PKC activity in either region of the colon. Saturated fats caused moderate changes in the fatty acid composition of caecal phospholipids, which were more obvious in the phosphatidylethanolamine than in the phosphatidylcholine fraction. A significant correlation was found between fatty acid composition of phosphatidylcholine and membrane PKC activity. In particular, there was a positive correlation between the proportion of saturated 14:0 and 18:0 and increased PKC activity while unsaturated 18:2n-6, 20:4n-6 and 16:1n-7 were inversely correlated with PKC activity. No relationship was found between phosphatidylethanolamine fatty acids and PKC activity. Concentration of faecal diacylglycerol was not affected by the diet. Overall the data suggest that diets high in saturated fat may not alter colonic PKC activity to a significant extent.

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