Changes in serum and lipoprotein fatty acids of growing rats fed protein-deficient diets with low or adequate linolenic acid concentrations

Article Abstract:

Protein malnutrition with linolenic acid deficiency in rats was assessed. Protein malnutrition resulted in decreased serum cholesterol, triacylglycerol and protein concentration as well as decreased cholesterol lipoprotein fractions. There was also decreased total (n-6) and (n-3) fatty acids in serum, very low density lipoproteins, high density lipoprotein(2-3) and unsaturated:saturated fatty acid ratio. The 18:2 (n-6) fatty acids in triacylglycerol and 20:4(n-6) and 18:2(n-6) in phospholipids were affected the most. The addition of linolenic acid deficiency resulted in these enhanced effects and decreased serum essential fatty acid availability.

Research, Blood lipids, Linolenic acids, Linolenic acid, Rats, Protein deficiency

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Postprandial lipoprotein composition in pigs fed diets differing in type and amount of dietary fat

Article Abstract:

The influence of dietary amount and source of energy on the serum lipoprotein profile of growing pigs was investigated by keeping test animals on diets containing 20% or 40% tallow, soybean oil or a combination of the two as energy source. Blood samples were collected from fasted and fed swines and analyzed for lipoprotein composition. High density lipoprotein of pigs kept at 40% fat diets have higher phospholipid and cholesterol concentrations, similarly, very low density lipoproteins contain higher levels of triacylglycerol. The amount of fat in the diet had a more significant effect than did the type of fat in the diet.

Dietary fat

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Neonatal genetically lean and obese pigs respond differently to dietary cholesterol

Article Abstract:

The influence of early cholesterol ingestion on its metabolism later in the life of pigs was studied. One day old piglets of lean and obese strains were fed liquid diets with different cholesterol levels for eight weeks. Plasma cholesterol and lipoprotein concentrations were then analyzed. Major increases were noted in the non-high density lipoprotein fraction of plasma cholesterol. A high cholesterol diet also precluded to formation of atherogenic lipoproteins however, genetic factors produced varying response to cholesterol for lean and obese piglets.

Cholesterol

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