Dose-response relationships between dietary (n-3) fatty acids and plasma and tissue lipids, steroid excretion and urinary malondialdehyde in rats

Article Abstract:

The effects of various dietary fish oil concentrations on lipid metabolism of rats were studied. Increased fish oil intake resulted in increased incorporation of long chain (n-3) fatty acids in plasma total lipid at the expense of arachidonic acid. The decreased plasma cholesterol level due to increased fish oil intake can not be explained by triglyceride or cholesterol shifts into tissues nor fecal excretion of neutral sterols and bile acids since the fish oil diet did not affect these variables. Urinary excretion of malondialdehyde, which assesses lipid peroxidation, was increased with fish oil diet concentrations of more than 1.8%.

Health aspects, Physiological aspects, Food and nutrition, Dietary fat, Rats, Fish oils, Lipid peroxidation

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Barley diets with different fat sources have hypocholesterolemic effects on chicks

Article Abstract:

Comparative studies were made on the hypocholesterolemic effects of various soluble dietary fiber on chicks for 17 days. One set of chicks had a diet with 60% hull-less barley while another had a diet with 60% red spring wheat. The barley-fed chicks showed lower plasma and liver cholesterol levels, possibly because the high soluble fiber content of barley restricted fat absorption, whatever the fat source. Excreta from barley-fed chicks contained slightly higher crude fat and lower dry matter. Wheat-fed chicks, however, grew faster and heavier, using nutrients more efficiently.

Animal nutrition, Dietary fiber, Cholesterol metabolism, Fiber in animal nutrition

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