Effects of Dietary Protein and Fat Sources on Plasma
Cholesterol Parameters, LCAT Activity and Amino
Acid Levels and on Tissue Lipid Content
of Growing Pigs
Young male pigs were used to examine effects of dietary protein
and fat sources on plasma cholesterol parameters. Diets providing 16 and 42%
of metabolizable energy from protein and fat, respectively, were fed for 12-14
weeks. Protein was derived either from plant sources (50% from soybean meal
and 25% each from corn and wheat) or from animal sources (90% from casein
and 10% from lactalbumin). The polyunsaturated to saturated fat ratio in the
diets averaged 3.0 in the polyunsaturated fat diets and 0.3 in the saturated fat
diets. Cholesterol content of the four experimental diets (plant protein-polyunsaturated
fat; plant protein-saturated fat; animal protein-polyunsaturated fat;
and animal protein-saturated fat) was 0.6 mg/kcal.
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