title: Postprandial lipoprotein composition in pigs fed diets differing in type and amount of dietary fat.
abstract: To determine the effects of diet on postprandial lipoprotein composition, growing pigs were fed diets containing 20 or 40% of energy as soybean oil, tallow or a 50:50 blend of soybean oil and tallow. At the end of wk 6, a blood sample was drawn from pigs fasted for 12 h. Pigs were then fed, and blood samples were drawn 1 and 4 h later. In LDL, concentrations of free and total cholesterol were greater in pigs fed 40% of energy as fat than in pigs fed 20% of energy as fat (P less than 0.02). Pigs fasted for 12 h had lesser concentrations of triacylglycerol and greater concentrations of phospholipid in LDL and HDL than did pigs fasted for 1 and 4 h (P less than 0.05). In HDL, total cholesterol and phospholipid concentrations were greater in pigs fed 40% of energy as fat than in pigs fed 20% of energy as fat (P less than 0.01). A greater concentration of triacylglycerol was found in VLDL of pigs fed 40% of energy as fat than in pigs fed 20% of energy as fat (P less than 0.01). Amount of dietary fat had a greater effect than did type of dietary fat on composition of lipoproteins from postprandial pigs.
authors.affiliation: Department of Animal Science, Iowa State University, Ames 50011.
authors.forename: C M
authors.initials: CM
authors.lastname: Luhman
authors.forename: T D
authors.initials: TD
authors.lastname: Faidley
authors.forename: D C
authors.initials: DC
authors.lastname: Beitz
mesh_terms: D000818:Animals; D002914:Chylomicrons / Q000378:metabolism; D004041:Dietary Fats / Q000008:administration & dosage / Q000378:metabolism / Q000494:pharmacology*; D005227:Fatty Acids / Q000008:administration & dosage / Q000378:metabolism; D005502:Food; D008074:Lipoproteins / Q000097:blood / Q000378:metabolism*; D008297:Male; D008954:Models, Biological; D013552:Swine
chemical_list: D002914:Chylomicrons; D004041:Dietary Fats; D005227:Fatty Acids; D008074:Lipoproteins