Effect of soy versus beef diets on blood and tissue cholesterol and body composition of growing swine

Abstract Growing pigs were fed diets, similar in protein and fat content, based on soy protein isolate and soybean oil (soy) or ground beef containing 21% fat (beef). Ground corn, vitamins and minerals completed the diets. Egg yolk was added to balance the intake of cholesterol. No significant differences were seen in total plasma cholesterol or liver cholesterol concentrations. Soy-fed pigs had significantly greater concentrations of cholesterol in the viscera excluding the liver (p Our data show that the soy diet, as compared to the beef diet, increased the proportion of fat in the carcass and increased tissue cholesterol deposition.