Comparative Studies of Lipid Metabolism in Zebu and British Cattle in a Tropical Environment. II. Blood Lipid Levels of Cattle on Different Diets

Abstract

Breed differences in plasma lipid levels were previously reported for cattle grazing near Rockhampton, Qld. The present study investigated the blood lipids of British· and Zebu· type cattle subjected to the same dietary treatments. On high-quality diets only plasma non·esterified fatty acid concentrations were significantly affected (P < 0·01) by level of intake. Plasma total cholesterol, phospholipid, and triglyceride levels were depressed by a low-quality diet which elevated the free: total cholesterol ratio.