The effect of dietary linola oil on CLA and other fatty acids in bovine milk

摘要

To evaluate the effects of fat source on milk fat composition and milk conjugated linoleic acid (CLA) concentration, cows were fed diets that were high in either C18:2 or C18:0. Twenty-two Holstein cows were blocked by parity and milk production and randomly assigned within block to one of two dietary treatments containing either 3% pork fat (LARD) or 3% linola oil (OIL) on a dry matter (DM) basis. The diets were fed for 21 d. Feed intake and milk and milk component yields were unaffected by treatment, whereas milk Fat percent was decreased with the linola oil treatment. The cis-9, trans-11 CLA concentration of milk from cows fed linola on was significantly higher than from cows fed pork lard.