Submitted to: Meeting Abstract
Publication Type: Proceedings
Publication Acceptance Date: December 14, 2000
Publication Date: N/A
Technical Abstract: Meat and milk from ruminant animals is the major source of conjugated linoleic acid (CLA) in the human diet. CLA has been shown to be an anticarcinogen, to foster less fat and more lean tissue development in growing animals, to reduce development of atherosclerosis in rabbits, and to have some role in normalizing impaired glucose tolerance in noninsulin- dependent diabetic rats. It is clear that CLA is having very important biological activity in laboratory animals. It remains to be seen if CLA has similar activity in humans, and whether the amount of CLA that people could expect to consume in normal diets would provide sufficient CLA to have an effect, if indeed it was active in humans. This paper describes research that has been done to increase the concentration of CLA in milk. Grazing cows, compared to feeding typical confinement diets, will increase CLA content of milk 2- to 5-fold. Feeding vegetable oils in the dairy diet will also increase CLA content of milk fat by a similar amount.