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Estimation of Essential Fatty Acid Intake in Swine¹

University of Minnesota, St. Paul and The Hormel Institute, Austin

Abstract

Two procedures are described that allow the estimation of the average linoleate intake of swine (within perhaps 25% error) from tissue PUFA analysis data. The first of these is by means of multiple regression equations (preferably logarithmic) which are best derived by digital computer methods. The second procedure is, mechanically, much easier. It depends upon the fact that the relationship between the logarithm of the linoleate intake and algebraic sum (diene–triene+tetraene) is found to be linear over the useful range of dietary linoleate intake from 0.2 to 10% of calories. This linear relationship is found not only for swine data but also for data relating to human infants, rats, and chickens.

¹ This work is supported in part by a grant from the National Institutes of Health A4524 and HE 03662-05, the National Dairy Council, the Wesson Fund for Medical Research and Education, the Life Insurance Medical Research Fund, and from the General Research Support Grant from the University of Minnesota College of Medical Sciences.

² Department of Physiological Chemistry, College of Veterinary Medicine, St. Paul.

³ Department of Animal Husbandry and The Hormel Institute.

⁴ Department of Physiological Chemistry and The Hormel Institute.