Vitamin A and D Potencies of Liver and Intestinal Oils of Halibut (Hippoglossus hippoglossus)

Abstract

In northern British Columbia halibut, size seemed the most important factor determining vitamin A. Vitamin A varied inversely with the per cent of oil in the liver. Vitamin D potency of liver oil appeared unrelated to size of fish or to vitamin A content. Oil from heads and trimmings is low in both vitamins. The per cent of viscera, of liver and of intestines in the samples, and the per cent of unsaponifiable matter and the iodine number of 12 samples of liver oil and 2 samples of intestinal oil are given.