THE EFFECTS OF FROST DAMAGE ON THE NUTRITIONAL VALUE OF WHEAT: II. FEEDING TESTS ON VARIOUS MILL FRACTIONS

Author:

Bell J. M.

Abstract

Frost-damaged and high quality wheats, weighing 28 and 63 lb. per bushel, respectively, were milled and the patent, clear and red dog flours, the shorts and the bran were used in feeding trials with mice in a factorially designed experiment. Three levels of a multiple B-vitamin supplement were added (0, 25 and 50 per cent of the dietary requirements of the mouse) and the mill fractions were compared (a) directly as the major ingredients in rations containing 16 per cent protein; (b) in rations standardized to contain 7 per cent cellulose, and (c) in rations having wet bulk standardized.No deleterious effects of severe pre-harvest frost damage on the major mill fractions were revealed. Frozen wheat fractions proved to be superior to those from control samples in this test. It was concluded that the reduced feeding value of frozen wheat weighing less than about 45 lb. per bushel could be attributed mainly to the preponderance of bran and shorts, as opposed to endosperm, which reduced the amount of available energy per unit weight of wheat and in part to certain peculiar and yet unexplained effects of ration density which influenced feed capacity of the animals.

Publisher

Canadian Science Publishing

Subject

Animal Science and Zoology,Food Animals

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