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Abstract
The effect of varying concentrate composition to include 5% linseed and 200IU of vitamin E on the growth performance, fatty acid composition, and muscle color during shelf life was assessed in 46 young Pirenaica bulls finished to two fatness levels. Adding 5% linseed lowered the dressing rate without altering daily gain or carcass classification. It likewise did not alter the total saturated, monounsaturated, or polyunsaturated fatty acids in the intramuscular fat, though the percentage of α-linolenic acid and n−3 fatty acids increased significantly while the n−6 fatty acid to n−3 fatty acid ratio decreased. Higher subcutaneous fat cover depth at slaughter increased the total percentage of oleic acid and monounsaturated fatty acids without affecting the percentage of saturated or polyunsaturated fatty acids. Adding 200IU of vitamin E in addition to linseed did not alter the color of film-wrapped fresh meat during storage in darkness.
Published Version
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