Abstract
The feeding of .4 lb (192 g) feed grade fat per head daily, along with a high moisture diet (ensiled high moisture corn, corn silage) did not improve rate of gain or feed efficiency in three experiments involving a total of 256 finishing beef steers. Based on average intakes, there was an apparent depression of feed intake associated with feeding fat and little effect on feed efficiency. In a lamb digestibility experiment the addition of 3% feed grade fat in a dry diet resulted in depressed (P<.01) crude fiber digestibility. Treatment of the added fat with lecithin had no additional effect on crude fiber digestibility, but did result in depressed (P<.05) protein digestibility, as compared to either the control diet or the diet containing 3% added untreated feed grade fat. These results indicate no measurable benefit from the addition of feed grade fat to the ruminant diets utilized in this research.
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