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Dried distiller's grains with solubles (DDGS) is the predominant ethanol co-product fed to swine, and its energy value is about equal to corn even though most ofthe starch is removed to produce ethanol.
This is due to the fact that all other nutrients, including corn oil, remaining in the co-product after ethanol distillation, are concentrated by a factor of three. Corn oil has a much higher (about 2.25 times) energy value compared to starch, and is the mainreason why DDGS is considered such a valuable energy ingredient in swine feeds.

However, due to the high price of crude corn oil and the relatively low capital investment required by ethanol plants to install centrifuges to extract some of the corn oil prior to making DDGS, the profitability and return on investment of oil extraction fromthe ethanol co-product stream is high.

Here's a summary of what was learned: The change in oil content of DDGS had much less of an effect on energy value than the change in fiber content.This was initially surprising because of the high amount of calories in corn oil compared to the calorie concentration in corn fibre.

REST of Article HERE

SkunK