Four quadrillion calories may be lost each year because of the inefficient digestion of feed grains by livestock. That sounds like an incomprehensible number, but 25 percent of nutrients in grains like corn, wheat, barley, sorghum, soybean, rapeseed, cottonseed and other grains are trapped by fibre that animals cannot digest, said Alltech scientist Kyle McKinney at the company’s international conference held recently in Lexington.

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