<prompt> Colonic bacteria, on digestion of dietary fibres would give?Free radicalsGlycerolButyrateButyrate  <response>: C i.e ButyratesIn herbivores, such as ruminants, fiber mainly as cellulose is a major source of energy after it has been digested by colonic microorganisms to small chain fatty acids acetate, propionate and butyrateQ which are absorbed into the poal vein. Colonic fermentation may also contribute to human energy requirements. 