Nutritional values of glycerol for pork. Current status of available knowledge

The development of biofuel production may bring about an increase in the quantities of glycerol available for animal feed. This raw material, if it proves of interest economically, can be readily incorporated into pig feed. The overall effects of glycerol on zootechnical performance and pig carcase characteristics are partly conflicting.Its level of incorporation must be limited to 5%, because a pig’s metabolic capacity for glycerol utilisation is probably lowered above this level.There are additional technological difficulties linked to the lumping of flours in the presence of glycerol.