The high heat associated with most oil extraction processed denatures the inhibitors since they are proteins. Whole beans must be heat-treated prior to feeding. The meal remaining after oil extraction from Tower or Candle varieties, the common types grown in Canada. Canola meal is an excellent protein source for pigs. The specific needs for minerals and vitamins vary considerably with the age and production stage of particular animals.
Most producers incorporate the appropriate vitamin-mineral premixed into all diets.
These come in many forms with legislation covering their use varying from country to country and continually under revision. Sweetening and flavourings are common in early wean diets to give milk-like taste. Colours are sometimes used to distinguish diets, particularly if feed is medicated. Texturing agents may be added to promote pelleting. Antibiotics - to inhibit or kill bacteria.