Dietary Copper Interactions in Pigs
Mineral interactions are complicated and not very well understood. A nutritionist has to consider the concentration and form (organic, inorganic, sulfate, oxide, etc.) of a supplemented mineral. They also have to consider the concentration of the minerals that are not supplemented. And, they have to expect different types of interactions in different organs.
Aldridge et al explored how feeding copper in different concentrations and forms altered the status of other minerals in organs of weanling pigs. They conducted a 14-day feeding trial with pigs fed Cu sulfate or Bioplex Cu at 0, 4, 25 or 125 ppm Cu. They measured accumulation of several minerals in intestinal tissue, liver, gall bladder and serum.
Some of their findings?
The authors concluded that mineral interaction relationships cannot be generalized dietary forms, levels and target organs differ. They stressed the importance of considering interactions when requirements are set; and underlined the impact of Cu level and form on heavy metal accumulation.
Titles, authors, links: