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Copper / copper sources

  • Functions
    COPPER is important in the formation of haemoglobin, in the oxygenation process of respiration and is an essential component of several metallo-enzymes: tyrosinase (lack of pigmentation), lysyl oxidase and cardiovascular defects (catalytic action). Copper deficiency can be a serious problem for grazing ruminants. In swine diets copper acts as a growth promoter and increases the feed efficiency
  • Main sources
    COPPER SULPHATE PENTAHYDRATE is by far the most important source of copper.
    Copper mono-oxide (black cupric oxide) constitutes a source used in specific circumstances.
  • Quality parameters
    BIOLOGICAL AVAILABILITY
    The “water soluble” copper sulphate has an excellent bioavailability and may serve as the best reference.
    The “water insoluble” but “acid soluble” cupric oxide releases in the stomachal ambiance its divalent Cu++ ions in the form of CuCl2 and is therefore also capable to provide a satisfactory bioavailability.
FREE FLOWING (anticaking)
STABILITYPURITY (see specifications)
GROWTH PROMOTOR EFFECT

This important feature, specifically for pig breeding has to be dissociated from the biological availability sensu stricto. This important funtion is seperate from the biological availability. Cu++ ions from either the sulphate or oxide forms of copper have an antibiotic function that partially inhibits the growth of pathogenic microflora into the G.I. track.

  • Analytical methods
    Copper content in copper sulphate :
    - electrolysis / potentiometricy
    - dosage with sodiumthiosulphate
    Copper content in cupricoxide :
    - potentiometry
    Impurities:
    - atomic absorption
  • Criteria for selection
    - Availability
    - Stability
    - Crushed material to be avoided.
 
 
 
 
 
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