The 51th Swine Research Days (JRP) were held in Paris on February 5-6. Two communications from Animine focused on current debate about zinc and copper in piglets feeds.
A study from Ghent University (Belgium) showed that supplementation with pharmacological dosage of the standard zinc oxide or with lower dosage (110 and 220 mg/kg) of HiZox®, a potentiated source of zinc oxide, reduced E.coli population in the piglets intestine compared to the negative control. A source of coated zinc oxide did not show any effect on the bacterial population.
Antibacterial effect of CoRouge® was also demonstrated. An experiment, supervised by Dr. Bikker from Wageningen University showed a stronger reduction in piglets intestinal E.coli with this source of copper(I) oxide compared to copper(II) sulphate (Figure 1). 
Figure 1
Figure 1

These results may explain higher growth performance measured on piglets fed with these innovative sources of zinc and copper.

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