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Research r...WeanersTrial report 1101

Trial report no. 1101: Alternatives to medicinal zinc in feed for weaned pigs

The effect of adding 2,500 mg zinc per kg feed 14 d post-weaning did not differ from 1,500 mg zinc, but did improve performance and lowered diarrhoea treatments compared with 0 mg zinc or OceanFeed, MiyaGold and GærPlus in pigs 7-30 kg.

The results of this trial revealed no differences in performance or health in weaned pigs given either 2,500 mg or 1,500 mg medicinal zinc per kg feed for 14 days post-weaning.  

The addition of 2,500 mg zinc per kg feed for 14 days significantly improved production results and lowered the frequency of diarrhoea treatments compared with no zinc or the addition of one of three alternative products: OceanFeed, MiyaGold and GærPlus. Results demonstrated no differences in productivity or treatments for diarrhoea between weaned pigs given one of these products and the pigs given no medicinal zinc in the period 7-30 kg. 

This trial comprised six groups:

  • Group 1 (positive control): 2,500 mg zinc added per kg feed for 14 days post-weaning
  • Group 2: 1,500 mg zinc added per kg feed for 14 days post-weaning
  • Group 3: 0 mg zinc
  • Group 4: OceanFeed (seaweed) added to the feed from 7 to 30 kg
  • Group 5: MiyaGold (probiotic) added to the feed from 7 to 30 kg
  • Group 6: GærPlus (yeast + probiotic ) added to the feed from 7 to 30 kg

This trial demonstrates that it is possible to achieve a 40% drop in the zinc usage, corresponding to an annual drop in Denmark of roughly 170 tonnes in zinc leaches into soil and water, without jeopardizing performance and health, when cutting zinc levels in feed for weaned pigs from 2,500 to 1,500 mg zinc/kg.

 

Updated: 25.04.2017
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