…I decided to change the feed from GM to non-GM soy in April 2011 without telling the herdsman on the farm. Two days afterwards, he said to me: “You have changed the food.” He always notices whenever there is any problem with the feed and tells me. This time was different. Something very good was happening with the food as the pigs were not getting diarrhoea any more. The farm was saving 2/3 of the medicine or £7.88 per sow; not just my farm but three other farms in Denmark that switched from GMO to non GMO feed have also seen the same. Medication after the changeover in the weaners barn also went down dramatically by 66 %, with one type of antibiotics not being used since.
The sows have higher milk production; we can tell because the sows are suckling 1, 2 or 3 more piglets and have more live born pigs, on average 1.8 piglets more per sow. They wean 1,8 pigs more pr. litter, and have more live born pigs. We have seen a certain aggressive diarrhoea disappear altogether that affected young piglets in the first week of life, killing up to 30 % of the pigs. It has completely gone for over 3 years. Sows no longer suffer from bloating or ulcers and they also live longer in high production, only dropping in effectivity after 8 layers compared to 6 on GM soy.
So, a change to non-GM soy makes the herd easier to manage, improves the health of the herd, reduces medicine usage, increases production and is very profitable.
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