Evidence of GMO Harm in Pig Study

from sustainablepulse.com: A groundbreaking new study [1] shows that pigs were harmed by the
consumption of feed containing genetically modified (GM) crops.

GM-fed females had on average a 25% heavier uterus than non-GM-fed
females, a possible indicator of disease that requires further
investigation. Also, the level of severe inflammation in stomachs was
markedly higher in pigs fed on the GM diet. The research results were
striking and statistically significant. 

Lead researcher Dr Judy Carman, adjunct associate professor at Flinders
University, Adelaide, Australia,[2] said: “Our findings are noteworthy
for several reasons. 

“First, we found these results in real on-farm
conditions, not in a laboratory, but with the added benefit of strict
scientific controls that are not normally present on farms.”

“Second, we used pigs. Pigs with these health problems end up in our food supply. We eat them.

“Third, pigs have a similar digestive system to people, so
we need to investigate if people are also getting digestive problems
from eating GM crops.”

“Fourth, we found these adverse effects when we fed the
animals a mixture of crops containing three GM genes and the GM proteins
that these genes produce. Yet no food regulator anywhere in the world
requires a safety assessment for the possible toxic effects of mixtures.
Regulators simply assume that they can’t happen.”

“Our results provide clear evidence that regulators need to
safety assess GM crops containing mixtures of GM genes, regardless of
whether those genes occur in the one GM plant or in a mixture of GM
plants eaten in the same meal, even if regulators have already assessed
GM plants containing single GM genes in the mixture.”

The new study lends scientific credibility to anecdotal
evidence from farmers and veterinarians, who have for some years
reported reproductive and digestive problems in pigs fed on a diet
containing GM soy and corn

Iowa-based farmer and crop and livestock advisor Howard
Vlieger, one of the coordinators of the study, said: “For as long as GM
crops have been in the feed supply, we have seen increasing digestive
and reproductive problems in animals. Now it is scientifically

“In my experience, farmers have found increased production
costs and escalating antibiotic use when feeding GM crops. In some
operations, the livestock death loss is high, and there are unexplained
problems including spontaneous abortions, deformities of new-born
animals, and an overall listlessness and lack of contentment in the

“In some cases, animals eating GM crops are very aggressive.
This is not surprising, given the scale of stomach irritation and
inflammation now documented. I have seen no financial benefit to farmers
who feed GM crops to their animals.”

Gill Rowlands, a farmer based in Pembrokeshire, Wales who is
also a member of the campaign group GM-Free Cymru, said: “This is an
animal welfare issue. Responsible farmers and consumers alike do not
want animals to suffer. We call for the rapid phase-out of all GMOs from
animal feed supplies.”

Claire Robinson of the campaign group GMWatch said: “Several
UK supermarkets recently abandoned their GM-free animal feed policies,
citing lack of availability of non-GM feed. We call on the public to
visit the new citizens’ action website gmoaction.org,
where they can quickly and easily send an email to the supermarkets
asking them to ensure their suppliers secure certified GM-free animal
feed. This will mean placing advance orders for GM-free soy from
countries like Brazil.”
Study details

The research was conducted by collaborating investigators
from two continents and published in the peer-reviewed Journal of
Organic Systems. The feeding study lasted more than five months, the
normal commercial lifespan for a pig, and was conducted in the US. The
pigs were slaughtered at the usual slaughter age of over 5 months, after
eating the diets for their entire commercial lifespan.

168 newly-weaned pigs in a commercial piggery were fed
either a typical diet incorporating GM soy and corn, or else (in the
control group) an equivalent non-GM diet. The pigs were reared under
identical housing and feeding conditions. They were slaughtered over 5
months later, at the usual slaughter age, after eating the diets for
their entire commercial lifespan. They were then autopsied by qualified
veterinarians who worked “blind” – they were not informed which pigs
were fed on the GM diet and which were from the control group.

The GMO feed mix was a commonly used mix. The GM and non-GM
diets contained the same amount of soy and corn, except that the GM diet
contained a mixture of three GM genes and their protein products, while
the control (non-GM) diet had equivalent non-GM ingredients. Of the
three GM proteins in the GM diet, one made a crop resistant to being
sprayed with the herbicide Roundup, while two were insecticides.

Claire Robinson, GMWatch, UK: claire@gmwatch.org To phone within UK: 0752 753 6923. To phone outside UK: +44 752 753 6923

Dr Judy Carman, Adelaide, Australia

Mr Howard Vlieger, Maurice, Iowa


1. Judy A. Carman, Howard R. Vlieger, Larry J. Ver Steeg,
Verlyn E. Sneller, Garth W. Robinson, Catherine A. Clinch-Jones, Julie
I. Haynes, John W. Edwards (2013). A long-term toxicology study on pigs
fed a combined genetically modified (GM) soy and  GM maize diet. Journal
of Organic Systems 8 (1): 38-54. Open access full text: www.organic-systems.org/journal/81/8106.pdf

2. Dr Judy Carman, BSc (Hons) PhD MPH MPHAA; Epidemiologist
and Biochemist; Director, Institute of Health and Environmental
Research, Adelaide, Australia; Adjunct Associate Professor, Health and
the Environment, School of the Environment, Adelaide, Australia

3. For example:

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