Study shows pig health damaged by genetically modified feed

18By Carey Gillam of Reuters
MSN News – Pigs fed a diet of only genetically modified (GM) grain showed markedly higher stomach inflammation than pigs who dined on conventional feed, according to a new study by a team of Australian scientists and U.S. researchers.
The study adds to an intensifying public debate over the impact of genetically modified crops, which are widely used by U.S. and many other countries around the world.
The study was published in the June issue of the peer-reviewed Journal of Organic Systems by researchers from Australia, who worked with two veterinarians and a farmer in Iowa to study the U.S. pigs.
Lead researcher Judy Carman is an epidemiologist and biochemist, and also the director of the Institute of Health and Environmental Research in Adelaide, Australia.
The study was conducted over 22.7 weeks using 168 newly weaned pigs in a commercial U.S. piggery.
One group of 84 ate a diet that incorporated genetically modified soy and corn, and the other group of 84 pigs ate an equivalent non-GM diet. The corn and soy feed was obtained from commercial suppliers, the study said, and the pigs were reared under identical housing and feeding conditions. The pigs were then slaughtered roughly five months later and autopsied by veterinarians who were not informed which pigs were fed on the GM diet and which were from the control group.
Researchers said there were no differences seen between pigs fed the GM and non-GM diets for feed intake, weight gain, mortality, and routine blood biochemistry measurements.
But those pigs that ate the GM diet had a significantly higher rate of severe stomach inflammation — 32 percent of GM-fed pigs compared to 12 percent of non-GM-fed pigs. The inflammation was worse in GM-fed males compared to non-GM fed males by a factor of 4.0, and GM-fed females compared to non-GM-fed females by a factor of 2.2. Also, female GM-fed pigs had uteri that were 25 percent heavier than non-GM fed pigs, the study said.
The researchers said more long-term animal feeding studies need to be done.
Biotech seeds are genetically altered to grow into plants that tolerate treatments of herbicide and resist pests, making producing crops easier for farmers. Critics have argued for years that the DNA changes made to the transgenic plants engineer novel proteins that can be causing the digestive problems in animals and possibly in humans.
The companies that develop these transgenic crops, using DNA from other bacteria and other species, assert they are more than proven safe over their use since 1996.
CropLife International, a global federation representing the plant science industry, said more than 150 scientific studies have been done on animals fed biotech crops and to date, there is no scientific evidence of any detrimental impact.

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2 responses to “Study shows pig health damaged by genetically modified feed

  1. In this report, investigators had seen higher rates of intestinal problems in pigs fed a GM diet, including inflammation of the stomach and small intestine, stomach ulcers, a thinning of intestinal walls and an increase in “haemorrhagic bowel disease”, where a pig can rapidly “bleed-out” from their bowel and die. They weren’t able to look inside the intestines, due to the amount of food in them, but were able to look inside the stomach. They found that the level of severe inflammation in stomachs was markedly higher in pigs fed the GM diet. Pigs on the GM diet were 2.6 times more likely to get severe stomach inflammation than control pigs. Comparison pictures from the report: Studies have also “graphed” the rise of Inflammable Bowel Disease in humans with the parallel rise of GMO soy and corn consumption.

  2. Published in the Organic Systems Journal , the peer-reviewed study analyzed 168 just-weaned commercial pigs for 22.7 weeks, or just over 5 months. Half of the pigs were fed popular GM corn and soy varieties, while the other half were fed the same foods, only not GM (though it must have been difficult to find non-GM corn and soy since the vast majority of these two crops are indeed GM).

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