The GM chickens have so far only been bred for research purposes and are not approved for human consumption
GM disease resistant animals 'cover-up' for factory farming
14th January, 2011
The successful breeding of chickens genetically modified not to transmit the bird flu virus could lead to many more GM resistant livestock being produced
Attempts to introduce genetically modify chickens, pigs, sheep and cows to be resistant to diseases like avian influenza (bird flu) would be a 'false solution' claim campaigners.
Researchers have successfully created chickens that can be infected with bird flu but do not transmit the infection to other birds - helping to prevent flu outbreaks spreading within and between poultry flocks.
The chickens have so far only been bred for research purposes but the scientists behind the study say it may soon be possible to genetically modify other farm animals to be resistant to certain diseases. Professor Helen Sang, from The Roslin Institute, who worked on the project with researchers from the University of Cambridge said the findings could quickly be used to breed resistance to swine flu in pigs because of similarities between the diseases.
However, campaigners say GM technological fixes do not tackle the underlying cause of serious disease outbreaks and in the case of bird flu would only be a short-term fix until the virus overcame the technical fix.
'The root cause of the problem is the millions of chickens kept in sheds worldwide, that are often kept alive long enough to reach slaughter age through the use of antibiotics, providing an ideal breeding ground for new, more resistant strains of disease. This GM fantasy simply tries to cover up for flawed farming practice,' said the Soil Association.
Dr Laurence Tiley, from the University of Cambridge, who also worked on the project, insisted the particular technique used to create the GM chicken would make it difficult for the virus to evolve resistance. 'This is quite different from conventional flu vaccines, which need to be updated in the face of virus evolution as they tend only to protect against closely matching strains of virus and do not always prevent spread within a flock,' he said.
Rather than looking for 'magic fixes', Genewatch director Dr Helen Wallace said we should be encourgaing more genetic diversity in chickens and despite the researchers claims, she believed the virus would eventually evolve resistance to the GM chickens.
Study: Suppression of Avian Influenza Transmission in Genetically Modified Chickens
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