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Bovini e mais transgenico
Cari tutti,
alcuni esperti mondiali hanno affermato che non berrebbero latte di
mucche nutrite con mais transgenico Aventis(vedi sotto).
E' bene che il ministero dell'agricoltura sorvegli la situazione
dell'alimentazione bovina in Italia.
Saluti,
Alessandro Gimona
----------------------------------------------------
TOP SCIENTISTS HIT OUT AT GM SAFETY TESTS
18 October 2000
FoE Press Release
"I wouldn't drink milk from cows fed GM maize says expert A
leading UK
animal scientist said today that he would not drink milk from
cows fed the
GM maize that is currently being scrutinised at a government
public hearing.
Professor Bob Orskov OBE , Director of the International Feed
Resource Unit
in Aberdeen today appeared as an expert witness for Friends of
the Earth at
the national seed list hearing in London. The hearing is
considering
objections to a government proposal to allow Chardon LL, the
first GM maize
to be licensed for sale in the UK. He believes that "The
scientific case put
forward for this GM maize is not adequate" and says that "if
the GM maize
was approved for commercial growing in the UK then people would
be justified
in turning their back on consuming milk derived from it... As a
scientist I
wouldn't drink milk from cows fed GM maize with the present
state of
knowledge ."
Professor Orskov's fears were also shared by another eminent
scientist
giving evidence today. Dr Vyvyan Howard , Head of the Foetal
and Infant
Toxico-Pathology Group at the University of Liverpool, today
said "my
interpretation is that this GM maize has not been tested
thoroughly ".
At today's hearing, safety data presented by Aventis, the
biotech firm that
owns the maize, was heavily criticised. The GM maize has not
been tested on
cattle, even though it is intended for their use. Instead a
protein from
oilseed rape - which, say Aventis, is the same as the one in
the GM maize -
was fed to rats over a two week period. The maize grain was
also fed to
broiler chickens for 42 days, though these were for general
nutritional
tests and not proper toxicological testing. Chickens and rats
only have one
stomach whereas cows (ruminants) have four.
Professor Orskov , one of the country's leading experts on
ruminant
nutrition is adamant that the GM maize should be thoroughly
tested on cattle
before being introduced commercially as animal feed. He said:
" The scientific case put forward for this GM maize is not
adequate.
Chemical analyses of the kind reported cannot identity
potential problems.
We need to carry out proper, long-term tests both on the effect
of the maize
silage for the microbes in the stomach of the ruminants which
digest the
feed and on the host animals. This has not been done .
"There is also a serious problem of perception by the consuming
public. Since adults do not have a requirement for milk they
could switch to other foods. Aventis needs to pay
attention to this. If the GM maize was approved for commercial
growing in
the UK then people would be justified in turning their back on
consuming
milk derived from it. This would have a disastrous effect on
our dairy
industry. As a scientist I wouldn't drink milk from cows fed GM
maize with
the present state of knowledge. I have in my brief report
stated the minimum
amount of information required before it could be accepted for
growing in
the UK. And even if it could be scientifically proven to be
harmless there
may still be a problem of consumer perception. The existing
hurry seems to
be supply pushed rather than demand led. "
Dr Vyvyan Howard is also critical of safety tests on the GM
maize. He
dismisses claims by Aventis that some of the safety tests are
not needed
because the GM maize is not " materially different " from
conventional
varieties. After analysing Aventis' limited safety data, Dr
Howard concluded
that there were statistically significant differences in the
composition of
fat, protein and fibre between the GM maize silage and the
non-GM
counterparts. Statistically significant differences in fat and
carbohydrate
values of the GM and non-GM grain samples were also discovered.
He said:
" My interpretation is that this GM maize has not been tested
thoroughly.
They have taken a protein from another plant and fed it to
rats. I do not
feel this can be used as a basis for making judgements about
the safety of
this GM maize with respect to cattle. What will happen if the
maize is fed
to cows as part of their diet? This is the question that needs
to answered.
The experiments carried out by Aventis are just a surrogate for
a
well-designed feeding trials, which would be both relevant and
informative."
Adrian Bebb, Food Campaigner for Friends of the Earth said:
The public should be concerned about these shocking
revelations. Despite
assurances from both Government and industry the reality is
that the safety
of these GM crops has not been properly tested. If it wasn't so
serious it
would be laughable. It is clear that the Government has not
learnt anything
from the BSE fiasco. Surely this GM maize cannot now be added
to the
national seed list and be sold to farmers .
In April the Government announced its intention to allow
Aventis' GM maize,
Chardon LL which has been genetically engineered to be
resistant to Aventis'
own herbicide, to be added to the national seed list. This is
the final
legal barrier before a GM seed can be sold to farmers. This
would have been
the first GM crop to have been added to the list. However, FOE
discovered a
little-known law which gave the public the right to appeal
against the
decision. Sixty seven groups and individuals have paid £60 to
have their
objections heard in public, with hundreds more filing written
objections
(which cost £30). The National Seed List hearing started on 2
October and is
expected to last about 9 weeks. Aventis is refusing to produce
any evidence
at the hearing.
ENDS
Witnesses' evidence is available from FOE.
Dr C V Howard is a Senior Lecturer and Head of the Fetal and
Infant
Toxico-Pathology Group at the University of Liverpool. He is
also a Fellow
of the Royal College of Pathologists and was previously General
Editor of
the Journal of Microscopy, an internationally recognised
publication and the
official journal of the Royal Microscopical Society.
Professor Orskov is the Director of the International Feed
Resource Unit.
He is a leading expert on ruminant nutrition publishing 4 books
and is the
author or co-author of more than 500 publications.
Alessandro Gimona
agimona@libero.it