Scientists argue that because these substances have no effect if swallowed, then they should not pose any health risk to humans eating animals whose flesh has been treated in this way.
We learned a lot about the diet (of the inhabitants), what fish they were eating, what animals they were hunting.
He told the Parliament that there were no health concerns about eating meat from cloned animals.
But instead they are eating pollock and the animals are full before they get enough calories.
"It's much more efficient to obtain protein by eating plants rather than animals, " he said.
Humans may catch the infection from eating undercooked meat from animals harbouring toxoplasma or from contact with cat litter or contaminated soil.
Some of his animals are now eating what he calls "decidedly second grade silage".
Eating undercooked meat from infected animals also can spread the disease.
This is a form of prejudice which unduly favours the human species and seems to justify its members in exploiting, eating and experimenting on other animals for their benefit.
"The whole point of the production method is to create this diseased liver, which is unlike any other form of animal agriculture where you're not just growing animals to be eating, but you're also torturing the animal to grossly enlarge its organs for consumption, " Bryan Pease, an attorney and chairman of the board of the Animal Protection and Rescue League, said.
Visitors to the park are being asked to wash their hands - especially after contact with animals - and before eating.
Gray wolves hunt the large animals like elk that were eating so many plants that some of the fauna was in danger of disappearing.
CNN: Planet in Peril: Environmental Coverage - Special Reports from
The animals were found in mud, eating a rotting pig carcass, the court heard.
He really challenged my conservative ideas and ideology about meat eating by talking about the way we treat animals, and as a conservative that really got to me, and spoke to me.
Posters issued by Birmingham City Council in Sutton Park recommended keeping children and pets away from grazing animals and washing hands, particularly before eating or drinking.
The potential danger of eating horsemeat is thought to centre on drugs given to some of the animals.
It's this interest in meat where it comes from how the animals are treated before they become meat, whether or not we, as human beings, should be eating meat at all, what meat suggests about our own mortality, about - the ethical questions we all or many of us struggle with.
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