"These people were processing the flesh of humans with exactly the same expertise that they used to process the flesh of animals," said Professor Chris Stringer of the Natural History Museum in London.
This could have triggered the release of poisonous hydrogen sulphide gas which would have added to the stress of land animals, said Professor Dan Rothman of MIT, the lead author of the research.
Other ideas include a one-child policy for domestic animals, which Professor Vale called an "excellent idea".
In written testimony to the subcommittee, Temple Grandin, an expert on animal welfare and an animal science professor at Colorado State University, said inspectors needed more training.
The three new movies would seem to have little in common: a romantic comedy about Upper West Side singles, a biopic about a noted animal science professor, and an animated film about an extended pen-pal relationship.
Our current formulation is showing wonderful immune response in animal tests," Professor Arntzen said.
Robert Baker, an animal science professor, brought the recipe with him when he joined the Cornell University faculty in 1957 on a mission to promote chicken consumption.
But with no natural enemies and with their meat no longer being exported, "donkeys are reproducing like rabbits," warned Mr. Viana Nobre, the head of the breeders' association and a retired animal husbandry professor at the Federal University of Rio Grande do Norte.
The exercise — under the supervision of Michael Darree, a poultry specialist and University of Connecticut animal science professor — is part of "Egg and Seed," a class combining biology, ecology and literature that reflects the educational philosophy called active, authentic learning.
As a role, it is a full meal, especially since it focuses on Ms. Grandin's life in the '60s and '70s, before she became a famous author and animal sciences professor at Colorado State University.
