Recently, we had the news that cloned beef had entered our food supply. Here's more from piglipstick (a blog you should be reading if you're not already):
"We already know that cloned beef has entered the food supply both in the United States (http://www.naturalnews.com/023718_f…) and the UK (http://www.naturalnews.com/029411_c…). Now, thanks to revelations from JR Simplot, a U.S. company specializing in the cloning of cows for beef production, we’re learning that dead cows are cloned to produce the next generation of beef cattle.
For the rest of the story, and other current news items (like HAARP's manipulation of flooding, etc. over the globe) go topiglipstick.
This DNA is then used to clone new cows who are fed, raised and slaughtered to see how their flesh steaks taste. This cycle is repeated through multiple generations in order to “evolve” cow clones with great-tasting flesh.
In looking for vintage ads to go with this item, I found this 1955 item from Popular Mechanics about an electric device attached to cattle to increase meat and milk deliciousness by monitoring what grasses the cattle like to eat, etc.