[QUOTE=Simkie;7703600]
Are you kidding me? Of course they work on microbes. Subtheraputic levels of antibiotics are generally believed to increase feed availability in food animals by killing off the bacteria in the gut. The bacteria in the gut isn’t eating, so the animal has more calories to use to grow.
This is a huge, ridiculous problem leading to antibiotic resistance in people and most other first world countries have banned the use of this practice.
It’s one thing to give a sick animal medicine so it can get better. It’s a whole different, dangerous, ballpark to give food animals antibiotics regularly to make them gain more.
I agree with TBROCKS that I have ZERO desire to eat an animal raised in this manner, or contribute to the industry that thinks this is okay.[/QUOTE]
This was published in 2009:
http://beef.unl.edu/cattleproduction/antibiotics2009
If you have a sick calf, just as you have sick kids, you treat them, is the humane thing to do.
Those that don’t treat them so they can sell under the “no antibiotics ever” label are not doing right for their cattle.
To treat your sick cattle, you use approved medications and protocols to insure there won’t be residues.
Meat is tested for that continuously when slaughtered.
Just as you or your kids take antibiotics when needed, so do cattle should have them when needed.
Just as for you, antibiotics do their thing and are eliminated after so long from your body and that of cattle.
Nothing objectionable to either practice, when done appropriately.
There is much overuse of antibiotics in human medicine, that is where so much of the resistance comes from in human medicine.
It is the nature of all organisms to develop, eventually, immunity to certain kinds of antibiotics.
All that use those, in humans and animals, know that and follow protocols to guard against it, best that can be done, but it is the nature of the beast that eventually there will be some resistant bacteria.
The FDA determines which antibiotics can be use in animals and how.
Vets go to school to learn how to, when and why to use those, in your dog, horse and cows too.
Some of those antibiotics used on cattle for enhanced performance are not used against bacteria and some that are generally are not used in human medicine.
All this is not one size fits all, lets just ban them all so there is never any resistance created.