Cattle that are grass-fed and free of antibiotics and growth hormones are seen at Kookoolan Farm in Yamhill, Ore.
May 20, 2015 The Food and Drug Administration wants to know which farm animals are getting treated most heavily. But the FDA's proposal still falls short of the best European data practices.
The European Union banned the use of antibiotics to boost animals' growth in 2006. At first, the ban had little effect on the amount of drugs given to pigs.
March 20, 2015 For the first time, scientists have estimated the amount of antibiotics pigs, chickens and cows consume globally — and how fast consumption is growing. Which country uses the most drugs on farms?
FDA tests have turned up residues suggesting a few dairy farmers are illegally using antibiotics.
March 8, 2015 Random tests of milk reveal that a few farmers are treating dairy cows with antibiotics that aren't supposed to be used on them. The FDA is now considering tighter controls to prevent such practices.
Within a day after chicks hatch, they are sorted by sex and shipped to farms. Some will be treated with antibiotics; others will not.
Dan Charles /NPR
September 22, 2014 What does it take to get chickens off antibiotics? According to Perdue Farms, an added dose of the "good bacteria" known as probiotics can help crowd out the harmful microbes that make a chicken sick.
Do these chickens look medicated?
February 19, 2014 Chick-fil-A's plan to ditch antibiotics in its birds is part of a small but growing trend. Driving the growth is concern about the risks associated with routine use of antibiotics in farm animals.
Beef cattle in a barn on the Larson Farms feedlot in Maple Park, Ill.
January 28, 2014 Documents show that Food and Drug Administration scientists allowed 18 drugs to be sold to farmers despite a risk to human health.
Piglets in a pen on a hog farm in Frankenstein, Mo.
August 29, 2013 No one knows exactly how farmers use antibiotics. Many public health experts say the government should collect and publish detailed information because antibiotic-resistant bacteria are an increasingly urgent problem. But many farm groups are opposed.
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Craig Rowles tends to his pigs in a barn near Carroll, Iowa.
July 11, 2013 Farmers give antibiotics routinely to pigs, beef cattle and poultry. They say the drugs help keep animals healthy and get them to market faster. Others say this practice practically guarantees that bacteria will develop resistance to these antibiotics more quickly, endangering human lives and the long-term viability of the drugs.
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Organic apples hang from trees in an orchard in Forest Range, Adelaide Hills, South Australia.
April 10, 2013 Both fruits are vulnerable to a nasty disease called fire blight that can devastate orchards. So organic labeling standards allow for antibiotics to be used on apple and pear trees. That exemption is set to end in 2014 — but growers say they need a little more time.
Pigs at a farm in Beijing peer out at visitors. Half of all the pigs in the world live in China.
Ng Han Guan/AP
February 11, 2013 Manure from pig farms doesn't just contain residues of antibiotics used in livestock. It also carries high concentrations of antibiotic-resistant bacteria, a new study of Chinese pig farms finds. And researchers say "it's a global problem."
October 2, 2012 Consumer group puts pressure on hip grocery retailer Trader Joe's to sell only antibiotic-free meat. The group says if Trader Joe's makes this transition, it could encourage other grocers to follow suit.
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