CHICAGO (Reuters) - Supplies of chicken raised without antibiotics are outstripping demand, a major U.S. poultry producer said on Tuesday, a sign of overproduction that could eat into processors’ profits.

Large chicken and restaurant companies, including Tyson Foods Inc and McDonald’s Corp, have raced to cut antibiotics from poultry supplies as public health experts have warned about the link between use of the drugs in farms and the rise of drug-resistant bacteria.