The company said earlier this month KFC same-store sales in China fell by 16% at a time when nervous consumers have shunned chicken, despite government advice that cooked meat is safe.
She added that the FSA would not allow a slaughter house to operate if it was not "following the proper procedures to ensure the meat they process is safe".
"The industry's shift away from the use of antibiotics for growth promotion at the request of the (FDA) last year should provide further reassurance that we are committed to meeting government and customer expectations and to producing meat and poultry products that are as safe as we can make them, " said spokeswoman Janet Riley.
Although its opponents feel irradiating meat is dangerous, "The CDC feels that the irradiation of foods is both effective and safe, " said Dr. David Satcher of the CDC.