Information found at Amazing TailsSalmonella in Cats
Salmonella is a bacteria that may cause food poisoning, gastrointestinal inflammation, or diseases of the genital tract. Raw flesh, especially poultry, can become contaminated on its surfaces with salmonella in the course of its finding its way to the butcher's shelf. People are warned to cook meat to a particular internal temperature because that will kill any salmonella that may be present. Cooking as a form of disease prevention is not a good thing for cats, so you should adopt other practices.
First, the complete elimination of salmonella and other bacteria on raw food is not always necessary--a healthy animal can digest a small amount without getting sick. Second, the incidence of salmonella infections in cats may be negligible; Dr. Pitcairn reports that he saw no problem in 17 years of advocating raw foods. Do be particular about the quality of the meat you buy and the cleanliness of your butcher's work areas. Do disinfect all food preparation surfaces with something like bleach. Do not leave raw meat out of the refrigerator any longer than necessary to serve it. Some people mix 4 drops grapefruit seed extract (a local brand is Nutribiotic) diluted in 6-8 ounces of water with raw meat as a disinfectant; others use one tablespoon of hydrogen peroxide in place of the grapefruit seed extract. However, I rely on freezing to kill salmonella, and I thaw frozen meat in the refrigerator.