Which carcass type is exposed to the most microbial contamination during fabrication?

• A. Beef
• B. Poultry
• C. Lamb
• D. Pork

Answer: (B)

Contamination risk during fabrication is highest when the processing steps and the carcass characteristics create more opportunities for bacteria to transfer to and persist on the surface. Poultry stands out because its processing sequence—defeathering, scalding, and evisceration—speeds widespread contact of the carcass with bacteria from the GI tract and from the processing environment. The skin is thin, moist, and has many crevices that trap moisture and harbor bacteria, so any contact with contaminated surfaces or equipment readily spreads microbes across the carcass. Poultry commonly carries organisms like Salmonella and Campylobacter in the GI tract, which can contaminate the carcass during processing and are difficult to remove once transferred. In contrast, beef, lamb, and pork have factors that reduce the extent of surface contamination during fabrication, such as different skin/hide properties and processing steps that limit cross-contamination to the same extent. Therefore, poultry carcasses are exposed to more microbial contamination during fabrication.