Which of the following is NOT a recommended control or prevention measure for Salmonella in poultry?

• A. Vaccination for specific serovars; management of carriers and environment; milk replacer; isolate clinically infected animals.
• B. Vaccination for specific serovars and management of carriers.
• C. Routine antibiotic prophylaxis in all birds.
• D. Isolating clinically infected animals.

Answer: (C)

Preventing Salmonella in poultry relies on reducing colonization and shedding through targeted vaccination, identifying and managing carriers, and maintaining strict biosecurity and isolation of sick birds. Vaccination against specific serovars helps lower the likelihood of these strains establishing in the flock, while actively managing carriers and the environment cuts down on persistent contamination and transmission. Isolating clinically infected animals prevents spread to healthy birds. In contrast, routine antibiotic prophylaxis in all birds is not recommended because it can mask disease, fail to prevent infection, promote antimicrobial resistance, and risk residues in meat or eggs. Antibiotics should be reserved for targeted treatment under veterinary guidance, not used as blanket prophylaxis.