Summary Feed additives are effective and economical in improving performance and increasing profit in swine production. Antibiotic additives are recommended, particularly for creep, starter and growing rations. Research indicates a response to antibiotics through the entire feeding. Lower levels can be used in finishing rations to reduce cost. Research on antibiotic value in sow rations has not been conclusive.
Antibiotics are particularly effective when sanitation is below normal and stress is above normal.
Use only approved additives at levels recommended. Calculate actual antibiotic levels on an as-fed basis and compare cost. Where on-farm formulations are used, take particular care in mixing to ensure proper distribution of the additive. Observe any special directions, particularly withdrawal requirements. Copyright 1999 University of Missouri.