How are samples selected for antibiotic/sulfa testing?
• For purposes of this notice and for determining what testing to do, a lot would be considered to include all animals from one fair/show. A lot of animals that appear to be healthy is to be tested in the following manner: Test a minimum of 1 animal if there are 1 to 10 animals in a lot. Test a minimum of 2 animals if there are 11 to 50 animals in a lot. Test a minimum of 3 animals if there are 51 to 100 animals in a lot. Test a minimum of 4 animals if there are more than 100 animals in a lot. Maintain the identity of all tested animals. This is important for tracebacks. If the in-plant residue test is negative, release the carcass. If the in-plant residue test is positive, retain the carcass/product pending laboratory confirmation. • If any animals in the lot appear to be unhealthy, VMOs should: Observe the animals on ante-mortem and post-mortem for symptoms, injection sites, or pathological conditions. For each unhealthy appearing animal, conduct in-plant residue tests, such as Swab
