COMPARATIVE FIELD EFFICACY OF INGELVAC® PRRS ATP VERSUS INGELVAC® PRRS MLV IN GROWING PIGS EXPOSED TO HETEROLOGOUS FIELD VIRUS.

Introduction The objective was to compare the efficacy of a full dose of Ingelvac® PRRS ATP vs. a full dose of Ingelvac® PRRS MLV given within 1-2 weeks post weaning for protection against the respiratory form of PRRSv challenge in the nursery-finishing phase of production. The efficacy of the two treatment groups was measured by difference in barn close out data. The primary parameter measured was finishing mortality. Performance data for cull rates, total mortality and cull rate (pigs not going to primary market), average daily gain (ADG) and feed efficiency (FE) were also measured.