WILLINGNESS TO APPROACH BEHAVIOR AND FEED DISAPPEARANCE OF WEANED PIGS FOLLOWING VACCINATION WITH MYCOPLASMA VACCINES

摘要

An adaptation of the animal observation section of the 2003 Swine Welfare Assurance program (SWAP)1 was utilized to evaluate the behavior of weaned pigs following vaccination with Ingelvac~R MycoFLEX (Boehringer Ingelheim Vetmedica, Inc., St Joseph, MO, USA) and Respisure~R'-One (Pfizer Animal Health, Exton, PA). The objective was to determine if field observations of markedly reduced pig activity following vaccination with certain Mycoplasma hyopneumoniae vaccines could be confirmed and quantified by observing postvaccinal pig behavior and feed disappearance.