EVALUATION OF TWO COMMERCIAL ONE DOSE MYCOPLASMA HYOPNEUMONIAE BACTERINS USING NEEDLE-FREE AND CONVENTIONAL NEEDLE ADMINISTRATION.

摘要

Mycoplasma hyopneumoniae causes a chronic pneumonia in pigs characterized by coughing, growth reduction, and reduced feed efficiency. The effectiveness of vaccination in reducing the economic impact of mycoplasmal pneumonia has been shown in a numberof studies (1,2). Both single and dual dose vaccination protocols have been used successfully to control the disease (3). Vaccination with M. hyopneumoniae and pseudorabies vaccines using needle free transdermal injection system has been shown to be effective and safe (4). The objectives of this trial were to compare the sero-conversion and daily weight gain of two commercial one-dose mycoplasma hyopneumoniae bacterins in a farrow-to-finish production farm and to evaluate the efficacy of using needle free transdermal injection system (MIT) and conventional needle administration of Sprintvac~R MH.