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Bulletin No. 19 - Fall 2004
18th IPVS Congress, Hamburg, Germany, 2004Mycoplasma hyopneumoniae
UTRERA V, ANTILLANO C, CANO JP, CARRILLO R, DELCASTILLO S, FUENTES D, HEREDIA C, PIETERS M, ROJAS L, VILLALOBOS J, URRIOLA P, TERAN E
The use of serum profiles to estimate the age of vaccination against Mycoplasma hyopneumoniae
Proceedings of the 18th IPVS Congress, Hamburg, Germany, 2004 - Volume 1:433
The level of maternal antibody is known to interfere with active immunization against Mycoplasma hyopneumoniae. An ELISA Tween 20 S/P value of 1.42 has been previously recommended as a cutoff value below which vaccination against Mycoplasma hyopneumoniae should not be impaired by maternal antibodies. The efficacy of vaccination programs abiding by this cutoff value was evaluated in three farrow-to-finish operations previously diagnosed with enzootic pneumonia, using average lung lesions at slaughter, average days to market and cough index as parameters of efficacy of vaccination. The results of this study confirm that the efficacy of vaccination against Mycoplasma hyopneumoniae is significantly improved when applied to piglets once antibody levels detected by ELISA Tween 20 are below S/P values of 1.42.
