farm identification
litter identification number
pig identification
daily wt. gain from birth to transfer
the farrowing no. of the sow
serological reac. against A.pleuropneumoniae serotype 2 at age_t
serological reac. against M.hyopneumoniae at age_t
serological reac. against Influenza virus at age_t
serological reac. against PRRS virus at age_t