Question of the Day
Monday February 22nd, 2010The most effective control measures in herds infected with Porcine reproductive and respiratory syndrome (PRRS) virus include:
A - Buy PRRS-negative gilts, test on arrival, segregate 45 d, retest before join herd
B - Cull all sows after first farrowing
C - Maintain therapeutic levels of streptomycin in feed
D - Nursery depopulation, segregated early weaning 12-18 mos after outbreak
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