Abstract
ABSTRACT Two experiments were done to directly compare the effects of commercially available porcine circovirus type 2 (PCV2) vaccines on growth mortality rate of pigs under field condition in a farm with a history of porcine circovirus disease. In Exp. 1 a total of 1470 pigs were used. Pigs (initially 8.8 kg of BW) within sex (barrow or gilt) were allotted to control or 1 of 2 commercial PCV2 vaccines (1DS; Suvaxyn PCV2 Fort Dodge Animal Health, Fort Dodge, IA, or 2DS; Circumvent PCV, Intervet/Schering-Plough Animal Health, Millsboro, DE). In Exp. 2 a total of 1,993 pigs (25.2 ± 1.24 d of age 7.4 ± 1.70 kg of BW) were allotted within litter and sex to 2 different commercial PCV2 vaccine treatments (BI; CircoFLEX, Boehringer Ingelheim Vetmedica Inc., St. Joseph, MO, or IN; Circumvent PCV, Intervet/Schering-Plough Animal Health). On d 143, the one- 2-dose groups were 3.4 4.6 kg heavier (P
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