Abstract
A total of 360 weanling barrows (PIC 1050, 21 d of age and 13.0 lb) were used in a 35-d study to evaluate the effects of porcine circovirus type 2 (PCV2) and Mycoplasma hyopneumoniae (M. hyo) vaccines on nursery pig growth performance. Two commercial PCV2 vaccines were evaluated in this study: (1) a 2-dose product, Circumvent PCV (Circumvent; Intervet/Schering-Plough Animal Health, Millsboro, DE) and (2) a 1-dose product, Ingelvac CircoFLEX (CircoFLEX; Boehringer Ingelheim Vetmedica, Inc, St. Joseph, MO). For the M. hyo vaccine, RespiSure (Pfizer Animal Health, New York, NY), a single 2-dose product, was used. At weaning (d 0), pens of pigs were blocked by average pig weight and randomly allotted to 1 of 6 treatments in a 3 × 2 factorial arrangement composed of a combination of PCV2 vaccine (Circumvent, CircoFLEX, or non-PCV2-vaccinated control) and M. hyo vaccine (RespiSure or non-M. hyo-vaccinated control). There were 5 pigs per pen and 12 pens per PCV2 × M. hyo vaccine treatment. All vaccines were administered according to label directions—CircoFLEX at weaning and Circumvent and RespiSure at weaning and 21 d later. Common diets were fed by phase to all pigs.
Highlights
Porcine circovirus type 2 (PCV2) and Mycoplasma hyopneumoniae (M. hyo) vaccines are routinely administered to pigs during the nursery phase to lessen the severity of disease during the finishing period
A total of 360 weanling barrows (PIC 1050, 21 d of age and 13.0 lb) were used in a 35-d study to evaluate the effects of porcine circovirus type 2 (PCV2) and Mycoplasma hyopneumoniae (M. hyo) vaccines on nursery pig growth performance
Two commercial PCV2 vaccines were evaluated in this study: (1) a 2-dose product, Circumvent PCV (Circumvent; Intervet/Schering-Plough Animal Health, Millsboro, DE) and (2) a 1-dose product, Ingelvac CircoFLEX
Summary
Porcine circovirus type 2 (PCV2) and Mycoplasma hyopneumoniae (M. hyo) vaccines are routinely administered to pigs during the nursery phase to lessen the severity of disease during the finishing period. Vaccines for both of these pathogens have been shown to reduce severity of disease in the finishing phase, the impact on the nursery pig has not been well characterized. Speculation that nursery pig vaccines may contribute to this problem prompted an initial study at Kansas State University (K-State) to investigate the role of PCV2 and M. hyo vaccines in combination on growth performance (Kane et al, 20082). The objective of this study was to determine effects of 2 commercial PCV2 vaccines and a M. hyo vaccine on nursery pig growth performance
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