Experiences with the subclinical control of PCV2. John Waddell, DVM, Sutton Veterinary Clinic. From the World Pork Expo Educational Seminar sessions sponsored by Boehringer Ingelheim Vetmedica, Inc. during the 2009 World Pork Expo in Des Moines, Iowa, USA.

1. FIELD EVALUATION OF INGELVAC CIRCOFLEX ® ON GROWTH PERFORMANCE OF PIGS IN A SUBCLINICAL PCVAD HERD John Waddell, DVM, MBA

9. Serology

11. Results

12. 1 Cull rate based on animals weighing less than 180 lbs on d119 Mortality and cull rate (Fisher's Exact Test) Results Variable Vaccinates Controls P-value Mortality Rate (%) 3.01 3.86 0.22 Cull Rate¹ (%) 1.34 6.69 0.001

13. 1 Probability of a greater F-statistic Least square means for performance data ab Within a row, means without a common superscript letter differ (Student's t, P≤ 0.05) Results Variable Vaccinates Controls P-Value¹ Day 0 weight (lbs) 16.17 16.17 0.97 Day 35 weight (lbs) 50.83 50.79 0.94 Day 119 weight (lbs) 227.25 a 220.86 b 0.0005 Day 0-35 ADG (lbs) 0.99 0.99 0.91 Day 36-119 ADG (lbs) 2.10 a 2.02 b <0.0001 Day 0-119 ADG (lbs) 1.77 a 1.72 b 0.0006 Day 0-119 wt gain (lbs) 210.71 a 204.38 b 0.0006

14. Results Coefficient of Variation (CV) = 10.64(Vaccinated); 12.93 (Non-Vaccinated)

15. PCV2 Quantitative PCR a a a b b b Log Titer Weeks Post-Vaccination