Table 5 Anti-P1 antibodies in different categories of pigs from Hangzhou pig farm K
suckling piglets | nursing pigs | fattening pigs | sows | breeding boar | |
|---|---|---|---|---|---|
No. of sera tested | 140 | 145 | 60 | 45 | 15 |
No. of sera positive | 68 | 50 | 11 | 24 | 3 |
% sera positive | 48.6 | 34.5 | 18.3 | 53.3 | 20 |