TABLE 1

Swine serum specimens studied

Pig growth stageNo. of serum specimens collected in:
July 2012November 2012
Growing pig (days old)
    3056
    6056
    9066
    12066
    15056
    18056
    21056
Gilt5
Farrowing sow
    Once55
    twice55
    3 times55
    4 times55