TABLE 2.

Concentrations of antimicrobials in swine manure

AntimicrobialDetection limitConcentration of antimicrobials in manure obtained froma:
LFbOF2OF3
Tiamulin5BDBDBD
MLSB antimicrobials
    Lincomycin24.4 (1.4)BDBD
    Erythromycin A5BDBDBD
    Spiramycin5BDBDBD
    Oleandomycin2BDBDBD
    Tilmicosin5BDBDBD
    Tylosin2BDBDBD
Tetracycline antimicrobials
    Tetracycline119.8 (1.4)60.1 (6.0)BD
    Chlortetracycline15.3 (1.5)723.9 (100.9)BD
    Oxytetracycline12,630.0 (836.0)126.5 (12.5)BD
    Minocycline10BDBDBD
    Anhydrotetracycline2BD20.9 (14.9)BD
    Anhydrochlortetracycline2BDBDBD
    Beta-apo-oxytetracycline21,230.5 (15.5)45.8 (2.8)BD
  • a Values are given in ng of antimicrobial per g of wet manure. Values in parentheses represent the half-range for duplicate measurements. BD, below detection limit.

  • b Antimicrobial concentrations in manure obtained from LF were previously published (41).