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Table 5 Characteristics of manure applied in modified plant tests with florfenicol and tylosin tartrate

From: Results of extended plant tests using more realistic exposure scenarios for improving environmental risk assessment of veterinary pharmaceuticals

Parameter Pig manure Cattle manure
Manure characterisation on sampling site
Temperature (°C) 18 (12.5)a 11 (5.8)a
pH 7.7 (7.8) 6.9 (7.6)
Redox potential (mV) −410 (−374) −345 (−362)
Manure characterisation after storage
Temperature (°C) 8.0 8.0
pH 7.6 6.9
Redox potential (mV) −388 −295
Dry matter content (originally) (%) 11.8 (5.0) 9.8 (10.0)
Dry matter content (after processing) (%) 4.8 (5.0) 9.6 (10.0)
Manure characterisation after acclimation
Temperature (°C) 20 20
pH 7.4 6.8
Redox potential (mV) −367 −327
Dry matter content (%) 4.8 9.6
NH4–N (mg/kg fresh weight) 1740 1500
Nonvolatile nitrogen (mg/kg fresh weight) 1258 2102
Total nitrogen (calculated) (mg/kg fresh weight) 2998 3602
Organic carbon (mg/kg fresh weight) 17,380 39,725
Total P content (mg/kg fresh weight) 1320 820
P2O5 equivalents (mg/kg fresh weight) 3024 1877
Total Cu content (mg/kg fresh weight) 14 20
Microbial activity (in 7 days) 36 % glucose degradation (32 % CO2, 4 % CH4) 59 % glucose degradation (50 % CO2, 9 % CH4)
  1. aValues in brackets refer to manure used in the pre-tests