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Table 3 List of suggested amendments (black) to the original (gray or crossed out) values in the VMP guideline Table 3 [22], modified with recent data considering the N-reduced feeding strategies

From: Critical discussion of the current environmental risk assessment (ERA) of veterinary medicinal products (VMPs) in the European Union, considering changes in animal husbandry

Animal type Number of animals raised per place per year Average body weight (kg) Nitrogen produced per year per place (kg N y−1) Housing factor Pasture-to-stable ratio
VMP-GLa Chamber of Agriculture NRWb Authors’ suggestion for updated values
Calf (0–6 months) 2 150 10 22 16 1  < 1
Dairy cow 1 550 60 91 75.5 0.5  < 1
Cattle ( > 0.5 y) 1 300 28 70 49 0.5 1
Weaner pig (to 25 kg) 6.9 13.2 2.25 3.8 3.0 1 1
Fattening pig (25–125 kg) 3 65 7.5 12.2 9.9 1 1
Sow (with litter) 1 280 26 27.3 26.7 1 1
Boar (25–125 kg) 1 65 22.1c 22.1c 1 1
Broiler 9 1 0.23 0.39 0.3 1 1
Laying hen 1 1.6 0.35 0.76 0.56 1  < 1
Replacement layer 2.6 0.8 0.24 0.27 0.26 1 1
Broiler breeder 1 1.7 0.69   0.69 1 1
Turkey 2.7 6.5 0.9 1.34 1.12 1 1
Duck 7 1.6 0.41 0.61 0.51 1  < 1
Horse 1 400 35 53.6 44.3 0.5  < 1
Dairy goat 1 40 15.2d 15.2 1  < 1
Dairy sheep 1 70e 20.1f 20.1 1  < 1
Rabbit 8 1.4 0.352 0.7 0.53 1 1
  1. aVMP guideline [22]
  2. bData were obtained from the Chamber of Agriculture of North Rhine-Westphalia [29] unless indicated otherwise
  3. cData were taken from [108,109,110,111]
  4. dData were taken from [112]
  5. eData were taken from Liesegang et al. 2007 [113]
  6. fData were obtained from the Chamber of Agriculture of Lower Saxony [114]