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. 2023 Aug 7;21(8):e08190. doi: 10.2903/j.efsa.2023.8190
Animal commodity Residues at the closest feeding level (a) (mg/kg) Estimated value at 1 N MRL proposal (mg/kg)
Mean Highest STMR (b) (mg/kg) HR (c) (mg/kg)

Cattle (all)

Closest feeding level (3.97 mg/kg bw; 0.5 N rate (Dairy cattle)) (d)

Muscle 0.03 0.03 0.03 0.03 0.03
Fat 0.13 0.20 0.29 0.49 0.5
Liver 0.93 0.94 1.78 1.89 2
Kidney 0.81 0.90 1.56 1.80 2

Cattle (dairy only)

Closest feeding level (3.97 mg/kg bw; 0.5 N rate) (d)

Milk (e) 0.11 0.14 0.21 0.22 0.3

Sheep (all) (f)

Closest feeding level (3.97 mg/kg bw; 0.5 N rate (Ram/Ewe)) (d)

Muscle 0.03 0.03 0.03 0.03 0.03
Fat 0.13 0.20 0.37 0.61 0.6
Liver 0.93 0.94 2.19 2.29 3
Kidney 0.81 0.90 1.92 2.18 3

Sheep (ewe only) (f)

Closest feeding level (3.97 mg/kg bw; 0.5 N rate) (d)

Milk (d) 0.11 0.14 0.26 0.27 0.3

Swine (all) (f)

Closest feeding level (3.97 mg/kg bw; 0.8 N rate (Finishing)) (d)

Muscle 0.03 0.03 0.03 0.03 0.03
Fat 0.13 0.20 0.17 0.31 0.3
Liver 0.93 0.94 1.17 1.29 1.5
Kidney 0.81 0.90 1.03 1.23 1.5

Poultry (all)

Closest feeding level (8.1 mg/kg bw; 0.9 N rate (Broiler)) (d)

Muscle 0.21 0.25 0.26 0.30 0.3
Fat 1.06 1.10 1.29 1.36 1.5
Liver 0.76 0.90 0.91 1.10 1.5

Poultry (layer only)

Closest feeding level (8.1 mg/kg bw; 1.2 N rate) (d)

Eggs (g) 0.32 0.37 0.28 0.34 0.4

bw: body weight; STMR: supervised trials median residue; HR: highest residue.

(a)

Total residues are expressed considering the residue definition for risk assessment in animal commodities (i.e. sum of 1,4‐dimethylnaphthalene and its metabolite M23 free and conjugated, expressed as 1,4‐dimethylnaphthalene). For each analyte LOQ is 0.01 mg/kg. The combined LOQ for the RD‐RA is 0.0248 mg/kg.

(b)

The median residues were recalculated at the 1 N rate for the median dietary burden.

(c)

The median residue level in milk and the highest residue levels in eggs and tissues were recalculated at the 1 N rate for the maximum dietary burden.

(d)

Closest feeding level and N dose rate related to the maximum dietary burden.

(e)

For milk, mean was derived from samplings performed from day −1 to day 28 (daily mean of 6 cows).

(f)

Since extrapolation from cattle to other ruminants and swine is acceptable, results of the livestock feeding study on ruminants were relied upon to derive the MRL and risk assessment values in sheep and swine.

(g)

For eggs, mean and highest residues were derived from samplings performed from day −1 to day 28 (daily mean or daily highest of 12 laying hens).