 Tiamutin medication of layers and breeders for 3 days at 0.0125 and 0.025% in the drinking water or 200 and 400ppm in feed results in Tiamutin penetration into the eggs at levels in excess of most strains of
M. gallisepticum and M. synoviae, for up to 9 days after treatment. This characteristic is particularly important for breeder layers in mycoplasma control programmes. Tiamutin will protect the bird, the egg and the chick.
Although these levels are effective in inhibiting mycoplasma they have been shown to be below the EU maximum residue limit (MRL) of 1000µg/kg for eggs, by validated chemical assay of tiamulin, resulting in a zero day withdrawal time for eggs
(see withdrawal periods).
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