In establishments manufacturing medicated feed, the pharmacist or veterinarian in charge or, where applicable, the pharmacist or veterinarian referred to in Article R. 5142-54 ensures that :
1° Only medicated premixes covered by a marketing authorisation or a temporary authorisation for use are used, in accordance with the conditions described in this authorisation;
2° The medicated feed is manufactured from only one medicated premix, with the exception of medicated feeds manufactured, when the veterinary surgeon’s prescription expressly so provides, from more than one medicated premix when no suitable medicated premix is available, within a period of time compatible with therapeutic requirements, for the disease to be treated or prevented in the species in question;
3° The feed used in the manufacture of medicated feed does not contain the same antibiotic or the same coccidiostat as an additive as that used as the active principle in the medicated premix and only feeds or combinations thereof complying with the Community provisions on animal feed are used;
4° The medicated feed :
a) Is subject to regular checks to ensure that it is homogeneous, stable and well preserved, in accordance with the procedures laid down in the decision provided for in Article L. 5142-3;
b) It must be kept for the period covered by the prescription;
5° The composition of the medicated feed allows the prescribed daily dose of medicinal substances to be administered in a quantity of feed corresponding to at least half the daily feed ration of the animals treated and, in the case of ruminants, corresponding to at least half the daily requirements in non-mineral supplementary feed.