WASSERLOESLICHE ZUBEREITUNGEN VON COCCIDIOSTATICA

Active substance preparations characterised by a) up to 10000 ppm, based on the weight of the preparation, of one or more coccidiostats of the general formulae I and II in which R , R and R' are, independently of one another, hydrogen or C1-C4-alkyl, R is together with R a double bond or independently thereof hydrogen or C1-C4-alkyl, R is together with R a double bond or independently thereof hydrogen or C1-C4-alkyl, W is oxygen or sulphur, X is, in each case independently of one another, halogen such as fluorine, chlorine and bromine, C1-C4-alkyl, trifluoromethyl, cyano, thiocyanato, C1-C4-alkylthio, nitro or C1-C4-alkoxy, n is 0, 1, 2, 3 or 4, preferably 0 to 2, Y is hydrogen, C1-C6-alkyl, C1-C6-halogenoalkyl, benzyl, phenyl or phenyl which is substituted by at least one radical from the group comprising alkyl, alkoxy, halogenoalkyl, halogenoalkoxy, halogen, alkylthio, alkylsulphinyl, alkylsulphonyl, halogenoalkylthio, halogenoalkylsulphinyl and halogenoalkylsulphonyl, each with 1 to 4 C atoms in the alkyl radical, or is thienyl or halothienyl and Z is a direct bond or a divalent group of the formula O, S, SO, SO2, NH, NR in which R is hydrogen or C1-C4-alkyl, or C(CN)(R) in which R is hydrogen or methyl, b) a water-miscible, physiologically acceptable, anionic or non-ionic surfactant or a mixture of a plurality of these surfactants and c) 0 to 80% by weight, based on the preparation, of a physiologically acceptable, water-soluble organic solvent and d) 0 to 70% by weight, based on the preparation, of water, are suitable, by reason of their solubility in water, for the treatment of coccidiosis in livestock via the drinking water thereof.