Original scientific paper

DETERMINATION OF ACTIVE SUBSTANCES IN MEDICATED FEEDSTUFFS

Monika Przeniosło-Siwczyńska ; National Veterinary Research Institute, Pulawy, Poland
Krzysztof Kwiatek ; National Veterinary Research Institute, Pulawy, Poland

Abstract

From January 1, 2006 antibiotics, other than coccidiostats and histomonostats, may be used only in medicated feedstuffs. Medicated feedstuffs are feedstuffs containing an authorized medicated premix or an authorized intermediate product and they are intended to be fed to animals without any further processing. As a result of this, specific tests are required to study the quality of the medicated premixes and feedstuffs. The conditions for the production, marketing and use of medicated feedstuffs are clearly specified. The active substance content in medicated feedstuffs is determined in a description. The official control includes the quantitative determination of the active substance content in 1 g medicated feedstuff and homogeneity of this kind of feed. The criterion for the assessment of homogeneity is the coefficient of variation (CV) < 15%. The official control of medicated feedstuffs includes the microbiological analysis of the following substances; amoxicillin, chlortetracycline, doxycycline, lincomycin, tylosin and tiamulin. Medicated feeds, intermediate products, medicated premixes and cleaning mixtures were analysed. In four years (2006 – 2009) 1454 samples were examined. Among the samples of medicated feedstuffs 116 (9.75%) were non-compliant with the declaration or the homogeneity was incorrect – value of the CV was > 15%. Of the 134 cleaning mixtures 34 (25.37%) ware positive, it means that they contained residues of an active substance used in medicated feedstuff.

Keywords

active substances; medicated feedstuffs

Hrčak ID:

60614

URI

https://hrcak.srce.hr/60614

Publication date:

15.8.2010.

Article data in other languages: croatian

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