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DETERMINATION OF AMINO ACIDS IN ANIMAL FEED Development of a Community Method and Reference Materials

Objective



The efficiency of animal feed, especially for intensive farming, depends heavily on the contents of several amino acids (methionine, threonine, cystine, lysine and tryptophan).
These compounds are commonly added to low grade protein waste materials to produce feed with sufficient nutritive value. Community legislation (Directive 77/101/EEC and 79/373/EEC) obliges declaration of certain of these compounds in feeds for specified animals and lays down the acceptable tolerances for the accuracy of the declaration. However, several Member States have indicated that they will refuse further development of this legislation until a Community method is adopted.
The objective is therefore to develop a Community method and reference feeds to assure its correct application.

STATUS

After two intercomparisons, it has been shown that there were no detectable differences in the results of 14 laboratories even though the proposed candidate method (based on ion-exchange chromatography) allowed four variations (open and closed vessel, HBr and metabisulphite oxidation). The method will be recommended as a candidate Community method.
The preparation of reference materials (mixed pig feed, low fat fish meal, soya bean meal, skim milk powder and a calibration solution) has been completed and certification will be undertaken in 1992.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Agrilab
Address

Antwerpen
Belgium

Participants (24)

CIVO-TNO Institute
Netherlands
Address

Zeist
Central Laboratoriet
Denmark
Address

Tjele
DEUTSCHES INSTITUT FUER LEBENSMITTELTECHNIK E.V.
Germany
Address
Professor Von Klitzing Strasse 7
49610 Quakenbrueck
Degussa AG
Germany
Address
Rodenbacher Chausee 4
63403 Hanau
Dipartimento di Science Zootecniche dell' Università
Italy
Address

50100 Firenze
Faculte des Sciences Agronomiques de l'Etat
Belgium
Address

Gembloux
Finnish Customs Laboratory
Finland
Address

Espoo
Hewlett-Packard GmbH
Germany
Address
Hewlett-packard-straße 8
76337 Waldbronn
I.V.V.O.
Netherlands
Address

Lelystad
Istituto Sperimentale per la Zootecnia
Italy
Address

Roma
LUDWIG-MAXIMILIANS UNIVERSITY OF MUNICH
Germany
Address
Geschwister-scholl-platz 1
80539 Muenchen
Laboratoire Interrégional du DGCCRF
France
Address
26 Avenue Du Coëtlogon
35000 Rennes
Laboratorio Arbitral
Spain
Address

Madrid
Laboratorio Nacional de Engenharia e Technologia Industrial
Portugal
Address

Lisboa
Laboratory of the Government Chemist (LGC)
United Kingdom
Address
Queen's Road
TW11 0LY Teddington
Landwirtschaftliche Untersuchungs- und Forschungsanstalt
Germany
Address
Gutenbergstraße 75-77
24116 Kiel
National Laboratory for Agricultural Chemistry
Sweden
Address

Uppsala
RADAS
Belgium
Address

Deinze
Rijksontledingslaboratorium
Belgium
Address

Gentbrugge
Service Technique a l'Agriculture
Luxembourg
Address

Ettelbrueck
State Laboratory
Ireland
Address

Dublin
Statens Foderstofkontrol
Denmark
Address

Lyngby
UK, Ministry of Agriculture
Greece
Address

Athens
University Uppsala
Sweden
Address

Uppsala