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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.

Topic(s)

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Call for proposal

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Coordinator

Agrilab
Address

Antwerpen
Belgium

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Participants (24)

CIVO-TNO Institute
Netherlands
Address

Zeist

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Central Laboratoriet
Denmark
Address

Tjele

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DEUTSCHES INSTITUT FUER LEBENSMITTELTECHNIK E.V.
Germany
Address
Professor Von Klitzing Strasse 7
49610 Quakenbrueck

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Degussa AG
Germany
Address
Rodenbacher Chausee 4
63403 Hanau

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Dipartimento di Science Zootecniche dell' Università
Italy
Address

50100 Firenze

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Faculte des Sciences Agronomiques de l'Etat
Belgium
Address

Gembloux

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Finnish Customs Laboratory
Finland
Address

Espoo

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Hewlett-Packard GmbH
Germany
Address
Hewlett-packard-straße 8
76337 Waldbronn

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I.V.V.O.
Netherlands
Address

Lelystad

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Istituto Sperimentale per la Zootecnia
Italy
Address

Roma

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LUDWIG-MAXIMILIANS UNIVERSITY OF MUNICH
Germany
Address
Geschwister-scholl-platz 1
80539 Muenchen

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Laboratoire Interrégional du DGCCRF
France
Address
26 Avenue Du Coëtlogon
35000 Rennes

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Laboratorio Arbitral
Spain
Address

Madrid

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Laboratorio Nacional de Engenharia e Technologia Industrial
Portugal
Address

Lisboa

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Laboratory of the Government Chemist (LGC)
United Kingdom
Address
Queen's Road
TW11 0LY Teddington

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Landwirtschaftliche Untersuchungs- und Forschungsanstalt
Germany
Address
Gutenbergstraße 75-77
24116 Kiel

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National Laboratory for Agricultural Chemistry
Sweden
Address

Uppsala

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RADAS
Belgium
Address

Deinze

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Rijksontledingslaboratorium
Belgium
Address

Gentbrugge

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Service Technique a l'Agriculture
Luxembourg
Address

Ettelbrueck

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State Laboratory
Ireland
Address

Dublin

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Statens Foderstofkontrol
Denmark
Address

Lyngby

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UK, Ministry of Agriculture
Greece
Address

Athens

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University Uppsala
Sweden
Address

Uppsala

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