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Initiative to improve consistency in milk SCC

The European Commission's Joint Research Centre (JRC) announced the launch of the first certified reference materials for somatic cell counting in milk, an integral part in a joint project of the International Dairy Federation (IDF) and the International Committee for Animal Recording (ICAR) to establish an international reference system for somatic cell counting in raw milk.

According to a news release, the reference materials are the result of several years of cooperation between IDF, ICAR and EC JRC, the European Commission’s science and knowledge service. The materials were developed in response to an identified need to have available a common, robust, and internationally accepted anchor point to implement and safeguard equivalent somatic cell counting worldwide.

Significant importance for the sector

Somatic cell counting is a key indicator for udder health in several lactating animals, including dairy cows. Accurate counting therefore has relevance in food quality regulations, milk payment testing, farm management and breeding programmes. The counting of somatic cells relies on the performance of high capacity routine somatic cell counters. However, prior to the release of the new reference materials, no robust common reference was available.

Caroline Emond, director g of IDF said: “Current practice requires milk laboratories in different geographies to link to their own individual reference materials, creating potential issues with comparability and thus equivalence. Thanks to the combined expertise of IDF, ICAR and the JRC, we are a step closer to overcoming these issues.”

The reference materials (ERM-BD001) are arranged as sets. Each set consists of two bottles with spray-dried cow milk, one with low and one with high somatic cell count, characterised by means of an interlaboratory comparison with 32 laboratories worldwide. The reference materials' documentation includes instructions on the reconstitution, and defines the intended use: calibration material for routine methods, and quality control material for both reference methods and routine methods. Moreover, the materials can be used to assign values to in-house materials.

“Looking ahead, IDF and ICAR are working on additional guidance to provide further information on the use of this material to establish international metrological traceability for milk analyses,” Dr Silvia Orlandini, Milk Analysis Certification Executive for ICAR added.

In addition to the applications already mentioned, the material will be of specific interest to dairy herd improvement organisations, QA services, manufacturers and distributors of routine equipment for somatic cell counting, providers of secondary reference materials for somatic cell counting, organisers of proficiency testing, animal health organizations, universities and research institutes and accreditation bodies.

The reference materials can be acquired directly through EC JRC or its authorised reference material distributors, here.

Source and for more info: IDF