This collection of articles from the Journal of Dairy Science has been compiled to represent seminal articles that illustrate key concepts in the understanding and control of mastitis. It does not include papers dealing with milking machines or sensing technologies. The papers are ordered chronologically and represent the evolution of the disease over more than half a century. It is hoped that review of these papers will help future researchers build on past knowledge. This collection was challenging to assemble because of the scope of the disease and the tremendous breadth of the subject; several thousand articles on this topic can be retrieved from the Journal of Dairy Science archives using relevant search terms.

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Source: Journal of Dairy Science

PRESS RELEASE - DSM Food Specialities1501 Milk testing QLIP the Netherlands DSM

DSM Food Specialties' Delvotest® T was chosen by QLIP, Dutch partner in quality assurance in the agro food chain, as the national reference test to detect antibiotic residues in milk. The broad spectrum test was selected because of its high sensitivity and reliability. The test is fully compliant with Dutch dairy regulations, promoting a high quality milk supply throughout the whole dairy chain, from farmer to dairy to consumer.

QLIP is commissioned by Dutch dairy companies to determine the composition and quality of farm milk samples. The analyses they perform meet the specific requirements of the official Dutch dairy regulations and detect the most relevant residues at or below the European Maximum Residue Levels (MRLs).

Delvotest® T is a broad spectrum test which identifies a variety of antibiotics at or below EU MRLs with higher sensitivity for tetracyclines than any other microbiological screening test. QLIP selected Delvotest® T because the test is closest to the aimed detection level and because of its robust performance and consistent results.

"In our search to improve antibiotic residue testing, Delvotest® T performed to our expectations", according to Louw Beerstra, Head of the QLIP Routine Laboratory. "Last year, in July, we started using Delvotest® T as a screening test for antibiotic residues in milk. The test has a high sensitivity on tetracyclines, an antibiotic which is increasingly becoming a concern for many health authorities worldwide. In the Netherlands, there is a successful program in place to reduce the usage of antibiotics in general. A test like Delvotest® T is an important tool to safeguard the suitability of milk that forms the basis for the broad range of excellent quality Dutch dairy products."

Through the implementation of Delvotest® T by QLIP, it has become the industry benchmark in the Netherlands to detect antibiotic residues in milk in the whole dairy chain.

Joint work between ISO and the International Dairy Federation (IDF) has resulted in an important update of a key analytical standard for the global dairy sector.ISO 9622|IDF 141* contains guidelines for the testing of milk and milk products with mid-infrared instruments. These instruments are extensively used in laboratories and dairy plants worldwide.

The new version now also fully covers the use of Fourier Transform InfraRed (FTIR) technology, which improves the routine compositional analysis of milk, according to Paul Sauvé and Harrie van den Bijgaart, two experts involved in the standard's development.

More accurate test results

"FTIR analysers measure the full mid-infrared spectrum whereas the description in the old standard was limited to traditional wavelengths," explained Paul Sauvé, expert at the IDF. "This means we can be more accurate with fat and protein measurements and test for more components such as urea and added water," he said. This increased accuracy is important for products intended for export and trade and will help set pricing in milk payment schemes, as milk prices vary depending on the fat and protein contents, highlighted Harrie van den Bijgaart, Chair of the ISO committee that developed the standard (ISO/TC 34/SC 5).

"Furthermore, it could lead to the development of new tools to help dairy farmers optimize their herd management, for example indicators for ketosis and feed efficiency," he added. In addition, the fact that multiple parameters can be measured at the same time reduces costs in testing laboratories.

Standards: reaching consensus and documenting it

IDF and ISO have been working together over many years to develop and publish standard methods of analysis and sampling for milk and other dairy products. Harrie van den Bijgaart explained the significance of this collaboration: "Joint International Standards are important to prevent duplication of work in the development of standards and to avoid incongruences. That is what standardization is all about, reaching consensus between stakeholders in the broadest sense and documenting it."

September 23th 2013 - Source: International Dairy Federation (IDF)