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Once a feed sample has been collected properly, it can be analyzed for nutrients. Most commercial laboratories offer standard feed tests for forages, grains or total mixed rations (TMRs). Analyzing feeds for moisture, protein and energy is recommended when designing diets for beef cattle.
The quality of the products from leading Latin American dairy producer, Dos Pinos, originates from its own feed plant, where all the raw materials and finished feed for cattle are tested in a sophisticated feed laboratory.
Rapid measurement of a fatty acid supplement in poultry feed formulations was performed using near Infrared (NIR) spectroscopy with chemometric analysis.
White paper by Dr. Jürgen Möller explores the process of estimating the uncertainty of a measurement in NIR analysis. This important step takes a scientific understanding of your testing method’s theoretical principles as well as practical experience.
A driving force in the development of chemometrics since the 1970s, NIR spectroscopy (NIR) measures the overtones and combination tones of the fundamental molecular vibrations in the infrared range.
The most straight-forward explanation of “chemometrics” (a word coined by Svente Wold in 1972, so it is now 40 years old!) that I have employed for many years is: “Chemometrics is concerned with the application of mathematical and statistical techniques to extract chemical and physical information from complex data”.
The ideal calibration set contains an adequate range of the property of interest and represents all the important sources of variability that may be present in future prediction samples.
In September 2011, our industry lost a very special individual, John Shenk (1933-2011). While many producers and nutritionists may not recognize the name of John Shenk, be assured that your laboratory personnel know him as one of the “fathers” of near-infrared (NIR) analysis.
The European Grain Network (EGN) has been collaborating on research for more than 15 years. For this particular study, the group wanted to investigate the differences between master reference laboratories in order to make any necessary calibration adjustments and inform the members.