In feed formulation it is vital to know about both prices and exact nutrient content in order to formulate the most economic feed where all requirements of the animals are meet.
When evaluating feed ingredients it is important to focus not only on price but also the real nutrient content has to be considered. When it comes to evaluation of the protein part it is important not only to look at crude protein (CP) as such but rather the content of essential amino acids.
In the past the prediction of amino acids were both time consuming and also very expensive. Today, however, the use of near infrared reflectance spectroscopy (NIRS) has become a well accepted analytical procedure in the feed industry also when it comes to fast prediction of proximate (crude protein, fat, fiber, moisture, ash) and amino acids content in commonly used feed ingredients.
Thus, good and validated NIRS calibrations can provide the basis for accurate and cost-efficient feed production, but it is on the other hand also important to remember that poor calibration can lead to costly errors. It is therefore extremely important constantly to evaluate the accuracy of the NIRS calibrations that is used to predict the nutrient content.
This article will discuss which parameters are important and explain the how a NIRS calibration should be evaluated.
For more of the article, please click here
Article made possible through the contribution of Evonik Degussa.