GB/T 18868-2002

This standard specifies the use of near-infrared reflectance spectroscopy (NIRS) for the simultaneous rapid determination of moisture, crude protein, crude fat, crude fiber, lysine, and methionine in animal feeds. It is applied in feed production quality control, agricultural testing laboratories, and regulatory inspection settings to replace slower wet chemistry methods. The standard enables high-throughput screening of feed ingredients and finished products to ensure nutritional accuracy and compliance with feed formulation requirements.