Which processing method is commonly used to reduce anti-nutritional factors in some feedstuffs?

Which processing method is commonly used to reduce anti-nutritional factors in some feedstuffs?

• A. Extrusion.
• B. Freezing.
• C. Chilling.
• D. Sun-drying.

Answer: (A)

The processing method being tested relies on applying heat and mechanical force to inactivate anti-nutritional factors in feeds. Extrusion uses high temperature, pressure, and intense shear as the material travels through a heated barrel and die. This combination denatures heat-labile anti-nutritional compounds such as trypsin inhibitors and lectins, and it also improves starch gelatinization and overall nutrient digestibility. Because it actively reduces these anti-nutritional factors, extrusion is a common and effective way to process feeds like soybeans and other legumes to make nutrients more available and safer for animals. In contrast, freezing, chilling, or sun-drying mainly remove moisture or preserve the material and do not reliably inactivate these anti-nutritional compounds.

The processing method being tested relies on applying heat and mechanical force to inactivate anti-nutritional factors in feeds. Extrusion uses high temperature, pressure, and intense shear as the material travels through a heated barrel and die. This combination denatures heat-labile anti-nutritional compounds such as trypsin inhibitors and lectins, and it also improves starch gelatinization and overall nutrient digestibility. Because it actively reduces these anti-nutritional factors, extrusion is a common and effective way to process feeds like soybeans and other legumes to make nutrients more available and safer for animals. In contrast, freezing, chilling, or sun-drying mainly remove moisture or preserve the material and do not reliably inactivate these anti-nutritional compounds.