High-efficiency Pellet Feed Extrusion Production Line

Through in vitro research methods, we determined the enzymatic hydrolysis kinetics of seven feed raw materials before and after extrusion in the intestines of grass carp and silver crucian carp. The results showed that extrusion treatment had an effect on the protein enzymatic hydrolysis rate of feed raw materials. Specifically, the enzymatic hydrolysis rate of rapeseed meal, corn and second meal after extrusion increased, while the enzymatic hydrolysis rate of soybean meal, meat and bone meal and fish meal decreased after extrusion, especially the change of corn. As for cottonseed meal, the change in its enzymatic hydrolysis rate before and after extrusion was not obvious.

In summary, extrusion treatment has a positive effect on feed raw materials with low protein content and high starch content, but it may have an adverse effect on raw materials with high protein content.