The pine forests in Yun and Guishan are easy to get, and pine needles are rich in amino acids. It is a good raw material for reducing feed costs. It is crushed with 15 pounds of live pine needles (with the grinder screen removed), and then mixed and comminuted with corn. In 100 pounds of rations, 3 pounds of fishmeal can be used less, and the effect of feeding is equivalent. It is also possible to add 6 pounds of pine needle powder in the 100 pound diet to replace 3 pounds of fish meal.
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