By utilization of silkworm excrement the cost of forage for pigs was reduced and the profit was increased by 55 Yuan per head in average.
利用蚕沙喂猪可以降低饲料成本，平均每头猪增加盈利55元。
By utilization of silkworm excrement the cost of forage for pigs was reduced and the profit was increased by 55 Yuan per head in average.
利用蚕沙喂猪可以降低饲料成本，平均每头猪增加盈利55元。
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