Silkworm excrement is the excrement discharged after eating mulberry. The color is dark green and granular, and the size gradually increases with age.
But when it grows, it is as small as fine sand at the age of one, and as big as mung beans at the peak of five. When rearing 1 box of silkworm eggs (ant 10g, 25,000 silkworms), fresh silkworm excrement of 100- 150kg can be obtained at the whole age, and 50-55kg or about 45kg can be obtained after air drying. Composition of silkworm excrement; Crude protein accounts for 16.7%, crude fat accounts for 3.7%/ crude fiber accounts for 19%, soluble nitrogen-free substances account for 45%, and ash accounts for 15.6%. Silkworm excrement is rich in nutrition, which is an excellent fertilizer and an ideal feed for pigs, sheep and fish. Silkworm excrement is also rich in chlorophyll, vitamin E and K pectin, which is an economic raw material for extracting these chemicals. Silkworm dung is also used to make silkworm dung pillows, which is considered to have the effect of cooling and lowering blood pressure.