Weight Loss Due to Microorganism ($L_m$):

$$L_m = \left( \frac{W_i (100 - M_i)}{100} + 0.68 \times 10^{0.44M_i - 11.08} \right) \times D$$

Where:

• $L_m$ is the weight loss due to microorganism, in kilograms (kg).
• $W_i$ is the weight of incoming stock, in tons.
• $M_i$ is the moisture content of incoming stock, in percentage (% w.b.).
• $D$ is the storage period, in days.