The formulas to calculate space requirement for swine (group of growing swine) are:

1. For Up to 10 kg:

\[ SR = 0.11 \cdot Na \]

2. For 11 to 30 kg:

\[ SR = 0.20 \cdot Na \]

3. For 21 to 40 kg:

\[ SR = 0.35 \cdot Na \]

4. For 41 to 60 kg:

\[ SR = 0.50 \cdot Na \]

5. For 61 to 80 kg:

\[ SR = 0.70 \cdot Na \]

6. For 81 to 100 kg:

\[ SR = 0.85 \cdot Na \]

Where:

• \(SR\) is the space requirement in square meters.
• \(Na\) is the number of animals.