In the definitions used in the assignment, what is strain?

**Strain** is the internal disturbance produced when an external stressor challenges the animal’s homeostasis. The external force is the stressor, while strain describes the animal’s internal response or displacement. Genetic potential and feed intake may be affected by stress, but they do not define strain. **Key takeaway:** Stressor describes the challenge; strain describes its internal effect.\n\n**Glossary:**\n- **Stress**: An external demand that tends to displace homeostasis.\n- **Strain**: Internal displacement associated with that demand.\n- **Homeostasis**: Regulation of internal conditions within functional limits.