Nature of wool :

• It has elastic and hygroscopic.
• It is non-inflammable and durable
• Naturally water proof
• Bad conductor of Heat and electricity
• Retain warmth and create heat
• It is devoid of medulla and skin cells
• Fine enough to make soft fiber yarn.

Factor affecting nature of wool

1. Genetic factor
2. Physiological and environmental factor

• Nutritional state
• Hormones (pituitary , thyroid , growth hormone , Adeno cortico-tropic hormone)
• Parasites and diseases
• Sunlight and photoperiod
• Season and climate
• Exogenous chemical like CPA
• Interval between shearing (Shearing is done generally twice in a year i.e. feb/ March and Sept/ oct.)