Which of the following is not a characteristic of pigs?

The correct answer is "unlimited ability to digest fibre". Pigs are known for their high feed conversion rate, fast growth rate, and high prolificacy. However, unlike ruminants like cows and sheep, pigs have a limited ability to digest fibre. This is because they have a simple stomach and lack the specialized microorganisms necessary to break down complex carbohydrates in fibrous materials like hay and straw. As a result, pigs require a diet that is high in energy and low in fibre to support their growth and production.