Texas FFA Livestock Judging PracticeTest

What is an inherited defect in swine that manifests as a hair disturbance?

1. Whorl

2. Mottling

3. Scurs

4. Wry neck

The correct answer is: Whorl

An inherited defect in swine that manifests as a hair disturbance is called a whorl. A whorl is a specific pattern of hair growth that differs from the typical fur direction and is a hereditary trait seen in certain breeds of pigs. It occurs when hair grows in a circular pattern, causing a noticeable disruption in the appearance of the coat. This genetic characteristic can be evaluated during livestock judging, as it may affect the animal's practicality for showing or breeding purposes. Typically, whorls are considered a cosmetic defect rather than a functional one, but they can reflect underlying genetics that are important in breeding decisions. The other options pertain to different issues; mottling refers to irregular coloration that does not specifically indicate a hair disturbance. Scurs are small, underdeveloped horns that can appear in polled breeds, but they do not relate to hair growth. Wry neck is a condition affecting the neck's alignment and mobility, not an inherited hair defect. Thus, understanding the concept of a whorl helps in identifying and assessing inherited traits in livestock.