Ultrasound back fat thickness
From BIF Guidelines Wiki
Phenotype
The ultrasound rib fat thickness measurement can be made from the same image used to estimate ribeye area. Fat thickness at the 12th-13th rib is measured at a point three fourths of the distance from the medial end of the longissimus dorsi muscle (12-13th rib interface) and perpendicular to the surface of the hanging ribbed carcass. Ultrasound scanning protocol requires the collection of an image made between the 12th-13thribs using a linear-array transducer and standoff guide that conforms to the curvature of the animal’s back
Adjusted Value
Ultrasonic back fat thickness is adjusted to a common age (e.g., 365 days of age) and in multi-breed settings is also adjusted for breed composition.
