
Ultrasonic Diagnostic Instrument (Vet)
User’s Manual V1.01
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Chapter Nine
Backfat thickness and Lean percentage measurement
In A mode, you can measure the swine’s backfat thickness and lean percentage.
Figure: A mode interface
9.1 Measurement items
Name
Abbreviation Unit
Backfat thickness
BF
mm
Loin thickness
Loin
mm
Average thickness
AVG
mm
Weight
Weight
Kg
Lean percentage
Lean
%
9.2 Backfat measurement
1. Choose the desired measurement site: the trailing edge of shoulder (P1), the tenth rib (P2), the
lumbosacral junction (P3);
2. Put ultrasonic coupling gel to the appropriate site of swine’s back, in order to make good contact
between swine skin and sound window. The probe is placed against the skin of the animal and is
kept perpendicular to the back, move the probe gently, make sure no air bubbles between the skin
and probe. Keep the swine quiet during the test (you can feed the swine during the test).
3. After the image is automatically frozen, the machine automatically displays four groups’
measurement data and the corresponding waveform.