Full digital mechanical sector scanning ultrasonic diagnostic instruments (Vet) User’s Manual V1.07
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4. After the image is automatically frozen, or press
key on the keyboard (or press the freeze
switch
on the probe) to freeze the image, the machine automatically displays four groups’
measurement data and the corresponding waveform;
5. Press
key, choose and view the #1, #2, #3, #4 corresponding to the test waveform and
measurement data.
Note:
1. If AVG values are displayed in red, it indicates that the measurement error is larger,
need to re-test.
2. Only choose P2 site, you can measure the “Loin”.
3. You can get accurate values of the three layers of backfat at the P2 site (the last rib).
Many hogs have the thin third layer of backfat. As they increase in weight and age, the
third layer becomes thicker and wider spread over the body. Measurement at P1 site
(the trailing edge of shoulder: about 4-5 rib) is more difficult and inconsistent. P3 site
(the lumbosacral junction) will get accurate measurement for two layers of backfat but
may not give an accurate measurement for the third layers due to the muscle tissue.
7.3 Measurement of Swine’s lean percentage
1. Enter A mode freeze state;
2. Put ultrasonic coupling gel evenly to the appropriate site of swine’s back (if necessary, cut off
the hair at the measurement site and wet the skin with hot water, then apply light oil to wet the
skin one minute or two), in order to make good contact between swine skin and sound window.
The probe is placed against the skin of the swine 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. Press
key on the keyboard (or press the freeze switch
on the probe) to unfreeze the
image. Press
or
key, choose the measurement site P2 (the tenth rib);
4. After the image is automatically frozen, or press
key on the keyboard (or press the freeze
switch
on the probe) to freeze the image, to measure the backfat thickness and loin
thickness (see the above the method of backfat measurement);
5. Then, press
or
key, adjust the “Weight” (range: 037~300kg), the lower right will
automatically display the lean percentage.
7.4 Measurement considerations
1. When measuring the older animal, if necessary, it needs to remove the hair at the site and wet
the skin with hot water, then apply light oil to wet the skin one minute or two before
measuring. Always keep the probe perpendicular to the swine’s back; errors may result if
probe is at an angle. If chooses the inaccurate site, such as animal shoulder or arm, the
measured result is not accurate.
2. When the probe leaves the measuring site, it needs to reapply ultrasonic coupling gel evenly to
continue measurement.
3. Have a bad contact, first remove any possible manure, straw and excess hair, etc., which may
cause a poor contact between the sound window and skin and leading to inaccurate measured
results.
4. Recommend using dedicated ultrasonic coupling gel, also can use vegetable oil.