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Swine GA measurement
3.
To measure the heart macro-axis, screen should display the maximal longitudinal axis of heart.
With the growth of gestation age, the fetal heart macro-axis increase regularly. Measuring method
is given in the following figure:
Swine Heart measurement
4.
Measure selected parameter distance according to distance measurement method, the
corresponding gestation age data will automatically shows behind " G·A ".
●
SHEEP-USD: Estimate gestation age according to hilum-spine length of sheep
There are two methods to exam pregnant sheep:
Use convex or linear probe to check abdomen and endo-rectal probe to rectum. These two methods are
the same usful. It is proofed as cording to some publication that these two methods are the same
effective in pregnancy examination.
—
Rectum exmanination is more exact than abdomen examination within first 35 days pregnancy;
—
The two methods are the same effective between 35 to 70 days pregnancy;
—
After 70 days pregnancy, abdomen examination is better because it is more practical when the
uterine becomes large.
Abdomen check:
1.
Abdomen examination can be done when the sheep is standing or lying or seating. Put the probe
against the appointed abdomen center where there is no fur.
Heart
