Semen Evaluation. Stallion AI Services performs tests on all semen collected at the centre to make sure only the best quality semen is used for AI. More indepth evaluations are also carried out on frozen semen and this service is also available for stallion owners wishing to know the quality of their stallionsâ semen.
Ultrasound is one of the screening tests that may be done in the first trimester to look for birth defects, such as Down syndrome. The first-trimester screening test uses ultrasound to measure the thickness of the skin at the back of the baby's neck.
How Early Can a Baby Be Seen on an Ultrasound?. Transvaginal and transabdominal ultrasounds allow women to see a developing baby or babies in their womb. During the first three weeks after conception, ultrasound technicians can't usually take any measurable images with an ultrasound. Around week four, you can see the gestational sac -- a cocoon-like structure that helps form the placenta. During the fifth week, you can see the tiny fetus, measuring approximately 1/8 to 1/16 of an inch. Earliest Images of Your Baby. Ultrasounds can detect the earliest images of your baby around five weeks after conception.