Bovine Pregnancy Diagnosis Flashcards
T/F: Estimation of stage of pregnancy is most accurate during the 2nd half of gestation
False
The fetus is first palpable at ______ days gestation
55-65 days
A mouse-sized fetus length is consistent with a gestation length of _____ in a cow
60 days
What are the four cardinal signs of pregnancy?
- Fetal membrane slip
- Amniotic vesicle
- Placentomes
- Fetus
Must ID at least one positive sign of pregnancy
A small cat-sized fetus length is consistent with a gestation length of _____ in a cow
120 days
At what location is the size of the placentomes most consistent?
just cranial to cervix at level of bifurcation
The middle uterine artery is found in the ________ ligament
broad
A Doberman-sized fetus length is consistent with a gestation length of _____ in a cow
210 days
Amniotic vesicle is first palpable how far into pregnancy?
~32-35 days
Difficult to palpate after ~55-60 days
T/F: Fremitus is one of the four cardinal signs of pregnancy
False
Fremitus is a supportive sign of pregnancy!
During palpation you notice one uterine horn is larger and has a softer tone. Can you determine the cow is pregnant?
No.
You must have one of the four cardinal signs of pregnancy!
In diagnosing pregnancy, ultrasound is most useful after _____ days
24
A beagle-sized fetus length is consistent with a gestation length of _____ in a cow
150 days
Placentomes first become palpable how far into pregnancy?
~80 days
What is the earliest sign of pregnancy?
membrane slip
In dairy herds, when are pregnancy checks usually performed?
~30 days, then again at ~60 days, then again at dry off
-
ID non-pregnant cows so they can be bred again
- ID repeat breeders; cull if necessary
In beef herds, when are pregnancy checks usually performed?
at weaning
ID non-pregnant animals so they can be culled
A rat-sized fetus length is consistent with a gestation length of _____ in a cow
90 days
Name some supportive signs of pregnancy:
- Asymmetry of the uterine horns
- Thinning and tone of uterine wall
- Fixation of cervix
- Fremitus of middle uterine artery
- Presence of CL
**Note that these are NOT cardinal signs of pregnancy! If you find these, it does NOT necessarily mean the cow is pregnant**
