Bovine Pregnancy Diagnosis Flashcards Preview

RUSVM Theriogenology > Bovine Pregnancy Diagnosis > Flashcards

Flashcards in Bovine Pregnancy Diagnosis Deck (19)
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1
Q

T/F: Estimation of stage of pregnancy is most accurate during the 2nd half of gestation

A

False

2
Q

The fetus is first palpable at ______ days gestation

A

55-65 days

3
Q

A mouse-sized fetus length is consistent with a gestation length of _____ in a cow

A

60 days

4
Q

What are the four cardinal signs of pregnancy?

A
  1. Fetal membrane slip
  2. Amniotic vesicle
  3. Placentomes
  4. Fetus

Must ID at least one positive sign of pregnancy

5
Q

A small cat-sized fetus length is consistent with a gestation length of _____ in a cow

A

120 days

6
Q

At what location is the size of the placentomes most consistent?

A

just cranial to cervix at level of bifurcation

7
Q

The middle uterine artery is found in the ________ ligament

A

broad

8
Q

A Doberman-sized fetus length is consistent with a gestation length of _____ in a cow

A

210 days

9
Q

Amniotic vesicle is first palpable how far into pregnancy?

A

~32-35 days

Difficult to palpate after ~55-60 days

10
Q

T/F: Fremitus is one of the four cardinal signs of pregnancy

A

False

Fremitus is a supportive sign of pregnancy!

11
Q

During palpation you notice one uterine horn is larger and has a softer tone. Can you determine the cow is pregnant?

A

No.

You must have one of the four cardinal signs of pregnancy!

12
Q

In diagnosing pregnancy, ultrasound is most useful after _____ days

A

24

13
Q

A beagle-sized fetus length is consistent with a gestation length of _____ in a cow

A

150 days

14
Q

Placentomes first become palpable how far into pregnancy?

A

~80 days

15
Q

What is the earliest sign of pregnancy?

A

membrane slip

16
Q

In dairy herds, when are pregnancy checks usually performed?

A

~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
17
Q

In beef herds, when are pregnancy checks usually performed?

A

at weaning

ID non-pregnant animals so they can be culled

18
Q

A rat-sized fetus length is consistent with a gestation length of _____ in a cow

A

90 days

19
Q

Name some supportive signs of pregnancy:

A
  • 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**