Avian Hematology Flashcards Preview

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Flashcards in Avian Hematology Deck (17):
1

What is the average blood volume of birds

10% of body weight

2

How much blood can safely be removed from a bird

1% of the bird's body weight

3

What are the typical venous sites in birds

Right jugular vein is best

Metatarsal vein

Wing- basilic vein- along the humerus on the ventral aspect of the wing

4

What is the last resort for avian blood draw if nothing else works

toenail clip

5

Describe the blood sample handling procedure in birds

Use gentle suction
remove needle before putting in vacutainer
best to make a blood smear immediately

6

What anticoagulants are typically used with birds

Lithium heparin- sometimes used- but make smear right away
EDTA can be used
Heparinized capillary tube

7

What is the normal pcv for birds

35-55%

8

Describe the RBC of birds

RBCs are oval cells with a central nucleus that stains dark blue with pink cytoplasm

9

Describe the reticulocytes of birds

begin as round cells that have a medium blue nucleus and light blue cytoplasm (polychromasia)

10

What is a normal amount of polychromasia for birds to have

1-5%

11

How long is the lifespan of the rbc in the bird

average is 50 days

12

What is a heterophil

the avian equivalent of the mammalian neutrophil
bilobed or trilobed nucleus that stains dark blue
Granules are rod shaped- stain eosinophilic

13

Can birds have a left shift?

Yes

14

Describe monocytes in birds

large and have a horseshoe shaped nucleus

15

How do you do a WBC/rbc count in birds

You use a unopette that stains eosinophils.

16

How do you guestimate the WBC count of a bird

count average # of WBC in 8-10 fields, multiply by 2000 = # WBC/ uL

17

What do we test for in avian biochemistry

CPK, AST, URIC ACID, BLOOD GLUCOSE, CALCIUM.