Avian Hematology (ATE2639L) Flashcards

1
Q

Venipuncture

A

Weight and health determine how much can be drawn
* no symptoms: 1% of body weight can be drawn
* symptoms: 0.5% of body weight can be drawn

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2
Q

Venipuncture Sites

A

Jugular
* featherless area on neck
* use right side (larger)

Ulnar / Brachial
* crosses ventral surface of elbow joint

Medial Metatarsal
* medial side of lower leg
* preferred site for waterfowl and chickens

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3
Q

Avian PCV

A
  • Normal is 35-55%
  • Plasma color is slightly icteric
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4
Q

Avian TP

A

Normal generally 3-6 g/dL
* varies with age
* <2.3 g/dL is very poor prognosis

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5
Q

WBC Estimate

A
  • Count average WBC number on 40x field
  • Multiply average by 1600
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6
Q

Avian RBC
Regeneration Signs

A

Best signs of Regeneration
* polychromasia
* rubricytes

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7
Q
A

Thrombocytes
* do not call them platelets in birds

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8
Q

Thrombocytes
Normal Range

A

Adequate number is 1-2 / OIF
* clumping normal

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9
Q

Avian Heterophils

A
  • Correspond to neutrophils
  • Most common WBC in birds
  • Round cell, colorless cytoplasm
  • Brick red / rod shaped granules
  • 2-3 lobed nucleus
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10
Q
A

Avian Heterophil

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11
Q

Avian Eosinophils

A
  • Round cell, light blue cytoplasm
  • Granule size varies with species, but will be uniform within same patient
  • Granules brighter than heterophils
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12
Q
A

Avian Eosinophil

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13
Q

Avian Basophils

A
  • Small round cell
  • Centrally located nucleus
  • Nucleus often hidden by granules
  • Granules are deeply basophilic
  • Cytoplasm (if seen) is colorless to light purple/red
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14
Q
A

Avian Basophil

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15
Q

Avian Monocytes

A
  • Largest WBC
  • Irregular cell size
  • Bilobed or round nucleus
  • Blue grey cytoplasm; granular appearance
  • +/- vacuoles
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16
Q

Avian Blood Parasites

A
  • Plasmodium (avian malaria)
  • Haemoproteus
  • Leukocytozoon
17
Q

Plasmodium

A
  • Found in RBC and extracellular
  • “Plows” nucleus out of the way
  • Pathogenic to other birds
18
Q

Plasmodium Effects

A
  • Hemolytic Anemia
  • Hemoglobinuria
  • Leukocytosis
  • Lymphocytosis
19
Q
A

Plasmodium

20
Q

Haemoproteus

A
  • Found in RBCs
  • Parasite occupies 1/2 of cell cytoplasm
  • Intermediate host are insect vectors
  • Nonpathogenic
21
Q
A

Haemoproteus

22
Q

Leukocytozoon

A
  • Disease in ducks, geese, and turkeys
  • Largest intracellular blood parasite
  • In RBCs and WBCs
  • Distorts cell
23
Q

Leukocytozoon Effects

A
  • Hemolytic Anemia
  • Hemoglobinuria
24
Q
A

Leukocytozoon