Calculated Factors:
Whitlock Paracytometer 2 X 0.6ml slide
The mean of two counts is recommended in calculating egg counts.
(click here to see the equation and general calculations
to calculate eggs per gram from a worm egg count)
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Eggs counted in
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1 strip |
2 strips
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4 strips
=1chamber |
2 chambers |
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weight of faeces
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Water
|
Saturated Salt Solution |
Dilution |
0.15 ml
|
0.3 ml
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0.6 ml
|
1.2 ml
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. |
recommended for
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FACTOR x |
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2 g
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20 ml
|
38 ml
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1:30
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200 |
100
|
50 |
25 |
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Sheep
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5 g
|
30 ml
|
55 ml
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1:18
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120
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60
|
30
|
15
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Cattle
|
2 counts essential
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4g
|
20 ml
|
36 ml
|
1:15
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100
|
50
|
25
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-
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Horses
|
2 counts essential
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For other dilutions: |
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2g
|
2.5 ml
|
45.5 ml
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1:25
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167
|
83
|
41.5
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-
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impractical factors
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*
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* recommended
generic dilution- para 9.1 of reference.
Reference:
Details about the techniques
which use these slides may be found in the Section on Anthelmintic Resistance
in Sheep (para 9.1 in particular) in
Australian
Standard Diagnostic Techniques for Animal Diseases.
- ISBN 0 643 05243 7 636.0896075
developed through the Standing
Committee on Agriculture and Resource Management, Animal Health Committee,
Sub-committee on Animal Health
Laboratory Standards
and published on their behalf
by CSIRO Information Services, Australia.
(Note that the recommended dilution is intended
for the Whitlock Universal slide to give
the simple Factor as above. Alternatives are permitted)
select here for
Last Update: 16/06/99