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Table 2 Descriptive statistics of faecal egg counts (FEC) of strongyle eggs and ELISA tests using the SVANOVIR® Ostertagia-Ab ELISA kit

From: Comparison of diagnostic methods for assessment of Ostertagia ostertagi exposure in Norwegian dairy herds

Sample material

Sampling unit

Unit

N

Mean

Median

SD

Range

Faeces

FSG

EPG

180

97.11

20

220.31

0–1750

 

FSG

Log EPG

180

2.68

3.00

2.22

0 -7.47

Serum

FSG

ODR

177

0.55

0.57

0.28

-0.06 -1.24

 

Cows

ODR

197

0.58

0.58

0.24

0.04–1.28

Milk

Cows

ODR

194

0.52

0.53

0.25

-0.03–1.18

Bulk tank milk

Herd

ODR

20

0.64

0.70

0.18

0.22–0.92

  1. FSG: First season grazers EPG: Eggs per gram ODR: Optical density ratio SD: Standard deviation
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Acta Veterinaria Scandinavica

ISSN: 1751-0147