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Table 1 Prevalence of nematodes, trematode and protozoan in yaks in Gansu, China

From: Prevalence of gastrointestinal parasites in free-range yaks (Bos grunniens) in Gansu Province, Northwest China

Parasites

Autumn

Winter

Spring

Summer

 

No.positive/Prevalence (%)

95% CIa

No.positive/Prevalence (%)

95% CI

No.positive/Prevalence (%)

95% CI

No.positive/Prevalence (%)

95% CI

Nematodes

 Strongylidae

89.00/28.53

23.52–33.54

14.00/13.75

6.27–19.22

80.00/47.93

62.06–76.04

8.00/5.30

1.73–8.87

Strongyloides papillosus

19.00/6.09

3.44–8.70

NDb

ND

1.00/0.66

0.00–1.96

Trichuris spp.

5.00/1.60

0.21–3.00

1.00/0.98

0.00–2.89

20.00/11.91

7.01–16.80

3.00/1.99

0.00–4.21

Nematodirus spp.

69.00/22.12

17.51–26.72

ND

4.00/2.38

0.08–4.69

ND

Protozoan

Eimeria spp.

69.00/22.12

17.51–26.72

15.00/14.71

7.83–21.58

23.00/13.69

8.49–18.89

18.00/11.92

6.75–17.09

Trematode

Fasciola spp.

ND

ND

11/6.55

2.81–10.29

ND

  1. a Confidence intervals
  2. b Not detected