Table 2 Associations of infection intensity with the respective risk factors.

From: Epidemiology and field efficacy of anthelmintic drugs associated with gastrointestinal nematodes of sheep in Nejo district, Oromia, Ethiopia

Risk factors

Category

No. of sheep examined

No. of positive

Level of infection in%

χ2

P-value

Light

Moderate

Heavy

Study site

W/A

137

64

25 (39.0)

28 (43.8)

11 (17.2)

11.6

0.071

E/W

116

65

21 (32.3)

41 (63.1)

3 (4.6)

N/T

131

64

20 (31.3)

32 (50.0)

12 (18.7)

Age

Young

177

102

36 (35.3)

52 (51.0)

14 (13.7)

7.3

0.063

Adult

207

91

30 (33.0)

49 (53.8)

12 (13.2)

Sex

Male

175

90

36 (40.0)

38 (42.2)

16 (17.8)

7.5

0.058

Female

209

103

30 (29.1)

63 (61.2)

10 (9.7)

BCS

Poor

135

109

35 (32.1)

57 (52.3)

17 (15.6)

82.4

0.000

Medium

172

64

21 (32.8)

35 (54.7)

8 (12.5)

Good

77

20

10 (50.00)

9 (45.00)

1 (5.00)

M/sys

Extensive

209

95

32 (33.7)

44 (46.3)

19 (20.00)

11.5

0.009

S/intensive

175

98

34 (34.7)

57 (58.2)

7 (7.1)

Past D/history

Treated

235

94

32 (34.0)

50 (53.2)

12 (12.8)

25.6

0.000

Untreated

149

99

34 (34.3)

51 (51.5)

14 (14.2)

Total

 

384

193 (50.3)

66 (34.2)

101 (52.3)

26 (13.5)

  1. W/A Walitate Agar, E/W Eba Wakayo, N/T Nejo Town, BCS Body Condition Score, M/sys Management system, S/intensive Semi-intensive, D/history deworming history.