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Table 4 Cumulative incidence of blackleg infection and mortality rates based on breed, sex and age category from the study districts

From: Epidemiology and financial loss estimation of blackleg on smallholder cattle herders in Kembata Tambaro zone, Southern Ethiopia

Description of events

Local zebu

 

Crossbred

 

p value

CuI in study groups (%)

n = 471

17.9 (16.5–19.4)

n = 206

19 (16.9–21.6)

0.381

CuI in male animals (%)

n = 108

13.4 (11.2–15.9)

n = 16

11.9 (7.4–18.4)

0.364

CuI in female animals (%)

n = 363

19.9 (18.2–21.9)

n = 190

20 (17.7–22.9)

0.878

CuI in age category

p < 0. 05

 

p < 0. 05

  

CuI in calves (%)

n = 3

4.4 (1.5–12.2)

n = 9

16.9 (9.2–29.2)

 

CuI in bulls/heifers (%)

n = 329

35.8 (32.8–38.9)

n = 107

32.2 (27–37.4)

 

CuI in adults (%)

n = 139

8.4 (7.2–9.9)

n = 90

13 (10.7–15.7)

 

Mortality rate in affected study groups (%)

n = 94

3.6 (2.9–4.4)

n = 43

3.9 (2.9–5.3)

0.539

Mortality in males (%)

n = 24

2.9 (2–4.4)

n = 6

4.4 (2–9.4)

0.368

Mortality in females (%)

n = 70

3.8 (3–4.8)

n = 37

3.9 (2.9–5.4)

0.912

Mortality in age category (%)

p < 0.05

 

p < 0.05

  

Mortality in calves (%)

n = 1

1.5 (0.2–7.9)

n = 1

1.9 (0.3–9.9)

 

Mortality in bulls/heifers (%)

n = 66

7.2 (5.7–9)

n = 27

8 (5.7–11.6)

 

Mortality in adults (%)

n = 27

1.6 (1.1–2.4)

n = 15

2.2 (1.3–3.6)

 
  1. CuI cumulative incidence