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Table 5 Detection of Anaplasma marginale, Babesia bigemina and Babesia bovis by means of conventional PCR (DNA), serology (iELISA) and blood smears using blood samples collected from cattle subjected to different control schemes against Rhipicephalus microplus

From: Enzootic stability of tick fever in Holstein calves grazing in a tropical region, subjected to strategic cattle tick control with fluralaner

Tick fever agent

Animal age and treatment

4 months

6 months

8 months

10 months

Treatment (FLU)

Control (FIFLUA )

Treatment (FLU)

Control (FIFLUA)

Treatment (FLU)

Control (FIFLUA)

Treatment (FLU)

Control (FIFLUA)

PCR

 B. bovis

0/15 (0)

0/15 (0)

2/15 (13.3)

3/15 (20)

0/15 (0)

0/15 (0)

0/15 (0)

1/15 (6.6)

 B. bigemina

5/15 (33.3)

11/15 (73.3)

9/15 (60)

12/15 (80)

12/15 (80)

15/15 (100)

13/15 (86.7)

15/15 (100)

 A. marginale

14/15 (93.3)

13/15 (86.6)

15/15 (100)

15/15 (100)

15/15 (100)

15/15 (100)

15/15 (100)

15/15 (100)

iELISA

 B. bovis

3/15 (20)

1/15 (6.6)

5/15 (33.3)

5/15 (33.3)

4/15 (26.6)

7/15 (46.6)

6/15 (40)

7/15 (46.6)

 B. bigemina

11/15 (73.3)

11/15 (73.3)

14/15 (93.3)

15/15 (100)

14/15 (93.3)

13/15 (86.6)

15/15 (100)

15/15 (100)

 A. marginale

4/15 (26.6)

7/15 (46.6)

7/15 (46.6)

8/15 (53.3)

14/15 (93.3)

14/15 (93.3)

15/15 (100)

15/15 (100)

Blood smear*

 B. bovis

0/30 (0)

0/30 (0)

2/30 (6.6)

0/30 (0)

10/30 (33.3)

7/30 (23.3)

1/30 (3.3)

0/30 (0)

 B. bigemina

01/30 (3.3)

0/30 (0)

1/30 (3.3)

1/30 (3.3)

14/30 (46.6)

11/30 (36.6)

3/30 (10)

0/30 (0)

 A. marginale

19/30 (63.3)

17/30 (56.6)

27/30 (90)

30/30 (100)

30/30 (100)

30/30 (100)

30/30 (100)

30/30 (100)

  1. Values in table are presented as the number of animals who tested positive for tick fever agents among the animals tested, with the prevalence (%) given in parentheses
  2. PCR Conventional PCR, FIFLUA fipronil + fluazuron formulation, FLU fluralaner formulation, iELISA indirect enzyme-linked immunosorbent assay
  3. *Blood smears were performed on all 30 animals in each group