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All issues Volume 28 (2021) Parasite, 28 (2021) 65 Full HTML
Open Access
Research Article

Table 1

Control of R. microplus infestations in cattle vaccinated with the recombinant antigens.

Animal Total tick number
 Tick weight (g)a
 Egg weight (g)b
 Egg fertility (%)c
Control rGluCl rGlyR Control rGluCl rGlyR Control rGluCl rGlyR Control rGluCl rGlyR
1 6854 3614 3764 7.09 6.51 6.14 3.70 3.60 3.33 85.81 83.81 83.49
2 5399 3851 4938 6.55 5.73 7.11 3.48 3.02 3.67 84.12 80.16 84.90
3 2957 3733 3050 5.52 5.20 5.54 2.91 2.79 3.01 83.53 83.43 81.78
Mean ± SD 5070 ± 1607 3732 ± 96 3917 ± 778 6.39 ± 0.65 5.81 ± 0.54 6.26 ± 0.65 3.36 ± 0.33 3.14 ± 0.34 3.34 ± 0.27 84.49 ± 0.97 82.47 ± 1.64 83.39 ± 1.28
% reduction – 26.39* 22.74* – 9.08 2.03 – 6.55 0.59 – 2.39 1.3
t-testd *P < 0.05
% efficacye rGluCl – 33%
rGlyR – 25%
a

Mean weight of 20 tick specimens.

b

Mean egg weight from 20 tick specimens.

c

Mean hatching percentage of eggs from 20 tick specimens.

d

Total tick number, tick weight, egg weight and egg fertility values were compared by Student’s t-test with unequal variance between vaccinated and control groups (*p < 0.05).

e

Vaccine efficacy was calculated as 100[1 − (CRT × CRO × CRF)], where CRT, CRO and CRF are the reduction in the number of adult female ticks, oviposition and egg fertility as compared to the control group, respectively.

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