dc.description.abstract |
Tick and tick borne haemoparasites are the main challenge of livestock production and
productivity in Ethiopia particularly in North West Ethiopia due to favorable climate
condition. A cross-sectional study was conducted from December 2020 to July 2021 on ixodid
tick infestation and tick borne haemoparasites of cattle in selected districts of Awi zone with
the objectives of determining the prevalence of ixodid tick infestation and tick borne
haemoparasites, identifying the existing ixodid tick species, assessing seasonal variation of
ixodid ticks and investigating the major risk factors associated with tick infestation and
haemoparasites. The districts were selected purposefully and multistage sampling was used to
select kebeles and households. A total of 384 cattle from the two districts were randomly
selected and examined for the presence of tick infestation and tick borne haemoparasites.
Ticks were identified at species level by using morphological identification keys under a
stereomicroscope. Thin blood smear examinations were done to assess the presence of tickborne
haemoparasites.
The
overall
prevalence
of
tick
infestation
and
tick
born
haemoparasite
were
45% and 3%, respectively. A total of five potential risk factors were investigated for
their association with cattle tick infestation and tick born haemoparasites using logistic
regression and chi- square test. Age, body condition, agro ecology, and season were found
significantly (P<0.05) associated with the risk of cattle tick infestation. Among the risk
factors tested, season and body condition were found significantly (P<0.05) associated with
the risk of tick borne haemoparasite by chi-square test. A total of seven tick species were
identified. Of which, Amblyomma varigatum and Boophilus decoloratus were the
predominant tick species encountered with prevalence of 55% and 15.7% respectively.However, in highland R. praetextatus species was not recorded. Furthermore, a total of 128
blood samples of cattle from Jawi district were examined using thin blood smear and 3% of
them were infected by the Babesia bigemina. Tick infestation and tick born haemoparasite
found in this study was high and seems to play vital role causes reduction of productivity,
hide value and foreign exchange of the country and transmission of tick borne
haemoparasites. Therefore, implementing the effective control and prevention methods is
needed to mitigate risk factors for tick infestation and tick born haemoparasite in the study
area. |
en_US |