Home About Browse Search

Afonso, Nikitta, 2022. Impact of rainfall on East Coast Fever in cattle at Ol Pejeta Conservancy, Kenya. Second cycle, A2E. Uppsala: SLU, Dept. of Clinical Sciences (until 231231)



Weather conditions commonly have a large impact on tick-borne diseases as it affects the abundance of the tick vector. The cattle disease East Coast Fever (ECF) is no exception. Rainfall particularly seems to play an important role in the transmission of ECF.
In this study I examined the associations between precipitation and cattle mortality due to ECF in Ol Pejeta Conservancy in Laikipia, Kenya. Long-term data on daily ECF mortality during the years 2016-2021 was compared with rainfall during this same period. The results showed that ECF-related deaths follow rainfall with a peak lag effect on 21 days. The results suggest that control measures for reduction of ticks need to be increased during rainy periods and can possibly be decreased during periods of drought.
The close interaction between oxpeckers and large herbivores has been known for many years. The birds feed on ticks and other ectoparasites from their host animal. Whether the cleaning interactions between oxpeckers and cattle could be a good indicator of tick-load on the cattle was analyzed in this study. The intention was to investigate whether the quantity of oxpeckers could be used as a simple measurement for when treatment with acaricides is needed. Due to lack of oxpeckers in the observations performed it was not possible to detect a correlation between tick-load and number of oxpeckers on cattle in this study. The results point towards oxpeckers not being a good measurement of tick-load on cattle treated with acaricides.

Main title:Impact of rainfall on East Coast Fever in cattle at Ol Pejeta Conservancy, Kenya
Authors:Afonso, Nikitta
Supervisor:Jung, Jens and Yngvesson, Jenny
Examiner:Andersson, Maria
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2022
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:VY002 Veterinary Medicine Programme 330 HEC
Supervising department:(VH) > Dept. of Clinical Sciences (until 231231)
Keywords:East Coast Fever, ECF, Theileria Parva, tick-borne disease, Kenya, cattle, precipitation, oxpecker
Permanent URL:
Deposited On:09 Jun 2023 07:44
Metadata Last Modified:10 Jun 2023 01:00

Repository Staff Only: item control page


Downloads per year (since September 2012)

View more statistics