Infectious bovine keratoconjunctivitis 2019
the disease than adults, it is also easily noticeable on the table 1. This research was performed
in 11 dairy farms and one cattle cross-breeding farm in different parts of Aris region, south-
east Ethiopia. Most cases of morbidity were observed among under one-year old animals
shown on the table 1. This is probably because young animals do not have so effective
immune system and they do not have previous exposure with this disease (Takele and
Zerihun, 2000).
Table 1 The severity of infectious keratoconjunctivitis in various age groups of dairy cattle in
south-east Ethiopia (Takele and Zerihun, 2000).
IBK-Affected age group (years)
Disease servity Number of animals <1 1-2 2-3 >3
Mild 39 21 8 5 5
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