Research Article
Ectoparasites Prevalence in Small Ruminants in and around
Sekela, Amhara Regional State, Northwest Ethiopia
Zewdu Seyoum,
1
Tsegaye Tadesse,
2
and Agerie Addisu
3
1
Faculty of Veterinary Medicine, University of Gondar, P.O. Box 196, Gondar, Ethiopia
2
Amhara National Regional State Bureau of Agriculture, Sekela, Ethiopia
3
College of Natural and Computational Sciences, University of Gondar, P.O. Box 196, Gondar, Ethiopia
Correspondence should be addressed to Zewdu Seyoum; zewdus@yahoo.com
Received 6 October 2014; Revised 6 March 2015; Accepted 20 March 2015
Academic Editor: Nora Mestorino
Copyright © 2015 Zewdu Seyoum et al. Tis is an open access article distributed under the Creative Commons Attribution License,
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Tis study was conducted to determine the prevalence and type of ectoparasites and to identify risk factors associated with
ectoparasite infestations in small ruminants in and around Sekela, Northwest Ethiopia. Clinical examination and laboratory analysis
were made on 304 sheep and 96 goats. Te collected raw data were analyzed using
2
-test. Out of the 400 sampled animals, 182
(45.5%) were infested with one or more ectoparasites. Te prevalent ectoparasites observed were lice, ticks, Ctenocephalides species,
Melophagus ovinus, and Demodex species. Te infestation rates of ectoparasites with age and sex were signifcantly varied ( < 0.05)
in sheep but not in goats ( > 0.05). Body condition score was not signifcantly associated ( > 0.05) with ectoparasites infestation
in both sheep and goats. In our attempt, only two cases due to Demodex species were recorded in sheep. In conclusion, the prevalence
of ectoparasites in the present study was high and this could afect the wellbeing and productivity of small ruminants. Terefore,
to reduce ectoparasites prevalence and impact on the productivity and health status, planning of integrated control measures with
sustainable veterinary services aiming at creating awareness about the importance and control of ectoparasites for livestock owners
is required.
1. Introduction
Ethiopia with its greatest variation in climate and topography
possesses one of the largest small ruminant populations in the
world, which is kept extensively mostly by small holder farm-
ers and adjacent to crop production [1, 2]. Small ruminants
represent an important segment of the Ethiopian livestock
system. Tey are important sources of income for the agricul-
tural communities and are one of the country major sources
of foreign currency through skin and meat export and are
among important sources of animal protein, providing 35% of
meat and 14% of milk consumption. Te national small rumi-
nant population is estimated to be 63 million heads, which
are raised in diferent agroecological regions of the country
[2]. However, the contribution from this huge population to
food production and export income is far below the expected
potential. Tis would be due to the compound efects of
several factors among which is ectoparasitism [1, 3].
Infestation by ectoparasites could lead to considerable
economic losses to farmers due to loss of productivity,
mortality, and skin diseases. Ectoparasites including lice,
sheep keds, ticks, feas, and mange mites are reported to cause
a wide range of health problems such as mechanical tissue
damage, irritation, infammation, hypersensitivity, abscesses,
weight loss, lameness, anaemia, and in severe cases death of
infested animals with the consequent socioeconomic impli-
cations [4–7]. In addition, ectoparasite infestations could
induce great economic losses due to reduction of wool quality,
meat and milk yield, and losses as a result of culling and
related with cost of treatment and prevention of the problem.
Tey are also responsible for great preslaughter skin defects,
resulting in downgrading and rejection of small ruminant
skins [8, 9]. According to tanneries reports, skin defects due
to ectoparasite efects cause 35% of sheep and 56% of goat skin
rejections in Ethiopia [10]. Moreover, ectoparasites are known
to have zoonotic importance and be capable of transmitting
Hindawi Publishing Corporation
Journal of Veterinary Medicine
Volume 2015, Article ID 216085, 6 pages
http://dx.doi.org/10.1155/2015/216085