Studies on coccidiosis and Cryptosporidiosis in Small Ruminants at Elfora Export Abattior and in and Around Debre - Zeit ,Ethiopia
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Date
2006-06
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Addis Ababa University Faculty Of Veterinary Medicine
Abstract
A cross secti onal study on cocci odi osis and cryptosporidiosis in small ruminants at
ELF ORA export abattoir and in & around Debre-zeit wa s conducted from October, 2005
to February. 2006. In this stu dy, att empt s we re made to det ennine th e preval ence and
intensity of Eimeria an d Cryplosporidi ll m infection in shee p and goats. Mo re over.
potential risk factors associated with the infecti ons and the species of Eimeria and
Cf)prosporidillm incrimi nated in the infect ions were identi ti ed. A total of 1152 faeca l
samples (384 from animals inten ded for slaughte r at ELF ORA ex port abattoi r and 768
samples from those reared under extensive condi tion of Dch re-zeit and its surrounding
areas) were collected and examined by faecal flo tati on using co ncentrated sugar sol ut ion
(Sheather's sugar solution) to detect the oocysts of Eimeria and c,yptosporilldillm
species. Faecal samples suspected of O),ptosporidillm were also examined under a
mic roscope using modified Kinyoun acid· fas t staining tec hniq ue. Measurement
(Micrometery) of oocysts to identify the species involved in the infections and
detennination ofoocysts per gram of faeces (O PG) were also conducted. Out of the 1152
faecal samples collected and examined. 346(49°'0) ovinc and 173(38.5%) caprine were
found to be infected with Eimeria species. Only four (0.57°0) faecal samples collected
from sheep were infected wi th Cryptosporidillf1l (mdcrsoni. At Debrc·Zeit and its
su rroundings, 37.8% and 0.5°0 prevalence of Eimeria and Cryprosporidillm infections
were respectively regi~iered . While 59.6°'0 and 0 prevalence of Eimeria and
O)'prosporidillm infections were reco rded respectively at ELFORA. Stali stically. a
significant variation (P <O.OOI) in the prevalence rate of Eimeria infection between the
stud y areas. between animal hosts. among the months of the study period and between
difTerent age groups was observed. However. there was no significant difference
(P >O.05) observed in the prevalence rate of Eimeria infect ion between the two sexes of
the study anima ls. There was no significan t varia ti on ( P>O.0 5) observed in the
pre\,alence of CrYPlosporidiwJl infection between (he two study sites. animal hosts.
animal sex, between age groups and among the months of the study period . There was no
significant variation (P >O.0 5) observed in the mean OPG values of Eimeria
between the
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two age groups of the study animals. High and low mean OPG values of Eimeria oocysts
in November and December were respecivly recorded
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Keywords
Coccidiosis! Cryptosp oridiosis /Small rumi"antsiELFORA e.l:port abanoir/ Dere-Zeit & its surroundings