Studies Of Various Strains Of Echinococcus Granulosus In Livestock In Libya: Prevlence, Ultra-Structure, And Genotypes Of Hydatid Cysts.
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Date
2013
Authors
Omran Elmajdoub, Layla
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Hydatidosis of livestock is a widespread parasitic infection; Libya is not
an exception. A total number of 32,971 livestock from different regions in Libya was
examined for the prevalence rate. Morphological and molecular characterizations of
E. granulosus isolates were also examined. the total prevalence rate in all study areas
was 10.97%: 19.2% from sheep, 12.5% in the camels and 10.6% from cattle. The
seasonal variations in the prevalence rates were almost similar in all three animals.
Typically, the infection rates of hydatid cysts increased with age. Livers and lungs
were the most commonly infected organs (43.1% and 42.1% respectively). The
viability rates of fertile hydatid cysts in sheep and camels were 76.1% and 75.2%
respectively with significant differences (P≤ 001) between them. The largest cyst
size was found in the liver of camels (12.4 cm).
The large and small hooks of protoscoleces were measured for their total,
blade, and handle lengths as well as the width. From sheep, significant differences (P
≤ 0.01) between total lengths from different organs were seen. But based on the
Discriminant Function Analysis (DFA), the differentiation in the liver and lung was
low, but some lengths on spleen and mesentery with slightly high differentiation.
For camels, significant differences (P ≤ 0.01) were seen between different organs.
based on the DFA. The differences in the liver and lung were strong, but in the
spleen it was low with most of them were distributed in the lungs. Tiny hooks were
seen, denoting a possible presence of complete or incomplete third rostellar hooks.
Description
Keywords
Echinococcus Granulosus , Hydatid Cysts