Study On Ogaden Small Ruminant Haemonchosis Morphological Characterization And Susceptibility To Albendazole And Tetramisole

The current study was conducted from August 2003 to March 2004 with an attempt torndetermine the prevalence, morphological characteristics and susceptibility of Ogaden isolaternof H. contortus to Albendazole and Tetramisole. During the study period a total of 196rnanimals (114 sheep and 82 goats) of Ogaden origin were examined. The overall prevalence ofrnHaemonchus species was 91.23% and 82.93 % in sheep and goats respectively. Where asrn37.72% and 40.24% prevalence of Trichostrongylus. axei was recorded in sheep and goatsrnrespectively. Statistically significant difference (p < 0.05) was observed between differentrnmonths of the study period for both abomasal parasites. Out of 3187 female Haemonchusrnworms recovered from sheep for vulvar morph study, 49.49%linguiform, 28.51% knobbedrnand 23% smooth were recorded. Similarly from goats out of 2386 female Haemonchus,rn53.83%linguiform, 18.45% knobbed and 27.61% smooth were recorded. Statisticallyrnsignificant difference (p < 0.05) was observed among the three major vulvar flaps betweenrndifferent months of the study period in both sheep and goats. A total of 1580 linguiformrnfemale Haemonchus from sheep were further classified and differentiated into 27.16%A,rn14.80% B, and 5.34%C and 2.18%I. Similarly from goat a total of 1285 linguiform femalernHaemonchus were identified as 27.35 % A, 17.54% B, and 6.63% C and 2.31% I. With in thernlinguiform morphotypes, the A type linguiform was noted to exhibit monthly fluctuation (p

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