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A Study on the Time of Ovicidal Effect of Some Anthelmintics in Djallonke Sheep and Its Implication for the Control of Parasitic Helminth Infections
Author(s) -
AGYEI A. D.
Publication year - 2000
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2000.tb05317.x
Subject(s) - feces , helminths , biology , nematode , veterinary medicine , toxicology , medicine , zoology , microbiology and biotechnology , ecology
A bstract : The time lag between the administration of five different anthelmintics and the exertion of their ovicidal effect on worm eggs was monitored in five groups of Djallonke sheep. In this experiment, all the animals in all treated groups and an untreated control group were grazed together. Worm egg output and the number of infective strongylate nematode larvæ (L 3 s) recovered from fecal cultures from each group were observed every four hours for 72 h. The earliest time observed for the occurrence of ovicidal effect resulting in the absence of L 3 s in fecal cultures was 8 h after the administration of the anthelmintics. However, this time was not the same for all the anthelmintics. The implication of the results are discussed in relation to its application for worm control.