A study on the time of ovicidal effect of some anthelmintics in Djallonke sheep and its implication for the control of parasitic helminth infections.
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 larvae (L3s) 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 L3s 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.
Agyei
A D
AD
Animal Research Institute (CSIR), P.O. Box AH 20, Achimota, Ghana. ari@africanonline.com.gh
D015766:Albendazole / Q000627:therapeutic use; D000818:Animals; D000871:Anthelmintics / Q000627:therapeutic use*; D006374:Helminthiasis, Animal / Q000517:prevention & control*; D010270:Parasite Egg Count / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control*; D017206:Strongylida Infections / Q000517:prevention & control / Q000662:veterinary*
D000871:Anthelmintics; D015766:Albendazole