alexa The anthelmintic efficacy of the plant, Albizia anthelmintica, against the nematode parasites Haemonchus contortus of sheep and Heligmosomoides polygyrus of mice.
Agri and Aquaculture

Agri and Aquaculture


Author(s): Githiori JB, Hglund J, Waller PJ, Baker RL

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Abstract Albizia anthelmintica Brong., belongs to the plant family Mimosaceae. The plant is widely used in East Africa by poor smallholder farmers and pastoralists to treat their livestock against internal parasites. The anthelmintic effects of water extracts from the bark of A. anthelmintica, obtained from three different geographic areas in Kenya and using different methods of preparation, were tested at different doses in sheep and mice infected with the nematode parasites Haemonchus contortus and Heligmosomoides polygyrus, respectively. Lambs were infected with 3000 infective larvae of H. contortus and treated with the plant preparations 28 days later, while mice were infected with 200 infective larvae of H. polygyrus and treated 18 days later. Proximate analysis established high levels of crude proteins in A. anthelmintica bark. Two sheep out of the 45 treated with the plant preparations suffered from transient bloat, which was relieved by dosing with a surfactant. Significant reductions in faecal egg counts were observed in lambs treated with A. anthelmintica in two of the three experiments undertaken, but the efficacy levels achieved were well below the 70\% reduction required. Similar values of packed red cell volume and live weight gain were observed for treated and control lambs. There was no overall significant effect of treatment with A. anthelmintica on faecal egg and total worm counts in mice. A dose rate of 1000 mg/kg bodyweight of A. anthelmintica preparation resulted in death of all mice. The results show that A. anthelmintica at the doses and preparations used is not efficacious against H. contortus in sheep or against H. polygyrus in mice.
This article was published in Vet Parasitol and referenced in Agrotechnology

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