Effect of repeated wattle tannin drenches on worm burdens, faecal egg counts and egg hatchability during naturally acquired nematode infections in sheep and goats

Veterinary Parasitology
R A Max

Abstract

In vivo and in vitro experiments were carried out to investigate the effect of repeated wattle tannin (WT) drenches on faecal egg counts (FEC), worm burdens and egg hatchability during a naturally acquired worm infection in sheep and goats. For the in vivo experiment, nematode-infected sheep and goats were orally drenched with WT at a dose of 1.3g and 1.6gWT/kg bodyweight per day for three consecutive days respectively while a control group received a placebo. FEC and other worm infection parameters were monitored regularly. Once a surge in faecal egg profiles was evident the drenching exercise was repeated as explained above. The trials were terminated by humane slaughter of all the animals and estimation of worm burdens recovered from their guts. WT drench did not, significantly, reduce FEC or total worm burdens in goats. However, there was a slight reduction in FEC and a significant reduction in Haemonchus contortus worm burdens in sheep. WT drenches were also associated with increased faecal water and mucus contents. The in vitro work involved the use of an egg hatch assay using faeces from WT-drenched and un-drenched goats. A dose-response experiment whereby goat faeces were spiked with different levels of WT and then cult...Continue Reading

References

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Citations

Apr 6, 2011·Parasitology Research·Lorena Mayana Beserra de OliveiraMayara de Aquino Mesquita
May 2, 2012·Tropical Animal Health and Production·Etana DebelaRagnar Salte
Dec 14, 2011·Veterinary Parasitology·Jos G M HoudijkSpiridoula Athanasiadou
Jan 11, 2011·The Veterinary Clinics of North America. Food Animal Practice·Hervé HosteJuan Felipe de Jesús Torres-Acosta
Sep 6, 2011·Veterinary Parasitology·Maria Vivina B MonteiroMayara de A Mesquita
Aug 21, 2016·The Onderstepoort Journal of Veterinary Research·Gerda FoucheJacobus N Eloff
Oct 9, 2015·Revista brasileira de parasitologia veterinária = Brazilian journal of veterinary parasitology : Órgão Oficial do Colégio Brasileiro de Parasitologia Veterinária·Iara Tersia Freitas MacedoClaudia Maria Leal Bevilaqua
May 21, 2019·Parasitology·Francianne Oliveira SantosMariana Borges Botura

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