Abstract
The objective of this study was to determine the antiparasitic efficiency of herbal-based products. Four medicinal plant species extracts in 10% ethanol solutions (hogweed Heracleum sosnowskyi Manden, mugwort Artemisia vulgaris L., tansy Tanacetum vulgare L., wormwood Artemisia absinthium L.), and seven essential medicinal ethereal oils used in 1% emulsions (garlic Allium sativum L., black pepper Piper nigrum L., juniper Juniperus communis L., citronella grass Cymbopogon nardus Rendle, pennyroyal Mentha pulegium L., eucalyptus Eucalyptus globulus Labill., tea tree Melaleuca alternifolia Gheel) were tested a on pig farm in Estonia to control swine sarcoptic mange mites (Sarcoptes scabiei var. suis (L. 1758) Latreille, 1802). Trial groups (6 pigs each) were treated over the whole body twice, with one week interval in between; one group was left as untreated control. All the preparations used inhibited the development of and were more or less lethal to mange mites. Tea tree and citronella volatile oil preparations proved to be the most effective (viability of mites < 5% in 4 weeks). The most active extract of tested ethanol solutions was obtained from hogweed seeds: after two treatments of pigs, 57-93% of parasites died in 2-4 weeks. The extracts of local plants tansy and wormwood diminished the number of mites up to 44% within the first week after treatments. The results indicate that plant extracts may be further tested in practice as alternatives to drugs of synthetic origin.
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