Evaluation of tea tree oil for controlling Rhipicephalus microplus in dairy cows

•In vitro tests was verified that tea tree oil (TTO) at 5 and 10% had 100% of effectiveness in the controlling ticks.•In vitro tests, pure TTO when used in dairy cows infested by ticks, showed an acaricide effect.•The nanocapsules of TTO lightly interfered the reproduction of these parasites. Our re...

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Veröffentlicht in:Veterinary parasitology 2016-07, Vol.225, p.70-72
Hauptverfasser: Pazinatto Boito, Jhonatan, Santos, Roberto C., Vaucher, Rodrigo A., Raffin, Renata, Machado, Gustavo, Tonin, Alexandre A., Da Silva, Aleksandro S.
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container_end_page 72
container_issue
container_start_page 70
container_title Veterinary parasitology
container_volume 225
creator Pazinatto Boito, Jhonatan
Santos, Roberto C.
Vaucher, Rodrigo A.
Raffin, Renata
Machado, Gustavo
Tonin, Alexandre A.
Da Silva, Aleksandro S.
description •In vitro tests was verified that tea tree oil (TTO) at 5 and 10% had 100% of effectiveness in the controlling ticks.•In vitro tests, pure TTO when used in dairy cows infested by ticks, showed an acaricide effect.•The nanocapsules of TTO lightly interfered the reproduction of these parasites. Our research aimed to test the effects of Melaleuca alternifolia oil (pure and in nanocapsules) in the control of Rhipicephalus microplus in dairy cattle. For this purpose, the in vivo studies used 15 cows distributed in three different groups with the same number of animals. Five cows remained untreated (Group A), representing the control group; other five cows were sprayed with TTO (at 5%) in its pure form (Group B); and five cows were sprayed with nanocapsules of TTO (at 0.75%) (Group C). On days 1 and 4 post-treatments (PT), all cows had their ticks counted. On day 1 PT, two ticks from each cow were collected to evaluate the effect of the treatment on ticḱs reproduction (in vitro assays). The pure form of TTO caused a significant reduction (P0.05). Treatment with TTO in nanocapsules (Group C) interfered with R. microplus reproduction, leading to lower oviposition by female ticks and hatchability (34.5% of efficacy). On the other hand, TTO oil (Group B) did not interfere on ticḱs reproduction, i.e. showed higher hatchability than the control group. Therefore, it is possible to conclude that pure TTO has an acaricidal effect in dairy cows, in addition to an effect on ticḱs reproduction when used its nanocapsulated form.
doi_str_mv 10.1016/j.vetpar.2016.05.031
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Our research aimed to test the effects of Melaleuca alternifolia oil (pure and in nanocapsules) in the control of Rhipicephalus microplus in dairy cattle. For this purpose, the in vivo studies used 15 cows distributed in three different groups with the same number of animals. Five cows remained untreated (Group A), representing the control group; other five cows were sprayed with TTO (at 5%) in its pure form (Group B); and five cows were sprayed with nanocapsules of TTO (at 0.75%) (Group C). On days 1 and 4 post-treatments (PT), all cows had their ticks counted. On day 1 PT, two ticks from each cow were collected to evaluate the effect of the treatment on ticḱs reproduction (in vitro assays). The pure form of TTO caused a significant reduction (P&lt;0.05) in the number of ticks from the Group B compared to the Group A on day 4 PT. However, there was no significant difference in the number of ticks on cows from Groups A and C after treatment (P&gt;0.05). Treatment with TTO in nanocapsules (Group C) interfered with R. microplus reproduction, leading to lower oviposition by female ticks and hatchability (34.5% of efficacy). On the other hand, TTO oil (Group B) did not interfere on ticḱs reproduction, i.e. showed higher hatchability than the control group. 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Treatment with TTO in nanocapsules (Group C) interfered with R. microplus reproduction, leading to lower oviposition by female ticks and hatchability (34.5% of efficacy). On the other hand, TTO oil (Group B) did not interfere on ticḱs reproduction, i.e. showed higher hatchability than the control group. 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source MEDLINE; Elsevier ScienceDirect Journals Collection
subjects Acaricides - pharmacology
Acaricides - therapeutic use
Animals
Cattle
Cattle Diseases - drug therapy
Cattle Diseases - prevention & control
Drug resistance
Female
Ixodidae
Melaleuca
Melaleuca alternifolia
Nanotechnology
Oviposition - drug effects
Reproduction - drug effects
Rhipicephalus
Rhipicephalus - drug effects
Tea Tree Oil - pharmacology
Tea Tree Oil - therapeutic use
Tick
Tick Control - methods
Tick Infestations - drug therapy
Tick Infestations - prevention & control
Tick Infestations - veterinary
Treatment Outcome
title Evaluation of tea tree oil for controlling Rhipicephalus microplus in dairy cows
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