2016
DOI: 10.1111/avj.12407
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Anthelmintic resistance in gastrointestinal nematodes of dairy cattle in the Macalister Irrigation District of Victoria

Abstract: This is the first report of anthelmintic-resistant O. ostertagi on Australian dairy farms. Resistance to all three available anthelmintic classes is of concern, given the high pathogenicity of this species. The study highlights the need for veterinarians and dairy farmers to be aware of the risks posed by anthelmintic resistance.

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Cited by 20 publications
(32 citation statements)
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“…A forma adulta de O. ostertagi é delgada e atinge até 1 cm, encontrada na mucosa do abomaso. Esta espécie causa hiperplasia da mucosa do estômago causando queda no número de células parietais e pépticas, que por conseguinte, reduz a absorção de nutrientes, podendo causar queda no desempenho, perda de peso, inapetência, diarreia aquosa, desidratação e morte do animal (Bullen et al, 2016).…”
Section: Ostertagia Sppunclassified
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“…A forma adulta de O. ostertagi é delgada e atinge até 1 cm, encontrada na mucosa do abomaso. Esta espécie causa hiperplasia da mucosa do estômago causando queda no número de células parietais e pépticas, que por conseguinte, reduz a absorção de nutrientes, podendo causar queda no desempenho, perda de peso, inapetência, diarreia aquosa, desidratação e morte do animal (Bullen et al, 2016).…”
Section: Ostertagia Sppunclassified
“…Seu mecanismo de ação promove ligação à tubulina, que causa despolimerização, prejudicando a função celular, além de alterar a divisão mitótica e transporte de nutrientes, que promove o esgotamento das reservas energéticas pela diminuição no metabolismo da glicose, ocasionando a morte do parasita (Bullen et al, 2016).…”
Section: Benzimidazóisunclassified
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“…Heavy reliance on anthelmintics in cattle and other livestock has led to widespread reports of resistance to all available classes in many gastrointestinal nematode parasites . This is an issue of growing importance globally, because of its potentially major production and animal welfare implications.…”
Section: Production Animalsmentioning
confidence: 99%
“…The nature and extent of internal parasite problems in cattle is quite different, and has not been an area of research focus to the extent of that in small ruminants. However, there is strong evidence for the emergence of resistance of various GIN of cattle to drugs used for their control ( Cotter et al, 2015 , Rose et al, 2015 , Bullen et al, 2016 , Fiel et al, 2017 , Kalmobe et al, 2017 ). It is expected that in the long term, many of the same problems presented by anthelmintic resistance of GIN in small ruminants will be prominent in the production of beef in many parts of the world ( Gasbarre, 2014 , Cristel et al, 2017 , Wang et al, 2017 ).…”
Section: Introductionmentioning
confidence: 99%