Multispecies resistance of cattle gastrointestinal nematodes to long-acting avermectin formulations in Mato Grosso do Sul
•Long-acting avermectins were evaluated by an anthelmintic controlled test in cattle.•Multiple nematode species resistance to avermectins was detected.•The increase of avermectin concentration did not result in higher efficacy. The use of long-acting avermectins (AVMs) in cattle to treat infections...
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| Veröffentlicht in: | Veterinary parasitology 2015-09, Vol.212 (3-4), p.299-302 |
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| container_title | Veterinary parasitology |
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| creator | Borges, Fernando de Almeida Borges, Dyego Gonçalves Lino Heckler, Rafael Pereira Neves, Juliana Paniago Lordello Lopes, Fernando Gonçalves Onizuka, Marcel Kenzo Vilalba |
| description | •Long-acting avermectins were evaluated by an anthelmintic controlled test in cattle.•Multiple nematode species resistance to avermectins was detected.•The increase of avermectin concentration did not result in higher efficacy.
The use of long-acting avermectins (AVMs) in cattle to treat infections with gastrointestinal nematodes was common in Brazil until its prohibition by state authorities. The prohibition; however, was rescinded in 2015, but a scientific discussion of the pros and cons of the use of these formulations is necessary. We evaluated the levels of resistance to 1.0 and 3.5% doramectin and to 3.15% ivermectin in cattle. The worms in animals treated with 3.5% doramectin were characterized by the suppression of oviposition and by a higher proportion of adult females carrying no eggs. Haemonchus placei, Cooperia punctata, C. pectinata, C. spatulata, and Oesophagostomum radiatum were resistant to the above compositions. The administration of long-acting AVM formulations did not result in a higher efficacy against these helminth populations. |
| doi_str_mv | 10.1016/j.vetpar.2015.06.015 |
| format | Article |
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The use of long-acting avermectins (AVMs) in cattle to treat infections with gastrointestinal nematodes was common in Brazil until its prohibition by state authorities. The prohibition; however, was rescinded in 2015, but a scientific discussion of the pros and cons of the use of these formulations is necessary. We evaluated the levels of resistance to 1.0 and 3.5% doramectin and to 3.15% ivermectin in cattle. The worms in animals treated with 3.5% doramectin were characterized by the suppression of oviposition and by a higher proportion of adult females carrying no eggs. Haemonchus placei, Cooperia punctata, C. pectinata, C. spatulata, and Oesophagostomum radiatum were resistant to the above compositions. The administration of long-acting AVM formulations did not result in a higher efficacy against these helminth populations.</description><identifier>ISSN: 0304-4017</identifier><identifier>EISSN: 1873-2550</identifier><identifier>DOI: 10.1016/j.vetpar.2015.06.015</identifier><identifier>PMID: 26129974</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animals ; Brazil - epidemiology ; Cattle ; Cattle Diseases - epidemiology ; Cattle Diseases - parasitology ; Cooperia ; Doramectin ; Gastrointestinal Diseases - epidemiology ; Gastrointestinal Diseases - parasitology ; Gastrointestinal Diseases - veterinary ; Haemonchus placei ; Ivermectin ; Ivermectin - administration & dosage ; Ivermectin - analogs & derivatives ; Ivermectin - pharmacology ; Male ; Necropsy ; Nematoda - classification ; Nematoda - drug effects ; Nematode Infections - epidemiology ; Nematode Infections - parasitology ; Nematode Infections - veterinary</subject><ispartof>Veterinary parasitology, 2015-09, Vol.212 (3-4), p.299-302</ispartof><rights>2015 Elsevier B.V.</rights><rights>Copyright © 2015 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c362t-d6b43f74f26060319c0a97042d02c4b29bee23d8328205ba1df8e3297fea45903</citedby><cites>FETCH-LOGICAL-c362t-d6b43f74f26060319c0a97042d02c4b29bee23d8328205ba1df8e3297fea45903</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.vetpar.2015.06.015$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26129974$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Borges, Fernando de Almeida</creatorcontrib><creatorcontrib>Borges, Dyego Gonçalves Lino</creatorcontrib><creatorcontrib>Heckler, Rafael Pereira</creatorcontrib><creatorcontrib>Neves, Juliana Paniago Lordello</creatorcontrib><creatorcontrib>Lopes, Fernando Gonçalves</creatorcontrib><creatorcontrib>Onizuka, Marcel Kenzo Vilalba</creatorcontrib><title>Multispecies resistance of cattle gastrointestinal nematodes to long-acting avermectin formulations in Mato Grosso do Sul</title><title>Veterinary parasitology</title><addtitle>Vet Parasitol</addtitle><description>•Long-acting avermectins were evaluated by an anthelmintic controlled test in cattle.•Multiple nematode species resistance to avermectins was detected.•The increase of avermectin concentration did not result in higher efficacy.
The use of long-acting avermectins (AVMs) in cattle to treat infections with gastrointestinal nematodes was common in Brazil until its prohibition by state authorities. The prohibition; however, was rescinded in 2015, but a scientific discussion of the pros and cons of the use of these formulations is necessary. We evaluated the levels of resistance to 1.0 and 3.5% doramectin and to 3.15% ivermectin in cattle. The worms in animals treated with 3.5% doramectin were characterized by the suppression of oviposition and by a higher proportion of adult females carrying no eggs. Haemonchus placei, Cooperia punctata, C. pectinata, C. spatulata, and Oesophagostomum radiatum were resistant to the above compositions. The administration of long-acting AVM formulations did not result in a higher efficacy against these helminth populations.</description><subject>Animals</subject><subject>Brazil - epidemiology</subject><subject>Cattle</subject><subject>Cattle Diseases - epidemiology</subject><subject>Cattle Diseases - parasitology</subject><subject>Cooperia</subject><subject>Doramectin</subject><subject>Gastrointestinal Diseases - epidemiology</subject><subject>Gastrointestinal Diseases - parasitology</subject><subject>Gastrointestinal Diseases - veterinary</subject><subject>Haemonchus placei</subject><subject>Ivermectin</subject><subject>Ivermectin - administration & dosage</subject><subject>Ivermectin - analogs & derivatives</subject><subject>Ivermectin - pharmacology</subject><subject>Male</subject><subject>Necropsy</subject><subject>Nematoda - classification</subject><subject>Nematoda - drug effects</subject><subject>Nematode Infections - epidemiology</subject><subject>Nematode Infections - parasitology</subject><subject>Nematode Infections - veterinary</subject><issn>0304-4017</issn><issn>1873-2550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kM1u1DAUhS1ERaeFN0DISzYJ145jTzZIqIK2UisWhbXl2Dcjj5x4sJ2R-vZ4NKVLVsdXPuf-fIR8ZNAyYPLLvj1iOZjUcmB9C7Kt8oZs2FZ1De97eEs20IFoBDB1Sa5y3gOAAKnekUsuGR8GJTbk-XENxecDWo-ZJsw-F7NYpHGi1pQSkO5MLin6pWAufjGBLjibEl31l0hDXHaNsfVnR80R04ynN51imtdgio9LprV-rAl6m2LOkbpIn9bwnlxMJmT88KLX5PeP779u7pqHn7f3N98eGttJXhonR9FNSkxcgoSODRbMoEBwB9yKkQ8jIu_ctuNbDv1omJu22PFBTWhEP0B3TT6f-x5S_LPWG_Tss8UQzIJxzZopVlEoJoZqFWerPS2acNKH5GeTnjUDfYKu9_oMXZ-ga5C6So19epmwjjO619A_ytXw9WzAeufRY9K54q6UnU8Vl3bR_3_CXwmul0A</recordid><startdate>20150915</startdate><enddate>20150915</enddate><creator>Borges, Fernando de Almeida</creator><creator>Borges, Dyego Gonçalves Lino</creator><creator>Heckler, Rafael Pereira</creator><creator>Neves, Juliana Paniago Lordello</creator><creator>Lopes, Fernando Gonçalves</creator><creator>Onizuka, Marcel Kenzo Vilalba</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20150915</creationdate><title>Multispecies resistance of cattle gastrointestinal nematodes to long-acting avermectin formulations in Mato Grosso do Sul</title><author>Borges, Fernando de Almeida ; 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The use of long-acting avermectins (AVMs) in cattle to treat infections with gastrointestinal nematodes was common in Brazil until its prohibition by state authorities. The prohibition; however, was rescinded in 2015, but a scientific discussion of the pros and cons of the use of these formulations is necessary. We evaluated the levels of resistance to 1.0 and 3.5% doramectin and to 3.15% ivermectin in cattle. The worms in animals treated with 3.5% doramectin were characterized by the suppression of oviposition and by a higher proportion of adult females carrying no eggs. Haemonchus placei, Cooperia punctata, C. pectinata, C. spatulata, and Oesophagostomum radiatum were resistant to the above compositions. The administration of long-acting AVM formulations did not result in a higher efficacy against these helminth populations.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>26129974</pmid><doi>10.1016/j.vetpar.2015.06.015</doi><tpages>4</tpages></addata></record> |
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| ispartof | Veterinary parasitology, 2015-09, Vol.212 (3-4), p.299-302 |
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| subjects | Animals Brazil - epidemiology Cattle Cattle Diseases - epidemiology Cattle Diseases - parasitology Cooperia Doramectin Gastrointestinal Diseases - epidemiology Gastrointestinal Diseases - parasitology Gastrointestinal Diseases - veterinary Haemonchus placei Ivermectin Ivermectin - administration & dosage Ivermectin - analogs & derivatives Ivermectin - pharmacology Male Necropsy Nematoda - classification Nematoda - drug effects Nematode Infections - epidemiology Nematode Infections - parasitology Nematode Infections - veterinary |
| title | Multispecies resistance of cattle gastrointestinal nematodes to long-acting avermectin formulations in Mato Grosso do Sul |
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