Avermectin-resistance in gastrointestinal nematodes of Boer goats and Dorper sheep in Switzerland
Anthelmintic resistance in gastrointestinal nematodes among small ruminants is widespread in South Africa and Dorper sheep and Boer goats have been imported into Switzerland from this country on a number of occasions. Therefore, this study aimed to investigate the occurrence of avermectin (AVM) resi...
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| Veröffentlicht in: | Veterinary parasitology 2007-03, Vol.144 (1), p.68-73 |
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| creator | Artho, R. Schnyder, M. Kohler, L. Torgerson, P.R. Hertzberg, H. |
| description | Anthelmintic resistance in gastrointestinal nematodes among small ruminants is widespread in South Africa and Dorper sheep and Boer goats have been imported into Switzerland from this country on a number of occasions. Therefore, this study aimed to investigate the occurrence of avermectin (AVM) resistant gastrointestinal nematodes (GIN) in these breeds in Switzerland. A total of 24 Boer goat farms and 12 Dorper sheep farms participated in the study. According to the faecal egg count reduction test (FECRT) AVM-resistant GIN populations were confirmed in 7 of the 24 Boer goat farms and suspected in a further 8 farms. Likewise AVM-resistance was confirmed in 2 of 12 Dorper sheep farms and suspected in a further 6 farms.
Haemonchus contortus and
Trichostrongylus spp
. were the dominant resistant species according to larval cultures. In the farms with detected AVM-resistance the animals were additionally treated with levamisole after natural reinfection. With the exception of one farm with a ‘close-to cutoff-result’ the FECRT gave no indication for resistance against levamisole. The results indicate that AVM-resistance is widespread in Swiss small ruminant farms keeping Boer goats and Dorper sheep. The common tradition of grazing animals from different farms on prealpine and alpine pastures could favour the spread of resistant populations within the country. |
| doi_str_mv | 10.1016/j.vetpar.2006.09.032 |
| format | Article |
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Haemonchus contortus and
Trichostrongylus spp
. were the dominant resistant species according to larval cultures. In the farms with detected AVM-resistance the animals were additionally treated with levamisole after natural reinfection. With the exception of one farm with a ‘close-to cutoff-result’ the FECRT gave no indication for resistance against levamisole. The results indicate that AVM-resistance is widespread in Swiss small ruminant farms keeping Boer goats and Dorper sheep. The common tradition of grazing animals from different farms on prealpine and alpine pastures could favour the spread of resistant populations within the country.</description><identifier>ISSN: 0304-4017</identifier><identifier>EISSN: 1873-2550</identifier><identifier>DOI: 10.1016/j.vetpar.2006.09.032</identifier><identifier>PMID: 17088023</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animal Husbandry - methods ; Animals ; Anthelmintic resistance ; anthelmintics ; Antinematodal Agents - pharmacology ; Avermectins ; Boer ; Dorper ; Drug Resistance ; faecal egg count reduction test ; fecal egg count ; Feces - parasitology ; Female ; Gastrointestinal nematodes ; Goat Diseases - drug therapy ; Goat Diseases - parasitology ; Goats ; imports ; Ivermectin - analogs & derivatives ; Ivermectin - pharmacology ; Levamisole - pharmacology ; Male ; Nematode Infections - drug therapy ; Nematode Infections - parasitology ; Nematode Infections - veterinary ; Parasite Egg Count - veterinary ; Parasitic Sensitivity Tests - veterinary ; Sheep ; Sheep Diseases - drug therapy ; Sheep Diseases - parasitology ; Small ruminants ; Surveys and Questionnaires ; Switzerland ; Treatment Outcome</subject><ispartof>Veterinary parasitology, 2007-03, Vol.144 (1), p.68-73</ispartof><rights>2006 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c430t-4210f762ea50b3332739b63c66779789b2696dd56572b0109454c46a3c475cf93</citedby><cites>FETCH-LOGICAL-c430t-4210f762ea50b3332739b63c66779789b2696dd56572b0109454c46a3c475cf93</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.2006.09.032$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27911,27912,45982</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17088023$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Artho, R.</creatorcontrib><creatorcontrib>Schnyder, M.</creatorcontrib><creatorcontrib>Kohler, L.</creatorcontrib><creatorcontrib>Torgerson, P.R.</creatorcontrib><creatorcontrib>Hertzberg, H.</creatorcontrib><title>Avermectin-resistance in gastrointestinal nematodes of Boer goats and Dorper sheep in Switzerland</title><title>Veterinary parasitology</title><addtitle>Vet Parasitol</addtitle><description>Anthelmintic resistance in gastrointestinal nematodes among small ruminants is widespread in South Africa and Dorper sheep and Boer goats have been imported into Switzerland from this country on a number of occasions. Therefore, this study aimed to investigate the occurrence of avermectin (AVM) resistant gastrointestinal nematodes (GIN) in these breeds in Switzerland. A total of 24 Boer goat farms and 12 Dorper sheep farms participated in the study. According to the faecal egg count reduction test (FECRT) AVM-resistant GIN populations were confirmed in 7 of the 24 Boer goat farms and suspected in a further 8 farms. Likewise AVM-resistance was confirmed in 2 of 12 Dorper sheep farms and suspected in a further 6 farms.
Haemonchus contortus and
Trichostrongylus spp
. were the dominant resistant species according to larval cultures. In the farms with detected AVM-resistance the animals were additionally treated with levamisole after natural reinfection. With the exception of one farm with a ‘close-to cutoff-result’ the FECRT gave no indication for resistance against levamisole. The results indicate that AVM-resistance is widespread in Swiss small ruminant farms keeping Boer goats and Dorper sheep. The common tradition of grazing animals from different farms on prealpine and alpine pastures could favour the spread of resistant populations within the country.</description><subject>Animal Husbandry - methods</subject><subject>Animals</subject><subject>Anthelmintic resistance</subject><subject>anthelmintics</subject><subject>Antinematodal Agents - pharmacology</subject><subject>Avermectins</subject><subject>Boer</subject><subject>Dorper</subject><subject>Drug Resistance</subject><subject>faecal egg count reduction test</subject><subject>fecal egg count</subject><subject>Feces - parasitology</subject><subject>Female</subject><subject>Gastrointestinal nematodes</subject><subject>Goat Diseases - drug therapy</subject><subject>Goat Diseases - parasitology</subject><subject>Goats</subject><subject>imports</subject><subject>Ivermectin - analogs & derivatives</subject><subject>Ivermectin - pharmacology</subject><subject>Levamisole - pharmacology</subject><subject>Male</subject><subject>Nematode Infections - drug therapy</subject><subject>Nematode Infections - parasitology</subject><subject>Nematode Infections - veterinary</subject><subject>Parasite Egg Count - veterinary</subject><subject>Parasitic Sensitivity Tests - veterinary</subject><subject>Sheep</subject><subject>Sheep Diseases - drug therapy</subject><subject>Sheep Diseases - parasitology</subject><subject>Small ruminants</subject><subject>Surveys and Questionnaires</subject><subject>Switzerland</subject><subject>Treatment Outcome</subject><issn>0304-4017</issn><issn>1873-2550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kc1v1DAQxS1ERZfCf4Agp94Sxh-x4wtSafmSKnEoPVuOM1m82sTB9i6ifz1eZSVunEaaee_p6TeEvKHQUKDy_a45Yl5sbBiAbEA3wNkzsqGd4jVrW3hONsBB1AKouiQvU9oBgACpXpBLqqDrgPENsTdHjBO67Oc6YvIp29lh5edqa1OOwc8ZUznafTXjZHMYMFVhrD4GjNU22JwqOw_VXYhLWaSfiMvJ_PDb5yeM-3J7RS5Gu0_4-jyvyOPnTz9uv9b33798u725r53gkGvBKIxKMrQt9JxzprjuJXdSKqVVp3smtRyGVraK9UBBi1Y4IS13QrVu1PyKXK-5Swy_DqW0mXxyuC8dMBySkZ3uJChRhGIVuhhSijiaJfrJxj-GgjmhNTuzojUntAa0KWiL7e05_9BPOPwznVkWwbtVMNpg7Db6ZB4fGFAOoFpg4hTxYVVg4XD0GE1yHgvvwcfyAjME__8OfwEUrZU_</recordid><startdate>20070315</startdate><enddate>20070315</enddate><creator>Artho, R.</creator><creator>Schnyder, M.</creator><creator>Kohler, L.</creator><creator>Torgerson, P.R.</creator><creator>Hertzberg, H.</creator><general>Elsevier B.V</general><scope>FBQ</scope><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>20070315</creationdate><title>Avermectin-resistance in gastrointestinal nematodes of Boer goats and Dorper sheep in Switzerland</title><author>Artho, R. ; Schnyder, M. ; Kohler, L. ; Torgerson, P.R. ; Hertzberg, H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c430t-4210f762ea50b3332739b63c66779789b2696dd56572b0109454c46a3c475cf93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Animal Husbandry - methods</topic><topic>Animals</topic><topic>Anthelmintic resistance</topic><topic>anthelmintics</topic><topic>Antinematodal Agents - pharmacology</topic><topic>Avermectins</topic><topic>Boer</topic><topic>Dorper</topic><topic>Drug Resistance</topic><topic>faecal egg count reduction test</topic><topic>fecal egg count</topic><topic>Feces - parasitology</topic><topic>Female</topic><topic>Gastrointestinal nematodes</topic><topic>Goat Diseases - drug therapy</topic><topic>Goat Diseases - parasitology</topic><topic>Goats</topic><topic>imports</topic><topic>Ivermectin - analogs & derivatives</topic><topic>Ivermectin - pharmacology</topic><topic>Levamisole - pharmacology</topic><topic>Male</topic><topic>Nematode Infections - drug therapy</topic><topic>Nematode Infections - parasitology</topic><topic>Nematode Infections - veterinary</topic><topic>Parasite Egg Count - veterinary</topic><topic>Parasitic Sensitivity Tests - veterinary</topic><topic>Sheep</topic><topic>Sheep Diseases - drug therapy</topic><topic>Sheep Diseases - parasitology</topic><topic>Small ruminants</topic><topic>Surveys and Questionnaires</topic><topic>Switzerland</topic><topic>Treatment Outcome</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Artho, R.</creatorcontrib><creatorcontrib>Schnyder, M.</creatorcontrib><creatorcontrib>Kohler, L.</creatorcontrib><creatorcontrib>Torgerson, P.R.</creatorcontrib><creatorcontrib>Hertzberg, H.</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Veterinary parasitology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Artho, R.</au><au>Schnyder, M.</au><au>Kohler, L.</au><au>Torgerson, P.R.</au><au>Hertzberg, H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Avermectin-resistance in gastrointestinal nematodes of Boer goats and Dorper sheep in Switzerland</atitle><jtitle>Veterinary parasitology</jtitle><addtitle>Vet Parasitol</addtitle><date>2007-03-15</date><risdate>2007</risdate><volume>144</volume><issue>1</issue><spage>68</spage><epage>73</epage><pages>68-73</pages><issn>0304-4017</issn><eissn>1873-2550</eissn><abstract>Anthelmintic resistance in gastrointestinal nematodes among small ruminants is widespread in South Africa and Dorper sheep and Boer goats have been imported into Switzerland from this country on a number of occasions. Therefore, this study aimed to investigate the occurrence of avermectin (AVM) resistant gastrointestinal nematodes (GIN) in these breeds in Switzerland. A total of 24 Boer goat farms and 12 Dorper sheep farms participated in the study. According to the faecal egg count reduction test (FECRT) AVM-resistant GIN populations were confirmed in 7 of the 24 Boer goat farms and suspected in a further 8 farms. Likewise AVM-resistance was confirmed in 2 of 12 Dorper sheep farms and suspected in a further 6 farms.
Haemonchus contortus and
Trichostrongylus spp
. were the dominant resistant species according to larval cultures. In the farms with detected AVM-resistance the animals were additionally treated with levamisole after natural reinfection. With the exception of one farm with a ‘close-to cutoff-result’ the FECRT gave no indication for resistance against levamisole. The results indicate that AVM-resistance is widespread in Swiss small ruminant farms keeping Boer goats and Dorper sheep. The common tradition of grazing animals from different farms on prealpine and alpine pastures could favour the spread of resistant populations within the country.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>17088023</pmid><doi>10.1016/j.vetpar.2006.09.032</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Animal Husbandry - methods Animals Anthelmintic resistance anthelmintics Antinematodal Agents - pharmacology Avermectins Boer Dorper Drug Resistance faecal egg count reduction test fecal egg count Feces - parasitology Female Gastrointestinal nematodes Goat Diseases - drug therapy Goat Diseases - parasitology Goats imports Ivermectin - analogs & derivatives Ivermectin - pharmacology Levamisole - pharmacology Male Nematode Infections - drug therapy Nematode Infections - parasitology Nematode Infections - veterinary Parasite Egg Count - veterinary Parasitic Sensitivity Tests - veterinary Sheep Sheep Diseases - drug therapy Sheep Diseases - parasitology Small ruminants Surveys and Questionnaires Switzerland Treatment Outcome |
| title | Avermectin-resistance in gastrointestinal nematodes of Boer goats and Dorper sheep in Switzerland |
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