Confirmation of resistance to ivermectin by Cooperia curticei in sheep

References

• Ahluwalia , JS and Charleston , WAG . 1975 . Studies on the pathogenicity of Cooperia curticei for sheep . New Zealand Veterinary Journal , 23 : 197 – 199 .
   PubMedGoogle Scholar
• Benz , GW , Roncalli , RA and Gross , SJ . 1989 . “ Use of ivermectin in cattle, sheep, goats and swine ” . In Ivermectin and Abamectin , Edited by: Campbell , WC . 215 – 219 . New York, , USA : Springer-Verlag .
   Google Scholar
• Bogan , JA , McKellar , QA , Mitchell , ES and Scott , EW . 1988 . Efficacy of ivermectin against Cooperia curticei infection in sheep . American Journal of Veterinary Research , 49 : 99 – 100 .
   PubMed Web of Science ®Google Scholar
• Brunsdon , RV . 1964 . The incidence of gastro-intestinal nematodes in cattle in New Zealand . New Zealand Veterinary Journal , 12 : 135 – 139 .
   PubMedGoogle Scholar
• Conder , GA and Campbell , WC . 1995 . Chemotherapy of nematode infections of veterinary importance with special reference to drug resistance . Advances in Parasitology , 35 : 1 – 84 .
   PubMed Web of Science ®Google Scholar
• Egerton , JR , Birnbaum , J , Blair , LS , Chabala , JC , Conroy , J , Fisher , MH , Mrozik , H , Ostlind , DA , Wilkins , CA and Campbell , WC . 1980 . 22, 23-Dihydroavermectin B1, a new broad-spectrum antiparasitic agent . British Veterinary Journal , 136 : 88 – 97 .
   PubMedGoogle Scholar
• Familton , AS . 2001 . Cooperia in cattle in New Zealand . Proceedings of the 31st Seminar of the Society of Sheep and Beef Cattle Veterinarians of the New Zealand Veterinary Association , : 99 – 109 .
   Google Scholar
• Familton , AS , Mason , P and Coles , GC . 2001 . Anthelmintic-resistant Cooperia species in cattle . Veterinary Record , 149 : 719 – 720 .
   PubMedGoogle Scholar
• Gopal , RM , Pomroy , WE and West , DM . 1999 . Resistance of field isolates of Trichostrongylus colubriformis and Ostertagia circumcincta to ivermectin . International Journal for Parasitology , 29 : 781 – 786 .
   PubMed Web of Science ®Google Scholar
• Hughes , PL , McKenna , PB and Murphy , A . 2004 . Resistance to moxidectin and abamectin in naturally acquired Ostertagia circumcincta infections in sheep . New Zealand Veterinary Journal , 52 : 202 – 204 .
   PubMed Web of Science ®Google Scholar
• Hughes , PL , Dowling , AF and McKenna , PB . 2005 a . Macrocyclic lactone resistance in sheep nematodes in the Taihape region . Proceedings of the 35th Seminar of the Society of Sheep and Beef Cattle Veterinarians of the New Zealand Veterinary Association. , : 147 – 153 .
   Google Scholar
• Hughes , PL , McKenna , PB and Dowling , AF . 2005 b . A survey of the prevalence of emerging macrocyclic lactone resistance and of benzimidazole resistance in sheep nematodes in the lower North Island of New Zealand . New Zealand Veterinary Journal , 53 : 87 – 90 .
   PubMed Web of Science ®Google Scholar
• Leathwick , DM , Moen , IC , Miller , CM and Sutherland , IA . 2000 . Ivermectin-resistant Ostertagia circumcincta from sheep in the lower North Island and their susceptibility to other macrocyclic lactone anthelmintics . New Zealand Veterinary Journal , 48 : 151 – 154 .
   PubMed Web of Science ®Google Scholar
• McKenna , PB . 1996 . Anthelmintic resistance in cattle nematodes in New Zealand: Is it increasing? . New Zealand Veterinary Journal , 44 : 76 – 76 .
   PubMed Web of Science ®Google Scholar
• McKenna , PB . 1998 . What do anthelmintic efficacy figures really signify? . New Zealand Veterinary Journal , 46 : 82 – 83 .
   PubMed Web of Science ®Google Scholar
• McKenna , PB and Watson , TG . 1987 . The comparative efficacy of four broad spectrum anthelmintics against some experimentally induced trichostrongylid infections in sheep and goats . New Zealand Veterinary Journal , 35 : 192 – 195 .
   PubMed Web of Science ®Google Scholar
• Sangster , NC and Gill , J . 1999 . Pharmacology of anthelmintic resistance . Parasitology Today , 15 : 141 – 146 .
   PubMedGoogle Scholar
• Satrija , F and Nansen , P . 1992 . Experimental infections with Cooperia oncophora in calves. . Acta Veterinaria Scandinavica , 33 : 229 – 336 .
   PubMedGoogle Scholar
• Shoop , WL . 1993 . Ivermectin resistance . Parasitology Today , 9 : 154 – 159 .
   PubMedGoogle Scholar
• Shoop , WL , Haines , H , Michael , B and Eary , CH . 1993 . Mutual resistance to avermectins and milbemycins: oral activity of ivermectin and moxidectin against ivermectin-resistant and susceptible nematodes . Veterinary Record , 133 : 445 – 447 .
   PubMed Web of Science ®Google Scholar
• Vermunt , JJ , West , DM and Pomroy , WE . 1995 . Multiple resistance to ivermectin and oxfendazole in Cooperia species of cattle in New Zealand . Veterinary Record , 137 : 43 – 45 .
   PubMed Web of Science ®Google Scholar
• Vermunt , JJ , West , DM and Pomroy , WE . 1996 . Inefficacy of moxidectin and doramectin against ivermectin-resistant Cooperia spp. of cattle in New Zealand . New Zealand Veterinary Journal , 44 : 188 – 193 .
   PubMed Web of Science ®Google Scholar
• Vickers , M , Venning , M , McKenna , PB and Mariadass , B . 2001 . Resistance to macrocyclic lactone anthelmintics by Haemonchus contortus and Ostertagia circumcincta in sheep in New Zealand . New Zealand Veterinary Journal , 49 : 101 – 105 .
   PubMed Web of Science ®Google Scholar