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VetMed Resource

Veterinary information to support practice, based on evidence and continuing education

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Abstract

First cases of resistance of Cooperia pectinata and C. oncophora to avermectins were detected in Argentina in 2001. Spread of resistance to anthelmintics in various parts of the pampas region is outlined. Differences in anthelmintics resistance in helminth parasites of cattle and sheep are...

Author(s)
Humberto Suárez, V.; Cristel, S. L.
Publisher
Estación Experimental Regional Agropecuaria Anguil (INTA) (EEA), Secretaría de Agricultura, Ganadería y Pesca, Anguil, Argentina
Citation
Boletín de Divulgación Técnica, INTA, 2005, No.88, pp 98-101
Abstract

Six studies involving 330 cattle were conducted in Argentina, Brazil and Colombia to compare the efficacy of injectable endectocides in cattle grazing naturally infested pastures. Cattle were ranked either by weight or faecal egg count into single sex blocks and within blocks were randomly...

Author(s)
Entrocasso, C.; Parra, D.; Vottero, D.; Farias, M.; Uribe, L. F.; Ryan, W. G.
Citation
Veterinary Record, 1996, 138, 4, pp 91-92
Abstract

Calves naturally infected with gastro-intestinal nematodes were treated with ivermectin (22, 23-dihydroavermectin B1) given either orally at 100 mu g/kg body-weight or subcutaneously at 50, 100 or 200 mu g/kg. Worm counts at autopsy 14 to 16 days later showed that all 4 treatments had removed more...

Author(s)
Armour, J.; Bairden, K.; Preston, J. M.
Citation
Veterinary Record, 1980, 107, 10, pp 226-227