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Anthelmintic action of eprinomectin in lactating Anglo-Nubian goats in Brazil

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Abstract

Eprinomectin is the only avermectin approved for use to control gastrointestinal nematodes in lactating cows. Some studies in the USA and Europe have also demonstrated that this drug is highly effective in small ruminants. The aim of the present work was to evaluate the anthelmintic efficacy of pour-on eprinomectin in Anglo-Nubian goats at the end of lactation. Twenty-four goats were used, naturally infected with gastrointestinal nematodes, and divided into two groups: control and treated with eprinomectin (Eprinex®, Merial, pour-on 0.5%) at a dose of 850 μg/kg. Counts were made of the eggs per gram (EPG) of feces, along with coprocultures, on days −7, 0, 4, 8, 11, 15, 18, 22, 25 and 29. The milk production of each group was recorded throughout the experiment. The coprocultures detected 98% Haemonchus contortus and 2% Oesophagostomum. There was no statistically significant difference (P > 0.05) in daily milk output between the two groups. Eprinomectin at the tested dosage was not effective (P > 0.05) in reducing the EPG. Positive results would serve as basis for use of an avermectin without residues in dairy goats, providing a scientific basis for greater food safety.

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Authors and Affiliations

  1. Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234-Caixa Postal 339, 13560-970, São Carlos, SP, Brazil

    Ana Carolina de Souza Chagas

  2. Embrapa Caprinos, Fazenda Três Lagoas, Estrada Sobral-Groaíras, Km 4, 62011-970, Sobral, CE, Brazil

    Luiz da Silva Vieira & Luciana Cristine Vasques Villela

  3. Universidade Estadual Vale do Acaraú, Avenida da Universidade, 850, Betânia, 62030-500, Sobral, Ceará, Brazil

    Wladimir Rodrigues Aragão & Andrine Maria do Carmo Navarro

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  1. Ana Carolina de Souza Chagas
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  2. Luiz da Silva Vieira
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  3. Wladimir Rodrigues Aragão
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  4. Andrine Maria do Carmo Navarro
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  5. Luciana Cristine Vasques Villela
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Correspondence to Ana Carolina de Souza Chagas.

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de Souza Chagas, A.C., da Silva Vieira, L., Rodrigues Aragão, W. et al. Anthelmintic action of eprinomectin in lactating Anglo-Nubian goats in Brazil. Parasitol Res 100, 391–394 (2007). https://doi.org/10.1007/s00436-006-0316-7

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  • DOI: https://doi.org/10.1007/s00436-006-0316-7

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