A questionnaire survey was conducted to determine the control practices against gastro-intestinal helminths in goat herds from different areas of Lombardy including prealpine and flat areas. Drenching was the only solution adopted by farmers to control goat parasites. Out of 104, 75.73% of farms used an annual anthelmintic treatment and in only 5.1% of farms goats were treated twice per year. Further, the treatments were not administered regularly each year. Benzimidazoles and pro-benzimidazoles were the most commonly used anthelmintics (87.65%). Other anthelmintics which were used but at relatively minor extent included eprinomectin and ivermectin (2.47%). Treatments were made between the end of October and mid January, depending on the climatic area where the farm is located, the farm management and the goat physiological stage. Detection of anthelminthic resitance was carried out on 1228 goats from different farms (n=33); goats were treated by a veterinarian and eight anthelmintics were tested (albendazole, fenbendazole, oxfendazole, netobimin, febantel, moxidectin, eprinomectin and ivermectin). Faecal samples were collected before and after drenching depending on product and the FECR test was performed on epg values obtained by McMaster method. Percentage reduction of parasite eggs was calculated by using the formulae recommended by the World Association for the Advancement of Veterinary Parasitology guidelines for detecting anthelminthic resistance in nematodes of ruminants (Coles et al 1992) and by Cabaret e Berrag (2004). Then, has been calculated the average from both the percentage reduction values. In 29 out of 33 farms, benzimidazoles and probenzimidazoles resulted effective against gastrointestinal nematodes (iFECR2 or FECRT formula “Coles” > 90%); in three farms a resistance could be suspected (iFECR2 or FECRT formula “Coles” < 90% and >67%) and in a single farm the mean FECRT value was equal to 68.9% (moderate resistance). Macrocyclic lactones were found effective in all farms (iFECR2 or FECRT formula “Coles” > 90%) except one (iFECR2=74%).

Control practices and anthelmintic resistance against gastro-intestinal helminths in goat herds in Lombardy (northern Italy) / G. Giuliani, S.A.G. Zanzani, M. Villa, F. Bencetti, G. Zanatta, G. Bruni, M.T. Manfredi. ((Intervento presentato al 4. convegno CAPARA WGs Workshop & MC Meeting tenutosi a Gran Canaria nel 2012.

Control practices and anthelmintic resistance against gastro-intestinal helminths in goat herds in Lombardy (northern Italy)

S.A.G. Zanzani;M.T. Manfredi
Ultimo
2012

Abstract

A questionnaire survey was conducted to determine the control practices against gastro-intestinal helminths in goat herds from different areas of Lombardy including prealpine and flat areas. Drenching was the only solution adopted by farmers to control goat parasites. Out of 104, 75.73% of farms used an annual anthelmintic treatment and in only 5.1% of farms goats were treated twice per year. Further, the treatments were not administered regularly each year. Benzimidazoles and pro-benzimidazoles were the most commonly used anthelmintics (87.65%). Other anthelmintics which were used but at relatively minor extent included eprinomectin and ivermectin (2.47%). Treatments were made between the end of October and mid January, depending on the climatic area where the farm is located, the farm management and the goat physiological stage. Detection of anthelminthic resitance was carried out on 1228 goats from different farms (n=33); goats were treated by a veterinarian and eight anthelmintics were tested (albendazole, fenbendazole, oxfendazole, netobimin, febantel, moxidectin, eprinomectin and ivermectin). Faecal samples were collected before and after drenching depending on product and the FECR test was performed on epg values obtained by McMaster method. Percentage reduction of parasite eggs was calculated by using the formulae recommended by the World Association for the Advancement of Veterinary Parasitology guidelines for detecting anthelminthic resistance in nematodes of ruminants (Coles et al 1992) and by Cabaret e Berrag (2004). Then, has been calculated the average from both the percentage reduction values. In 29 out of 33 farms, benzimidazoles and probenzimidazoles resulted effective against gastrointestinal nematodes (iFECR2 or FECRT formula “Coles” > 90%); in three farms a resistance could be suspected (iFECR2 or FECRT formula “Coles” < 90% and >67%) and in a single farm the mean FECRT value was equal to 68.9% (moderate resistance). Macrocyclic lactones were found effective in all farms (iFECR2 or FECRT formula “Coles” > 90%) except one (iFECR2=74%).
set-2012
Settore VET/06 - Parassitologia e Malattie Parassitarie degli Animali
COST Action FA0805
COST
European Cooperation in Science and Technology
https://www.yumpu.com/en/document/view/8706078/4th-capara-wgs-workshop-mc-meeting-fulp/55
Control practices and anthelmintic resistance against gastro-intestinal helminths in goat herds in Lombardy (northern Italy) / G. Giuliani, S.A.G. Zanzani, M. Villa, F. Bencetti, G. Zanatta, G. Bruni, M.T. Manfredi. ((Intervento presentato al 4. convegno CAPARA WGs Workshop & MC Meeting tenutosi a Gran Canaria nel 2012.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/236473
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