Antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of Cundinamarca and Boyaca (Colombia)
A study was conducted in 36 farms of the Bogotá Savannah, Ubaté and Chiquinquirá Valleys and Tequendama Region (Cundinamarca), to determine via in vivo egg reduction count test (ERCT) antihelmintics resistance to bovine gastrointestinal nematodes. Resistance was determined in. 40 calves, three to 12 months of age, allotted to four groups of ten animals each one: 1) control (untreated); 2) albendazol 25% (5 mg/kg); 3) ivermectin 1% (0.2 mg/kg) and 4) levamisol 18.8% (1 mg/kg). By feces cultivation techniques, six genera were identified, Cooperia spp. being the predominant one. Resistance was determined when the ERCT was below 95% and the lowest 95% confidence interval limit was 90. Resistance was found in 25% of the farms: albendazol and ivermectin resistance was detected in 17% and 8% of the farms, respectively. Cooperia spp. was involved in both compounds. Average egg per gram (epg) of feces reduction after treatments with ivermectin, albendazol and levamisol, was 97.89% ± 6% (66% - 100%); 95.9% ± 9.3% (51% - 100%) and 99.4% ± 0.92% (97.6 - 100%), respectively. Resistance to levamisol was not detected. Risk factors associated with resistance were: worming of adult cattle, wrong dosage regarding body weight and use of the same active ingredient for more than four years.
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Corporación Colombiana de Investigación Agropecuaria (Agrosavia)
2008
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dig-bac-20.500.12324-350872020-07-08T21:26:43Z Antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of Cundinamarca and Boyaca (Colombia) Resistencia a los antihelmínticos en nematodos gastrointestinales de bovinos en municipios de Cundinamarca y Boyacá Márquez, Dildo Jiménez, Gabriel García, Fredy Garzón, Clara A study was conducted in 36 farms of the Bogotá Savannah, Ubaté and Chiquinquirá Valleys and Tequendama Region (Cundinamarca), to determine via in vivo egg reduction count test (ERCT) antihelmintics resistance to bovine gastrointestinal nematodes. Resistance was determined in. 40 calves, three to 12 months of age, allotted to four groups of ten animals each one: 1) control (untreated); 2) albendazol 25% (5 mg/kg); 3) ivermectin 1% (0.2 mg/kg) and 4) levamisol 18.8% (1 mg/kg). By feces cultivation techniques, six genera were identified, Cooperia spp. being the predominant one. Resistance was determined when the ERCT was below 95% and the lowest 95% confidence interval limit was 90. Resistance was found in 25% of the farms: albendazol and ivermectin resistance was detected in 17% and 8% of the farms, respectively. Cooperia spp. was involved in both compounds. Average egg per gram (epg) of feces reduction after treatments with ivermectin, albendazol and levamisol, was 97.89% ± 6% (66% - 100%); 95.9% ± 9.3% (51% - 100%) and 99.4% ± 0.92% (97.6 - 100%), respectively. Resistance to levamisol was not detected. Risk factors associated with resistance were: worming of adult cattle, wrong dosage regarding body weight and use of the same active ingredient for more than four years. En 36 fincas lecheras de la Sabana de Bogotá, los Valles de Ubaté y Chiquinquirá y la Región del Tequendama (Cundinamarca, Colombia) se determinó la resistencia a los antihelmínticos en nematodos gastrointestinales de bovinos mediante la prueba in vivo de la reducción del conteo de huevos (RCH). En cada finca se seleccionaron 40 bovinos de tres a 12 meses de edad, los cuales se distribuyeron en cuatro grupos de 10 animales: 1) control (no tratado), 2) albendazol 25% (dosis: 5 mg/kg peso vivo), 3) ivermectina 1% (0,2 mg/kg) y 4) levamisol 18,8% (1 mg/kg). En cada grupo se identificaron mediante coprocultivos seis géneros de parásitos siendo Cooperia spp. el predominante. La resistencia se declaró cuando el porcentaje de RCH fue menor de 95% y el límite inferior del intervalo de confianza (95%), menor a 90. El 25% de las fincas presentó resistencia: en 17% se detectó resistencia al albendazol y en 8% a la ivermectina; para estos dos antihelmínticos, Cooperia spp. fue el nematodo gastrointestinal involucrado. El promedio de reducción de huevos por gramo de heces (hpg), luego de los tratamientos con ivermectina, albendazol y levamisol, fue de 97,89% ± 6% (66% - 100%), 95,9% ± 9,3% (51% - 100%) y 99,4% ± 0,92% (97,6% - 100%), respectivamente. No se detectó resistencia al levamisol. Los factores de riesgo asociados con la resistencia fueron: vermifugación de bovinos adultos, dosificación no acorde con el peso de los animales y uso de un mismo principio activo por un tiempo mayor de cuatro años. 2019-08-09T19:29:54Z 2019-08-09T19:29:54Z 2008 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://revistacta.agrosavia.co/index.php/revista/article/view/111 10.21930/rcta.vol9_num1_art:111 http://hdl.handle.net/20.500.12324/35087 reponame:Biblioteca Digital Agropecuaria de Colombia repourl:https://repository.agrosavia.co instname:Corporación colombiana de investigación agropecuaria AGROSAVIA spa http://revistacta.agrosavia.co/index.php/revista/article/view/111/112 application/pdf Corporación Colombiana de Investigación Agropecuaria (Agrosavia) Ciencia y Tecnología Agropecuaria; Vol 9 No 1 (2008); 113-123 Ciencia y Tecnología Agropecuaria; Vol. 9 Núm. 1 (2008); 113-123 revista Corpoica Ciência e Tecnologia Agropecuária; v. 9 n. 1 (2008); 113-123 2500-5308 0122-8706 10.21930/rcta.vol9-num1 |
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A study was conducted in 36 farms of the Bogotá Savannah, Ubaté and Chiquinquirá Valleys and Tequendama Region (Cundinamarca), to determine via in vivo egg reduction count test (ERCT) antihelmintics resistance to bovine gastrointestinal nematodes. Resistance was determined in. 40 calves, three to 12 months of age, allotted to four groups of ten animals each one: 1) control (untreated); 2) albendazol 25% (5 mg/kg); 3) ivermectin 1% (0.2 mg/kg) and 4) levamisol 18.8% (1 mg/kg). By feces cultivation techniques, six genera were identified, Cooperia spp. being the predominant one. Resistance was determined when the ERCT was below 95% and the lowest 95% confidence interval limit was 90. Resistance was found in 25% of the farms: albendazol and ivermectin resistance was detected in 17% and 8% of the farms, respectively. Cooperia spp. was involved in both compounds. Average egg per gram (epg) of feces reduction after treatments with ivermectin, albendazol and levamisol, was 97.89% ± 6% (66% - 100%); 95.9% ± 9.3% (51% - 100%) and 99.4% ± 0.92% (97.6 - 100%), respectively. Resistance to levamisol was not detected. Risk factors associated with resistance were: worming of adult cattle, wrong dosage regarding body weight and use of the same active ingredient for more than four years. |
| format |
info:eu-repo/semantics/article |
| author |
Márquez, Dildo Jiménez, Gabriel García, Fredy Garzón, Clara |
| spellingShingle |
Márquez, Dildo Jiménez, Gabriel García, Fredy Garzón, Clara Antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of Cundinamarca and Boyaca (Colombia) |
| author_facet |
Márquez, Dildo Jiménez, Gabriel García, Fredy Garzón, Clara |
| author_sort |
Márquez, Dildo |
| title |
Antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of Cundinamarca and Boyaca (Colombia) |
| title_short |
Antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of Cundinamarca and Boyaca (Colombia) |
| title_full |
Antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of Cundinamarca and Boyaca (Colombia) |
| title_fullStr |
Antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of Cundinamarca and Boyaca (Colombia) |
| title_full_unstemmed |
Antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of Cundinamarca and Boyaca (Colombia) |
| title_sort |
antihelmintic resistance in gastrointestinal bovine nematodes in municipalities of cundinamarca and boyaca (colombia) |
| publisher |
Corporación Colombiana de Investigación Agropecuaria (Agrosavia) |
| publishDate |
2008 |
| url |
http://revistacta.agrosavia.co/index.php/revista/article/view/111 http://hdl.handle.net/20.500.12324/35087 |
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