Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina

Autores
Suarez, Victor Humberto; Martinez, Gabriela Marcela; Micheloud, Juan Francisco; Viñabal, Alberto
Año de publicación
2017
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
The aim of this work was to study the epidemiology and the harmful effect of gastrointestinal nematodes (GINs) on beef cattle in the piedmont forest and grassland region of northwestern Argentina, between March 2015 and March 2016. Sixty weaned female calves were divided into three groups: STG—calves treated systematically with 200 mcg/kg moxidectin every 40–50 days; LTG—calves treated as usually locally implemented, with 200 mcg/kg ivermectin on May 4 and August 5; and UTG—calves not receiving treatment. Moreover, a group of 20 untreated first-calving cows was monitored. Eggs per gram of faeces (epg) and faeces cultures were performed. Live weight gain (LWG) was recorded. Differences among groups were compared using analysis of variance and Tukey test. At the start of the experiment, mean epg was from moderate to high (595 ± 480); therefore, this group was treated in May. Mean UTG epg peaked (907 ± 754) in mid-winter, decreasing toward spring. LTG epg only decreased partially after treatment, showing 54.2% of ivermectin efficacy. Epg values of STG were always negligible values (95.8% of moxidectin efficacy). The dominant nematode genus was Cooperia (81.9%), followed by Haemonchus (15.5%). The effect of treatments was evident from middle autumn, with STG showing a significantly (p < 0.002) higher LWG than the other groups. Toward the end of the trial, LWG of STG and LTG increased by 27.2 and 8.2%, respectively, to those of UTG. This preliminary study showed a winter epg peak and a negative effect of GINs on LWG, even in moderately infected calves.
EEA Salta
Fil: Suarez, Victor Humberto . Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina
Fil: Martinez, Gabriela Marcela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina
Fil: Micheloud, Juan Francisco. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina
Fil: Viñabal, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina
Fuente
Tropical animal health and production : 1–6. (December 2017)
Materia
Epidemiologia
Nematoda
Ganado de Carne
Beef Cattle
Epidemiology
Gastrointestinal Diseases
Enfermedades Gastrointestinales
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/2039
Acceder
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spelling Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical ArgentinaSuarez, Victor HumbertoMartinez, Gabriela MarcelaMicheloud, Juan FranciscoViñabal, AlbertoEpidemiologiaNematodaGanado de CarneBeef CattleEpidemiologyGastrointestinal DiseasesEnfermedades GastrointestinalesThe aim of this work was to study the epidemiology and the harmful effect of gastrointestinal nematodes (GINs) on beef cattle in the piedmont forest and grassland region of northwestern Argentina, between March 2015 and March 2016. Sixty weaned female calves were divided into three groups: STG—calves treated systematically with 200 mcg/kg moxidectin every 40–50 days; LTG—calves treated as usually locally implemented, with 200 mcg/kg ivermectin on May 4 and August 5; and UTG—calves not receiving treatment. Moreover, a group of 20 untreated first-calving cows was monitored. Eggs per gram of faeces (epg) and faeces cultures were performed. Live weight gain (LWG) was recorded. Differences among groups were compared using analysis of variance and Tukey test. At the start of the experiment, mean epg was from moderate to high (595 ± 480); therefore, this group was treated in May. Mean UTG epg peaked (907 ± 754) in mid-winter, decreasing toward spring. LTG epg only decreased partially after treatment, showing 54.2% of ivermectin efficacy. Epg values of STG were always negligible values (95.8% of moxidectin efficacy). The dominant nematode genus was Cooperia (81.9%), followed by Haemonchus (15.5%). The effect of treatments was evident from middle autumn, with STG showing a significantly (p < 0.002) higher LWG than the other groups. Toward the end of the trial, LWG of STG and LTG increased by 27.2 and 8.2%, respectively, to those of UTG. This preliminary study showed a winter epg peak and a negative effect of GINs on LWG, even in moderately infected calves.EEA SaltaFil: Suarez, Victor Humberto . Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; ArgentinaFil: Martinez, Gabriela Marcela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; ArgentinaFil: Micheloud, Juan Francisco. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; ArgentinaFil: Viñabal, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina2018-03-15T16:59:46Z2018-03-15T16:59:46Z2017-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/2039https://link.springer.com/article/10.1007/s11250-017-1498-y0049-4747 (Print)1573-7438 (Online)https://doi.org/10.1007/s11250-017-1498-yTropical animal health and production : 1–6. (December 2017)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología AgropecuariaspaArgentina (nation)info:eu-repo/semantics/restrictedAccess2025-10-23T11:16:28Zoai:localhost:20.500.12123/2039instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-23 11:16:29.064INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina
title Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina
spellingShingle Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina
Suarez, Victor Humberto
Epidemiologia
Nematoda
Ganado de Carne
Beef Cattle
Epidemiology
Gastrointestinal Diseases
Enfermedades Gastrointestinales
title_short Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina
title_full Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina
title_fullStr Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina
title_full_unstemmed Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina
title_sort Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina
dc.creator.none.fl_str_mv Suarez, Victor Humberto
Martinez, Gabriela Marcela
Micheloud, Juan Francisco
Viñabal, Alberto
author Suarez, Victor Humberto
author_facet Suarez, Victor Humberto
Martinez, Gabriela Marcela
Micheloud, Juan Francisco
Viñabal, Alberto
author_role author
author2 Martinez, Gabriela Marcela
Micheloud, Juan Francisco
Viñabal, Alberto
author2_role author
author
author
dc.subject.none.fl_str_mv Epidemiologia
Nematoda
Ganado de Carne
Beef Cattle
Epidemiology
Gastrointestinal Diseases
Enfermedades Gastrointestinales
topic Epidemiologia
Nematoda
Ganado de Carne
Beef Cattle
Epidemiology
Gastrointestinal Diseases
Enfermedades Gastrointestinales
dc.description.none.fl_txt_mv The aim of this work was to study the epidemiology and the harmful effect of gastrointestinal nematodes (GINs) on beef cattle in the piedmont forest and grassland region of northwestern Argentina, between March 2015 and March 2016. Sixty weaned female calves were divided into three groups: STG—calves treated systematically with 200 mcg/kg moxidectin every 40–50 days; LTG—calves treated as usually locally implemented, with 200 mcg/kg ivermectin on May 4 and August 5; and UTG—calves not receiving treatment. Moreover, a group of 20 untreated first-calving cows was monitored. Eggs per gram of faeces (epg) and faeces cultures were performed. Live weight gain (LWG) was recorded. Differences among groups were compared using analysis of variance and Tukey test. At the start of the experiment, mean epg was from moderate to high (595 ± 480); therefore, this group was treated in May. Mean UTG epg peaked (907 ± 754) in mid-winter, decreasing toward spring. LTG epg only decreased partially after treatment, showing 54.2% of ivermectin efficacy. Epg values of STG were always negligible values (95.8% of moxidectin efficacy). The dominant nematode genus was Cooperia (81.9%), followed by Haemonchus (15.5%). The effect of treatments was evident from middle autumn, with STG showing a significantly (p < 0.002) higher LWG than the other groups. Toward the end of the trial, LWG of STG and LTG increased by 27.2 and 8.2%, respectively, to those of UTG. This preliminary study showed a winter epg peak and a negative effect of GINs on LWG, even in moderately infected calves.
EEA Salta
Fil: Suarez, Victor Humberto . Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina
Fil: Martinez, Gabriela Marcela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina
Fil: Micheloud, Juan Francisco. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina
Fil: Viñabal, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina
description The aim of this work was to study the epidemiology and the harmful effect of gastrointestinal nematodes (GINs) on beef cattle in the piedmont forest and grassland region of northwestern Argentina, between March 2015 and March 2016. Sixty weaned female calves were divided into three groups: STG—calves treated systematically with 200 mcg/kg moxidectin every 40–50 days; LTG—calves treated as usually locally implemented, with 200 mcg/kg ivermectin on May 4 and August 5; and UTG—calves not receiving treatment. Moreover, a group of 20 untreated first-calving cows was monitored. Eggs per gram of faeces (epg) and faeces cultures were performed. Live weight gain (LWG) was recorded. Differences among groups were compared using analysis of variance and Tukey test. At the start of the experiment, mean epg was from moderate to high (595 ± 480); therefore, this group was treated in May. Mean UTG epg peaked (907 ± 754) in mid-winter, decreasing toward spring. LTG epg only decreased partially after treatment, showing 54.2% of ivermectin efficacy. Epg values of STG were always negligible values (95.8% of moxidectin efficacy). The dominant nematode genus was Cooperia (81.9%), followed by Haemonchus (15.5%). The effect of treatments was evident from middle autumn, with STG showing a significantly (p < 0.002) higher LWG than the other groups. Toward the end of the trial, LWG of STG and LTG increased by 27.2 and 8.2%, respectively, to those of UTG. This preliminary study showed a winter epg peak and a negative effect of GINs on LWG, even in moderately infected calves.
publishDate 2017
dc.date.none.fl_str_mv 2017-12
2018-03-15T16:59:46Z
2018-03-15T16:59:46Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/2039
https://link.springer.com/article/10.1007/s11250-017-1498-y
0049-4747 (Print)
1573-7438 (Online)
https://doi.org/10.1007/s11250-017-1498-y
url http://hdl.handle.net/20.500.12123/2039
https://link.springer.com/article/10.1007/s11250-017-1498-y
https://doi.org/10.1007/s11250-017-1498-y
identifier_str_mv 0049-4747 (Print)
1573-7438 (Online)
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Argentina (nation)
dc.source.none.fl_str_mv Tropical animal health and production : 1–6. (December 2017)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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