Controlling endemic Neospora caninum-related abortions in a dairy herd from Argentina
After diagnosis of endemic abortions due to neosporosis in a commercial dairy farm, routes of Neospora caninum-transmission were evaluated in order to choose the best strategy for reducing its seroprevalence and related abortions. Fifty two dam-calf pairs were bled at parturition. Additionally, 22 f...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
| Published: |
Frontiers Media, Switzerland
2020
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/6716 https://www.frontiersin.org/articles/10.3389/fvets.2019.00446/full https://doi.org/10.3389/fvets.2019.00446 |
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| author | Lagomarsino, Horacio Scioli, Agustín Rodriguez, Alejandro Martin Armendano, Joaquín Ignacio Fiorani, Franco Bence, Ángel García, Joaquín Hecker, Yanina Gual, Ignacio Canton, German Jose Odeon, Anselmo Carlos Campero, Carlos Manuel Moore, Prando Dadin |
| author_browse | Armendano, Joaquín Ignacio Bence, Ángel Campero, Carlos Manuel Canton, German Jose Fiorani, Franco García, Joaquín Gual, Ignacio Hecker, Yanina Lagomarsino, Horacio Moore, Prando Dadin Odeon, Anselmo Carlos Rodriguez, Alejandro Martin Scioli, Agustín |
| author_facet | Lagomarsino, Horacio Scioli, Agustín Rodriguez, Alejandro Martin Armendano, Joaquín Ignacio Fiorani, Franco Bence, Ángel García, Joaquín Hecker, Yanina Gual, Ignacio Canton, German Jose Odeon, Anselmo Carlos Campero, Carlos Manuel Moore, Prando Dadin |
| author_sort | Lagomarsino, Horacio |
| collection | INTA Digital |
| description | After diagnosis of endemic abortions due to neosporosis in a commercial dairy farm, routes of Neospora caninum-transmission were evaluated in order to choose the best strategy for reducing its seroprevalence and related abortions. Fifty two dam-calf pairs were bled at parturition. Additionally, 22 female calves were also sampled at regular 3 month intervals until 18–22 months. N. caninum specific antibodies were assayed by IFAT. Serum samples were tested at a dilution 1:25 for calves before colostrum intake and heifers before mating and 1:100 for multiparous cows. Only serum samples from IFAT seropositive cattle involved in the evaluation of the routes of transmission were assessed by a commercial IgG avidity ELISA. Seropositive cows or heifers were artificially inseminated with semen from Hereford bulls. The progenies from these female animals were sent to a feed lot to produce meat. Different generalized linear models (GLM) were used to study the relationship between abortion, age category, and serostatus. Seropositive heifers were more likely to have a record of abortion (OR 2.7; 95% CI 1.6–4.7). Vertical transmission frequency was 55.5% (5 seropositive calves/9 seropositive cows). Horizontal transmission was 22.7% (5 female calves seroconverted at least one time/22 females calves sampled during 24 months) and these 5 female calves had low avidity. In heifers, both seroprevalence and abortion rates decreased from 22.1 and 8.4% of 475 in 2009 to 6.1 and 4.3% of 578 in 2015, respectively (p < 0.01). Over 5 years, N. caninum-seroprevalence and the related abortions in heifers decreased after the control strategy was assessed. |
| format | info:ar-repo/semantics/artículo |
| id | INTA6716 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Frontiers Media, Switzerland |
| publisherStr | Frontiers Media, Switzerland |
| record_format | dspace |
| spelling | INTA67162020-02-11T12:03:08Z Controlling endemic Neospora caninum-related abortions in a dairy herd from Argentina Lagomarsino, Horacio Scioli, Agustín Rodriguez, Alejandro Martin Armendano, Joaquín Ignacio Fiorani, Franco Bence, Ángel García, Joaquín Hecker, Yanina Gual, Ignacio Canton, German Jose Odeon, Anselmo Carlos Campero, Carlos Manuel Moore, Prando Dadin Aborto Neospora Caninum Control de Enfermedades Vacas Lecheras Argentina Abortion Diaseases Control Dairy Cows Neosporosis After diagnosis of endemic abortions due to neosporosis in a commercial dairy farm, routes of Neospora caninum-transmission were evaluated in order to choose the best strategy for reducing its seroprevalence and related abortions. Fifty two dam-calf pairs were bled at parturition. Additionally, 22 female calves were also sampled at regular 3 month intervals until 18–22 months. N. caninum specific antibodies were assayed by IFAT. Serum samples were tested at a dilution 1:25 for calves before colostrum intake and heifers before mating and 1:100 for multiparous cows. Only serum samples from IFAT seropositive cattle involved in the evaluation of the routes of transmission were assessed by a commercial IgG avidity ELISA. Seropositive cows or heifers were artificially inseminated with semen from Hereford bulls. The progenies from these female animals were sent to a feed lot to produce meat. Different generalized linear models (GLM) were used to study the relationship between abortion, age category, and serostatus. Seropositive heifers were more likely to have a record of abortion (OR 2.7; 95% CI 1.6–4.7). Vertical transmission frequency was 55.5% (5 seropositive calves/9 seropositive cows). Horizontal transmission was 22.7% (5 female calves seroconverted at least one time/22 females calves sampled during 24 months) and these 5 female calves had low avidity. In heifers, both seroprevalence and abortion rates decreased from 22.1 and 8.4% of 475 in 2009 to 6.1 and 4.3% of 578 in 2015, respectively (p < 0.01). Over 5 years, N. caninum-seroprevalence and the related abortions in heifers decreased after the control strategy was assessed. EEA Balcarce Fil: Lagomarsino, Horacio. Actividad privada; Argentina Fil: Scioli, Agustín. Actividad privada; Argentina Fil: Rodríguez, Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Armendano, Joaquín. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Fiorani, Franco. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Bence, Ángel. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina. Fil: García, Joaquín. Actividad privada; Argentina Fil: Hecker, Yanina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Gual, Ignacio. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Cantón, Germán. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Odeón, Anselmo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce, Argentina Fil: Campero, Carlos. Actividad privada; Argentina Fil: Moore, Dadín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. 2020-02-11T11:46:05Z 2020-02-11T11:46:05Z 2019-12-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/6716 https://www.frontiersin.org/articles/10.3389/fvets.2019.00446/full 22971769 https://doi.org/10.3389/fvets.2019.00446 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Frontiers Media, Switzerland Frontiers in Veterinary Science 6: 446 (December 2019) |
| spellingShingle | Aborto Neospora Caninum Control de Enfermedades Vacas Lecheras Argentina Abortion Diaseases Control Dairy Cows Neosporosis Lagomarsino, Horacio Scioli, Agustín Rodriguez, Alejandro Martin Armendano, Joaquín Ignacio Fiorani, Franco Bence, Ángel García, Joaquín Hecker, Yanina Gual, Ignacio Canton, German Jose Odeon, Anselmo Carlos Campero, Carlos Manuel Moore, Prando Dadin Controlling endemic Neospora caninum-related abortions in a dairy herd from Argentina |
| title | Controlling endemic Neospora caninum-related abortions in a dairy herd from Argentina |
| title_full | Controlling endemic Neospora caninum-related abortions in a dairy herd from Argentina |
| title_fullStr | Controlling endemic Neospora caninum-related abortions in a dairy herd from Argentina |
| title_full_unstemmed | Controlling endemic Neospora caninum-related abortions in a dairy herd from Argentina |
| title_short | Controlling endemic Neospora caninum-related abortions in a dairy herd from Argentina |
| title_sort | controlling endemic neospora caninum related abortions in a dairy herd from argentina |
| topic | Aborto Neospora Caninum Control de Enfermedades Vacas Lecheras Argentina Abortion Diaseases Control Dairy Cows Neosporosis |
| url | http://hdl.handle.net/20.500.12123/6716 https://www.frontiersin.org/articles/10.3389/fvets.2019.00446/full https://doi.org/10.3389/fvets.2019.00446 |
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