Reproductive losses associated with bacterial and protozoan infections in cattle herds from Corrientes province
The aim of the present study was to determine the association between serological status and the causes of abortion related to bacterial and protozoan infections in three livestock farms with low reproductive performance in Corrientes province, Argentina. During 2020-2021, preputial scraping of bull...
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| Autores principales: | , , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Universidad Nacional del Nordeste
2026
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| Acceso en línea: | https://revistas.unne.edu.ar/index.php/vet/article/view/9047 |
| Aporte de: |
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I48-R154-article-9047 |
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ojs |
| institution |
Universidad Nacional del Nordeste |
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I-48 |
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R-154 |
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) |
| language |
Español |
| format |
Artículo revista |
| topic |
abortion reproductive losses cattle cervicovaginal mucus aborto pérdidas reproductivas bovino mucus cervicovaginal |
| spellingShingle |
abortion reproductive losses cattle cervicovaginal mucus aborto pérdidas reproductivas bovino mucus cervicovaginal Della Rosa, Paola Sala, Juan Manuel Morel, V. Benítez, Daniel Francisco Caspe, Sergio Gastón Reproductive losses associated with bacterial and protozoan infections in cattle herds from Corrientes province |
| topic_facet |
abortion reproductive losses cattle cervicovaginal mucus aborto pérdidas reproductivas bovino mucus cervicovaginal |
| author |
Della Rosa, Paola Sala, Juan Manuel Morel, V. Benítez, Daniel Francisco Caspe, Sergio Gastón |
| author_facet |
Della Rosa, Paola Sala, Juan Manuel Morel, V. Benítez, Daniel Francisco Caspe, Sergio Gastón |
| author_sort |
Della Rosa, Paola |
| title |
Reproductive losses associated with bacterial and protozoan infections in cattle herds from Corrientes province |
| title_short |
Reproductive losses associated with bacterial and protozoan infections in cattle herds from Corrientes province |
| title_full |
Reproductive losses associated with bacterial and protozoan infections in cattle herds from Corrientes province |
| title_fullStr |
Reproductive losses associated with bacterial and protozoan infections in cattle herds from Corrientes province |
| title_full_unstemmed |
Reproductive losses associated with bacterial and protozoan infections in cattle herds from Corrientes province |
| title_sort |
reproductive losses associated with bacterial and protozoan infections in cattle herds from corrientes province |
| description |
The aim of the present study was to determine the association between serological status and the causes of abortion related to bacterial and protozoan infections in three livestock farms with low reproductive performance in Corrientes province, Argentina. During 2020-2021, preputial scraping of bulls, pregnancy diagnosis by transrectal ultrasound in cows, and collection of aborted fetuses were performed. Blood samples from pregnant, non-pregnant and aborted cows were analyzed for Leptospira spp., Neospora caninum and Brucella abortus antibodies. In addition, cervicovaginal mucus (CVM) samples were collected from aborted cows for culture. Five percent of the bulls were positive for Tritrichomonas foetus and 7% for Campylobacter fetus (locality 1). Among 546 sera analysed, 1.8% (10/546; 95% CI 1-3) were positive for Leptospira spp., showing a significant association between high seroprevalence and non-pregnant females (p = 0.0174). For N. caninum, the seroprevalence was 49.1% (268/546 95% CI 45-54), showing a statistically significant association between seropositivity and pregnant females (p = 0.0151). Of 14 aborted females monitored, 42.8% became seropositive to N. caninum, suggesting horizontal transmission, a finding of notable importance. All animals were seronegative for B. abortus. Furthermore, T. foetus (3/61) and C. fetus (3/61) were isolated from 9.8% (6/61) of CVM samples, and infectious agents were identified as the cause of abortion in 42.9% (3/7) of the fetuses. This study provides insight into infectious causes of reproductive losses in extensive cattle herds in the Argentine Mesopotamia, highlighting the importance of venereal disease in bulls and the need for sampling of aborted cows and fetuses to identify causes of reproductive failure. |
| publisher |
Universidad Nacional del Nordeste |
| publishDate |
2026 |
| url |
https://revistas.unne.edu.ar/index.php/vet/article/view/9047 |
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I48-R154-article-90472026-01-02T16:21:28Z Reproductive losses associated with bacterial and protozoan infections in cattle herds from Corrientes province Pérdidas reproductivas asociadas a infecciones bacterianas y protozoarias en rodeos bovinos de la provincia de Corrientes Della Rosa, Paola Sala, Juan Manuel Morel, V. Benítez, Daniel Francisco Caspe, Sergio Gastón abortion reproductive losses cattle cervicovaginal mucus aborto pérdidas reproductivas bovino mucus cervicovaginal The aim of the present study was to determine the association between serological status and the causes of abortion related to bacterial and protozoan infections in three livestock farms with low reproductive performance in Corrientes province, Argentina. During 2020-2021, preputial scraping of bulls, pregnancy diagnosis by transrectal ultrasound in cows, and collection of aborted fetuses were performed. Blood samples from pregnant, non-pregnant and aborted cows were analyzed for Leptospira spp., Neospora caninum and Brucella abortus antibodies. In addition, cervicovaginal mucus (CVM) samples were collected from aborted cows for culture. Five percent of the bulls were positive for Tritrichomonas foetus and 7% for Campylobacter fetus (locality 1). Among 546 sera analysed, 1.8% (10/546; 95% CI 1-3) were positive for Leptospira spp., showing a significant association between high seroprevalence and non-pregnant females (p = 0.0174). For N. caninum, the seroprevalence was 49.1% (268/546 95% CI 45-54), showing a statistically significant association between seropositivity and pregnant females (p = 0.0151). Of 14 aborted females monitored, 42.8% became seropositive to N. caninum, suggesting horizontal transmission, a finding of notable importance. All animals were seronegative for B. abortus. Furthermore, T. foetus (3/61) and C. fetus (3/61) were isolated from 9.8% (6/61) of CVM samples, and infectious agents were identified as the cause of abortion in 42.9% (3/7) of the fetuses. This study provides insight into infectious causes of reproductive losses in extensive cattle herds in the Argentine Mesopotamia, highlighting the importance of venereal disease in bulls and the need for sampling of aborted cows and fetuses to identify causes of reproductive failure. El objetivo del presente estudio fue determinar la asociación entre el estado serológico y las causas de abortos relacionadas a infecciones bacterianas y protozoarias en tres establecimientos ganaderos con bajo desempeño reproductivo en la provincia de Corrientes, Argentina. Durante 2020-2021, se realizó raspado prepucial de toros, diagnóstico de gestación por ecografía transrectal en vacas y recolección de fetos. Se tomaron muestras de sangre de vacas gestantes, no gestantes y abortadas para el diagnóstico serológico de Leptospira spp., Neospora caninum y Brucella abortus. Además, se tomó una muestra de moco cervicovaginal (CVM) para cultivo en vacas abortadas. En el 5% de los toros fueron positivos para Tritrichomonas foetus y en el 7% para Campylobacter fetus (localidad 1). En el 1,8% (10/546; IC95% 1-3) de 546 sueros analizados fueron positivos para Leptospira spp., observándose una asociación positiva entre la alta seroprevalencia y las hembras no gestantes (p = 0,0174). Además, para N. caninum, la seroprevalencia fue del 49,1% (268/546 IC95% 45-54), mostrando una asociación estadísticamente significativa entre la serología positiva a N. caninum y las hembras preñadas (p = 0,0151). De 14 hembras abortadas en el seguimiento, el 42,8% se volvió seropositiva a N. caninum, lo que podría indicar una infección por transmisión horizontal, siendo este hallazgo de gran importancia. Todos los animales fueron seronegativos para B. abortus. Además, T. foetus (3/61) y C. fetus (3/61) se aislaron en el 9,8% (6/61) del CVM. Solo en el 42,9% (3/7) de los fetos, como agentes infecciosos se identificaron como causa del aborto. El presente estudio muestra información sobre la causa infecciosa de pérdidas reproductivas en rebaños extensivos de la Mesopotamia argentina, confirmando además la importancia de la enfermedad venérea en toros y el muestreo de vacas y fetos abortados para identificar la causa de la pérdida. Universidad Nacional del Nordeste 2026-01-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/9047 10.30972/vet.3719047 Revista Veterinaria; Vol. 37 (2026); 1-6 Revista Veterinaria; Vol. 37 (2026); 1-6 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/9047/8690 Derechos de autor 2026 Paola Della Rosa, Juan Manuel Sala, V. Morel, Daniel Francisco Benítez, Sergio Gastón Caspe https://creativecommons.org/licenses/by-nc/4.0 |