Frequency of Neospora caninum in double purpose cattle on herds at the State of Guárico, Venezuela
It was carried out an investigation to determine the frequency of Neospora caninum in double purpose cattle. Blood samples (n= 890) were collected in four age groups: 0-6 mo, 6-12 mo, 12-24 mo and >24 mo. The presence of antibodies was determined by an indirect ELISA kit, and the results were classified as positive and negative. The seroprevalence was 21 % in cattle, and 76.6 % in the herds evaluated. Regarding to the age group, no statistical association was found (P>0.05); however, the risk of being seropositive increased with age, indicating the high probability of horizontal transmission of N. caninum in the herd. There was no statistical association with respect to sex (P>0.05). Regarding reproductive status, a statistical association (P<0.05) was found with respect to abortion. Although all the groups were positive, cows with a history of abortion showed higher seroconversion, indicating that the risk of abortion increased with increasing levels of antibodies against the parasite. From the total positive farms (76.6 %), higher seroconversion (100 %) were observed in those with the highest number of dogs (>7 dogs), and this result indicates that a higher number of dogs, a higher prevalence of N. Caninum, since dogs are the main source of horizontal transmission. It is concluded that there is antigenic circulation of N. caninum associated to abortions in double purpose cattle of the State of Guarico, and that could be controlled improving the sanitary conditions of the herds.
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Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias
2018
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Pinilla León, Juan Carlos Da Silva Borges, Natalia |
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Pinilla León, Juan Carlos Da Silva Borges, Natalia Frequency of Neospora caninum in double purpose cattle on herds at the State of Guárico, Venezuela |
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Pinilla León, Juan Carlos Da Silva Borges, Natalia |
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Pinilla León, Juan Carlos |
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Frequency of Neospora caninum in double purpose cattle on herds at the State of Guárico, Venezuela |
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Frequency of Neospora caninum in double purpose cattle on herds at the State of Guárico, Venezuela |
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Frequency of Neospora caninum in double purpose cattle on herds at the State of Guárico, Venezuela |
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Frequency of Neospora caninum in double purpose cattle on herds at the State of Guárico, Venezuela |
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Frequency of Neospora caninum in double purpose cattle on herds at the State of Guárico, Venezuela |
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frequency of neospora caninum in double purpose cattle on herds at the state of guárico, venezuela |
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It was carried out an investigation to determine the frequency of Neospora caninum in double purpose cattle. Blood samples (n= 890) were collected in four age groups: 0-6 mo, 6-12 mo, 12-24 mo and >24 mo. The presence of antibodies was determined by an indirect ELISA kit, and the results were classified as positive and negative. The seroprevalence was 21 % in cattle, and 76.6 % in the herds evaluated. Regarding to the age group, no statistical association was found (P>0.05); however, the risk of being seropositive increased with age, indicating the high probability of horizontal transmission of N. caninum in the herd. There was no statistical association with respect to sex (P>0.05). Regarding reproductive status, a statistical association (P<0.05) was found with respect to abortion. Although all the groups were positive, cows with a history of abortion showed higher seroconversion, indicating that the risk of abortion increased with increasing levels of antibodies against the parasite. From the total positive farms (76.6 %), higher seroconversion (100 %) were observed in those with the highest number of dogs (>7 dogs), and this result indicates that a higher number of dogs, a higher prevalence of N. Caninum, since dogs are the main source of horizontal transmission. It is concluded that there is antigenic circulation of N. caninum associated to abortions in double purpose cattle of the State of Guarico, and that could be controlled improving the sanitary conditions of the herds. |
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Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias |
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2018 |
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https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/4546 |
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AT pinillaleonjuancarlos frequencyofneosporacaninumindoublepurposecattleonherdsatthestateofguaricovenezuela AT dasilvaborgesnatalia frequencyofneosporacaninumindoublepurposecattleonherdsatthestateofguaricovenezuela AT pinillaleonjuancarlos frecuenciadeneosporacaninumenbovinosdoblepropositoenfincasdelestadoguaricovenezuela AT dasilvaborgesnatalia frecuenciadeneosporacaninumenbovinosdoblepropositoenfincasdelestadoguaricovenezuela |
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rev-remexcp-article45462018-12-22T00:23:12Z Frequency of Neospora caninum in double purpose cattle on herds at the State of Guárico, Venezuela Frecuencia de Neospora caninum en bovinos doble propósito en fincas del estado Guárico, Venezuela Pinilla León, Juan Carlos Da Silva Borges, Natalia Cattle; Explotations; Parasites; Prevalence; Protozoans. Explotaciones; Ganado vacuno; Parásitos; Prevalencia; Protozoarios. It was carried out an investigation to determine the frequency of Neospora caninum in double purpose cattle. Blood samples (n= 890) were collected in four age groups: 0-6 mo, 6-12 mo, 12-24 mo and >24 mo. The presence of antibodies was determined by an indirect ELISA kit, and the results were classified as positive and negative. The seroprevalence was 21 % in cattle, and 76.6 % in the herds evaluated. Regarding to the age group, no statistical association was found (P>0.05); however, the risk of being seropositive increased with age, indicating the high probability of horizontal transmission of N. caninum in the herd. There was no statistical association with respect to sex (P>0.05). Regarding reproductive status, a statistical association (P<0.05) was found with respect to abortion. Although all the groups were positive, cows with a history of abortion showed higher seroconversion, indicating that the risk of abortion increased with increasing levels of antibodies against the parasite. From the total positive farms (76.6 %), higher seroconversion (100 %) were observed in those with the highest number of dogs (>7 dogs), and this result indicates that a higher number of dogs, a higher prevalence of N. Caninum, since dogs are the main source of horizontal transmission. It is concluded that there is antigenic circulation of N. caninum associated to abortions in double purpose cattle of the State of Guarico, and that could be controlled improving the sanitary conditions of the herds. Se condujo una investigación con el propósito de determinar la frecuencia de Neospora caninum en bovinos de doble propósito. Se colectaron 890 muestras de sangre distribuidas en cuatro grupos etarios: 0–6 meses, 6–12 meses, 12–24 meses y >24 meses. La presencia de anticuerpos se determinó mediante un kit de ELISA indirecto, y los resultados se clasificaron en positivos y negativos. La seroprevalencia general fue de 21 % en bovinos, y 76.6 % en las fincas evaluadas. Al referir los resultados al grupo etario no se encontró asociación estadística (P>0.05); sin embargo, el riesgo de ser seropositivo incrementa con la edad, indicando la alta probabilidad de transmisión horizontal de N. caninum en el rebaño. Igualmente no hubo asociación estadística con respecto al sexo (P>0.05). Con relación al estatus reproductivo, se encontró asociación estadística (P<0.05) con respecto al aborto. Aunque todos los grupos resultaron positivos, las vacas con historia de aborto mostraron mayor seroconversión, lo que indica que el riesgo de aborto aumenta con niveles crecientes de anticuerpos contra el parásito. Del total de fincas positivas (76.6), se observó mayor seroconversión (100) en las que tenían mayor cantidad de perros (> 7 perros), y este resultado indica que a mayor cantidad de perros, mayor prevalencia de N. caninum, ya que los perros son la principal fuente de transmisión horizontal. Se concluye que existe circulación antigénica de N. caninum asociada a abortos en bovinos del estado Guarico, y que pudiera ser controlada mejorando las condiciones sanitarias de las explotaciones. Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias 2018-09-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf application/xml https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/4546 10.22319/rmcp.v9i4.4546 Revista Mexicana de Ciencias Pecuarias; Vol. 9, Núm. 4 (2018): Octubre-Diciembre; 833-844 Revista Mexicana de Ciencias Pecuarias; Vol. 9, Núm. 4 (2018): Octubre-Diciembre; 833-844 2448-6698 2007-1124 spa https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/4546/3951 https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/4546/4009 http://creativecommons.org/licenses/by-nc-sa/4.0 |