Factors associated with Neospora caninum serostatus in cattle of 20 specialised Costa Rican dairy herds
Twenty-five specialised Costa Rican dairy farms (located in the Poás area) were used to determine neosporosis seroprevalence and the association of seropositivity with environmental and management factors. The farms involved were selected intentionally and all of them use VAMPP 5.1 (Veterinary Autom...
| Autores Principales: | ROMERO-ZUÑIGA, JUAN JOSÉ, Pérez, E., Dolz, Gaby, Frankena, K. |
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| Formato: | Artículo |
| Idioma: | Inglés |
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Elsevier B.V
2022
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http://hdl.handle.net/11056/22997 https://doi.org/10.1016/S0167-5877(01)00290-2 |
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RepoUNACR22997 |
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RepoUNACR229972022-05-06T22:27:44Z Factors associated with Neospora caninum serostatus in cattle of 20 specialised Costa Rican dairy herds ROMERO-ZUÑIGA, JUAN JOSÉ Pérez, E. Dolz, Gaby Frankena, K. COSTA RICA GANADO DE LECHE MILK CATTLE ABORTO EN ANIMALES VIRUS VIRUSES Twenty-five specialised Costa Rican dairy farms (located in the Poás area) were used to determine neosporosis seroprevalence and the association of seropositivity with environmental and management factors. The farms involved were selected intentionally and all of them use VAMPP 5.1 (Veterinary Automated Management and Production Control Programme) as management-information system. Holstein–Friesian, Jersey and crosses between them were the most-frequent breeds in these herds. The number of females per farm varied from 41 to 296. Our cross-sectional study had two phases. In the first phase, we determined the presence or absence of seropositivity at herd level. For the second phase, all females in 20 seropositive farms were bled. Serum samples were tested for antibodies to Neospora caninum using an indirect enzyme-linked immunosorbent assay (ELISA). A questionnaire with factors mentioned in the literature was administered to the farmers. Logistic regression (LR with herd as random effect) was used to assess the relationships of the serostatus at the individual level with characteristics of the cows and environmental factors. In the first phase all herds had >20% seropositive females; therefore, all herds were eligible for the second phase. In the second phase, the overall prevalence was 39.7% (1191/3002), and within-herd prevalences were between 25.0 and 70.5%. Age 3–6 years, parity ≤2 of the dam of the cow, Jersey breed and lack of purposive sampling to diagnose abortive infectious disease were associated with positive serostatus; other management and environmental factors did not show significant associations. The lack of association between management and environmental factors with serostatus might be because all farms were exposed to a considerable number of potential factors. That all herds of this study were seropositive for neosporosis and the within-herd prevalence was considerable raises questions about how far the infection is spread in other dairy areas of Costa Rica. Para determinar la seroprevalencia de la neosporosis y la asociación de la seropositividad con factores ambientales y de manejo se utilizaron 25 explotaciones lecheras especializadas de Costa Rica (ubicadas en la zona de Poás). Las explotaciones implicadas fueron seleccionadas intencionadamente y todas ellas utilizan el VAMPP 5.1 (Programa Automatizado de Gestión y Control de la Producción Veterinaria) como sistema de información de gestión. Las razas más frecuentes en estos rebaños fueron la Holstein-Friesian, la Jersey y los cruces entre ellas. El número de hembras por explotación variaba entre 41 y 296. Nuestro estudio transversal tuvo dos fases. En la primera fase, se determinó la presencia o ausencia de seropositividad en el rebaño. En la segunda fase, se sangraron todas las hembras de 20 explotaciones seropositivas. Las muestras de suero se analizaron para detectar anticuerpos contra Neospora caninum mediante un ensayo inmunoenzimático indirecto (ELISA). Se administró a los ganaderos un cuestionario con los factores mencionados en la literatura. Se utilizó la regresión logística (LR con el rebaño como efecto aleatorio) para evaluar las relaciones del estado serológico a nivel individual con las características de las vacas y los factores ambientales. En la primera fase, todos los rebaños tenían >20% de hembras seropositivas; por lo tanto, todos los rebaños eran elegibles para la segunda fase. En la segunda fase, la prevalencia global fue del 39,7% (1191/3002), y las prevalencias dentro del rebaño se situaron entre el 25,0 y el 70,5%. La edad de 3 a 6 años, la paridad ≤2 de la madre de la vaca, la raza Jersey y la falta de muestreo intencionado para diagnosticar la enfermedad infecciosa abortiva se asociaron con el estado serológico positivo; otros factores de gestión y ambientales no mostraron asociaciones significativas. La falta de asociación entre los factores de gestión y ambientales con el seroestatus podría deberse a que todas las explotaciones estaban expuestas a un número considerable de factores potenciales. El hecho de que todos los rebaños de este estudio fueran seropositivos a la neosporosis y de que la prevalencia dentro del rebaño fuera considerable plantea interrogantes sobre la extensión de la infección en otras zonas lecheras de Costa Rica. Universidad Nacional, Costa Rica Escuela de Medicina Veterinaria 2022-05-06T22:26:02Z 2022-05-06T22:26:02Z 2002-04-15 http://purl.org/coar/resource_type/c_6501 http://hdl.handle.net/11056/22997 https://doi.org/10.1016/S0167-5877(01)00290-2 eng Acceso embargado Atribución-NoComercial-CompartirIgual 4.0 Internacional http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Elsevier B.V Preventive Veterinary Medicine Vol. 53, No. 4 : 263-273, 2002 |
| institution |
Universidad Nacional de Costa Rica |
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Repositorio UNA-Costa Rica |
| language |
Inglés |
| topic |
COSTA RICA GANADO DE LECHE MILK CATTLE ABORTO EN ANIMALES VIRUS VIRUSES |
| spellingShingle |
COSTA RICA GANADO DE LECHE MILK CATTLE ABORTO EN ANIMALES VIRUS VIRUSES ROMERO-ZUÑIGA, JUAN JOSÉ Pérez, E. Dolz, Gaby Frankena, K. Factors associated with Neospora caninum serostatus in cattle of 20 specialised Costa Rican dairy herds |
| description |
Twenty-five specialised Costa Rican dairy farms (located in the Poás area) were used to determine neosporosis seroprevalence and the association of seropositivity with environmental and management factors. The farms involved were selected intentionally and all of them use VAMPP 5.1 (Veterinary Automated Management and Production Control Programme) as management-information system. Holstein–Friesian, Jersey and crosses between them were the most-frequent breeds in these herds. The number of females per farm varied from 41 to 296. Our cross-sectional study had two phases. In the first phase, we determined the presence or absence of seropositivity at herd level. For the second phase, all females in 20 seropositive farms were bled. Serum samples were tested for antibodies to Neospora caninum using an indirect enzyme-linked immunosorbent assay (ELISA). A questionnaire with factors mentioned in the literature was administered to the farmers. Logistic regression (LR with herd as random effect) was used to assess the relationships of the serostatus at the individual level with characteristics of the cows and environmental factors. In the first phase all herds had >20% seropositive females; therefore, all herds were eligible for the second phase. In the second phase, the overall prevalence was 39.7% (1191/3002), and within-herd prevalences were between 25.0 and 70.5%. Age 3–6 years, parity ≤2 of the dam of the cow, Jersey breed and lack of purposive sampling to diagnose abortive infectious disease were associated with positive serostatus; other management and environmental factors did not show significant associations. The lack of association between management and environmental factors with serostatus might be because all farms were exposed to a considerable number of potential factors. That all herds of this study were seropositive for neosporosis and the within-herd prevalence was considerable raises questions about how far the infection is spread in other dairy areas of Costa Rica. |
| format |
Artículo |
| author |
ROMERO-ZUÑIGA, JUAN JOSÉ Pérez, E. Dolz, Gaby Frankena, K. |
| author_sort |
ROMERO-ZUÑIGA, JUAN JOSÉ |
| title |
Factors associated with Neospora caninum serostatus in cattle of 20 specialised Costa Rican dairy herds |
| title_short |
Factors associated with Neospora caninum serostatus in cattle of 20 specialised Costa Rican dairy herds |
| title_full |
Factors associated with Neospora caninum serostatus in cattle of 20 specialised Costa Rican dairy herds |
| title_fullStr |
Factors associated with Neospora caninum serostatus in cattle of 20 specialised Costa Rican dairy herds |
| title_full_unstemmed |
Factors associated with Neospora caninum serostatus in cattle of 20 specialised Costa Rican dairy herds |
| title_sort |
factors associated with neospora caninum serostatus in cattle of 20 specialised costa rican dairy herds |
| publisher |
Elsevier B.V |
| publishDate |
2022 |
| url |
http://hdl.handle.net/11056/22997 https://doi.org/10.1016/S0167-5877(01)00290-2 |
| _version_ |
1796095262788157440 |
| score |
12.041087 |