Association of Disease Outbreak and Reproduction in Cattle Herds

In order to determine the effects of infectious and parasitic diseases during the reproductive stage of artificially inseminated dairy cattle herds in the municipality of Camagüey, province of Camagüey, Cuba, the monthly data of death causes and number of cases (2010-2014) were collected at the company Triángulo 3. Significant correlations were found between the categories of the reproductive stage and the number of cases, seen as stimulus intensity (none = 0; one case = 1; about 2-4 cases = 2; five or more cases = 3). Probit regression revealed that the higher the stimulus the fewer cows awaiting diagnostic, and the greater the number of empty cows. Hence, these cases had a negative impact on the dairy herd´s reproductive behavior. This study recommends Probit regression as a tool for analysis of health issues associated with variables that define the reproductive status of the herd

Asociación entre el número de focos de enfermedades y el estado reproductivo del rebaño

Para determinar los efectos de los focos de enfermedades infecciosas y parasitarias en el estado reproductivo de rebaños lecheros en inseminación artificial del municipio Camagüey fueron obtenidos los datos mensuales referentes a las causas de muertes y cantidad de focos en la empresa Triángulo 3 del municipio y provincia de Camagüey correspondientes al periodo 2010-2014. Fueron obtenidas correlaciones significativas entre las categorías del estado reproductivo y el número de focos categorizado como intensidad de estímulo (ninguno= 0, un foco = 1, entre dos y cuatro focos = 2, cinco y más=3), la regresión Probit demostró que a medida en que aumentó el estímulo disminuyeron las hembras pendientes al diagnóstico y aumentó el número de vacías por lo que los focos ejercieron un impacto negativo en el estado reproductivo de rebaños lecheros. Se recomienda utilizar la regresión Probit como herramienta en los análisis de asociaciones de aspectos de salud con las variables que definen el estado reproductivo del rebaño.AbstractIn order to determine the effects of infectious and parasitic diseases during the reproductive stage of artificially inseminated dairy herds in the municipality of Camaguey, province of Camaguey, Cuba, monthly data of death causes and number of cases (2010-2014) were collected at the Triángulo 3 Company, in the municipality and province. Significant correlations were found between the categories of the reproductive stage and the number of cases, seen as stimulus intensity (none = 0; one case = 1; about 2-4 cases = 2; five or more cases = 3). Probit regression revealed that the greater the stimulus, the fewer cows awaiting diagnostic, and the greater the number of empty cows. Hence, the cases had a negative impact on the herd´s reproductive behavior. This study recommends Probit regression as a tool for association analysis of health, using the variables that define the reproductive state of the herd