Resumo

LEAL LABRADA, Alfredo Alejandro et al. Relationship between the Number of Diseases and the Herd´s Productive Stage. Rev. prod. anim. [online]. 2018, vol.30, n.1, pp. 53-57. ISSN 2224-7920.

In 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.

Palavras-chave : status; dairy cattle; reproduction; Probit regression.

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