Age structure of owned dogs under compulsory culling in a visceral leishmaniasis endemic area

Abstract: The age structure of the dog population is essential for planning and evaluating control programs for zoonotic diseases. We analyzed data of an owned-dog census in order to characterize, for the first time, the structure of a dog population under compulsory culling in a visceral leishmania...

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Main Authors: Danielly Vieira Bortoletto (Author), Yuri Tani Utsunomiya (Author), Silvia Helena Venturoli Perri (Author), Fernando Ferreira (Author), Cáris Maroni Nunes (Author)
Format: Book
Published: Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz, 2016-01-01T00:00:00Z.
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Summary:Abstract: The age structure of the dog population is essential for planning and evaluating control programs for zoonotic diseases. We analyzed data of an owned-dog census in order to characterize, for the first time, the structure of a dog population under compulsory culling in a visceral leishmaniasis endemic area (Panorama, São Paulo State, Brazil) that recorded a dog-culling rate of 28% in the year of the study. Data on 1,329 households and 1,671 owned dogs revealed an owned dog:human ratio of 1:7. The mean age of dogs was estimated at 1.73 years; the age pyramid indicated high birth and mortality rates at the first year of age with an estimated cumulative mortality of 78% at the third year of age and expected life span of 2.75 years. In spite of the high mortality, a growth projection simulation suggested that the population has potential to grow in a logarithmic scale over the years. The estimated parameters can be further applied in models to maximize the impact and minimize financial inputs of visceral leishmaniasis control measures.
Item Description:1678-4464
10.1590/0102-311X00026115