Bortoletto Danielly Vieira, Utsunomiya Yuri Tani, Perri Silvia Helena Venturoli, Ferreira Fernando, Nunes Cáris Maroni
Faculdade de Medicina Veterinária, Universidade Estadual Paulista, Araçatuba, Brasil.
Faculdade de Ciência Agrária e Veterinárias, Universidade Estadual Paulista, Jaboticabal, Brasil.
Cad Saude Publica. 2016 Sep 5;32(8):e00026115. doi: 10.1590/0102-311X00026115.
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.
犬类种群的年龄结构对于人畜共患病控制项目的规划和评估至关重要。我们分析了一项家养犬普查的数据，以便首次描述内脏利什曼病流行地区（巴西圣保罗州帕诺拉马）在强制扑杀情况下犬类种群的结构，该地区在研究当年的犬类扑杀率为28%。关于1329户家庭和1671只家养犬的数据显示，家养犬与人的比例为1:7。犬的平均年龄估计为1.73岁；年龄金字塔表明，一岁时出生率和死亡率较高，估计三岁时累计死亡率为78%，预期寿命为2.75岁。尽管死亡率很高，但增长预测模拟表明，多年来该种群有以对数规模增长的潜力。估计的参数可进一步应用于模型，以最大限度地提高内脏利什曼病控制措施的影响并减少财政投入。
