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Year 2018 - Volume 38, Number 5
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Characterization of gender, breed and age in a population of 7,780 dogs submitted for necropsy over five decades (1964-2013) in central Rio Grande do Sul, Brazil, 38(5):973-980
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ABSTRACT.- Flores M.M., Mazaro R.D., Poeta A.P.S., Kommers G.D. & Fighera R.A. 2018. [Characterization of gender, breed and age in a population of 7,780 dogs submitted for necropsy over five decades (1964-2013) in central Rio Grande do Sul, Brazil.] Caracterização do gênero, da raça e da idade de uma população de 7.780 cães da Região Central do Rio Grande do Sul submetidos à necropsia ao longo de cinco décadas (1964‑2013). Pesquisa Veterinária Brasileira 38(5):973-980. Departamento de Patologia, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS 97105-900, Brazil. E-mail: anemiaveterinaria@yahoo.com.br
Based on the lack of demographic database on the canine population living in the midland region of Rio Grande do Sul State, Brazil, and on the need for a “control population” in the accomplishment of several prevalence-based studies of different diseases diagnosed at the Laboratório de Patologia Veterinária (LPV) of the Universidade Federal de Santa Maria (UFSM), the objective of this study was to describe the breed, gender and age characteristics of the population of dogs necropsied in this diagnostic service over 50 years (1964-2013). The protocols of necropsies performed on dogs and recorded in the LPV-UFSM between 1964 and 2013 were reviewed, and information related to gender, age and breed from dogs from all the districts within the Central Region of RS were separated. A total of 7,780 dogs were necropsied, among which 469 (6%) were registered in the first decade (1964‑1973), 1,133 (14.6%) in the second decade (1974-1983), 1,334 (17.1%) in the third decade (1984‑1993), 1,705 (22%) in the fourth decade (1994-2003) and 3,139 (40.3%) in the fifth decade (2004‑2013). Of dogs whose gender was reported in the protocols, 52.6% were males and 47.4% were females. The median age of death was 3 years. Of dogs whose breed was reported in the protocols, 59.8% were purebred and 40.2% were mixed breed. The most common large and giant breed dogs were German Shepherd Dog (17.2%), Boxer (6.9%), Rottweiler (5.3%), Fila Brasileiro (4.6%), English Pointer (3.9%), Collie Rough (3.7%), Dobermann (3.7%), and Labrador Retriever (2.1%). The most common small and medium breed dogs were Poodle (8.9%), Dachshund (6.3%), Miniature Pinscher (5.6%), English Cocker Spaniel (4.5%), Pekingese (3.4%), Yorkshire Terrier (3.3%), and Brazilian Terrier (2.8%). The percentage of females and the median age of death showed an increase during the five decades of this study. Although there has been a significant increase in the proportion of pure breed dogs compared to mongrels, we observed some changes in the occurrence of different breeds over time, including a significant decrease in the frequency of the Pekingese, Brazilian Terrier, English Pointer, and German Shepherd Dog, and significant increase in the frequency of the Poodle, Dachshund, and Labrador Retriever. The results presented here will serve as an allowance for future comparative studies of disease prevalence in dogs of Central Region of RS, helping to a more correct understanding and interpretation of results from these data surveys. |
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