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Causes of bird losses recorded in a captive-bred wild bird flock between 2011 and 2015

This study discusses the causes of bird deaths recorded in a small aviary dedicated to the breeding of a few exotic, wild bird species. Findings from 28 birds were examined over a period of five years. About 40% of the deaths occurred in the first two weeks after hatching in the two most numerous sp...

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Bibliographic Details
Published in:Ciência rural 2017, Vol.47 (5)
Main Authors: Oliveira, Luiz Gustavo Schneider de, Lipinski, Gustavo Pistelli, Lorenzett, Marina Paula, Rolim, Verônica Machado, Marques, Sandra Márcia Tietz, Driemeier, David, Cruz, Cláudio Estêvão Farias
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Language:English
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Summary:This study discusses the causes of bird deaths recorded in a small aviary dedicated to the breeding of a few exotic, wild bird species. Findings from 28 birds were examined over a period of five years. About 40% of the deaths occurred in the first two weeks after hatching in the two most numerous species in the flock and such losses were mainly a result of starvation caused by inadequate nutritional management. Additionally, 28% of the cases affected recently introduced birds. Despite frequent treatment with anthelmintics; a total of 21% of the deaths in the flock could be attributed to parasitic diseases, most of them in recently acquired birds. Only three of the deaths could be associated with advanced age, all of the further cases were also attributable to management fails. Our results indicated that propagation of these and other species requires an improvement of the management of the newly hatched and newcomer birds to considerably enhance the flock’s performance. Such information may be useful in conservation initiatives and may justify, at least in part, captivity of these animals. RESUMO: Este estudo discute as causas de morte de aves registradas em um pequeno criadouro de umas poucas espécies de aves silvestres exóticas. As mortes de 28 aves foram examinadas em um período de cinco anos. Cerca de 40% dos casos ocorreram na primeira semana de vida de filhotes das duas espécies mais numerosas no plantel e essas perdas foram consequentes à desnutrição por falhas no manejo nutricional. Outros 28% de casos ocorreram em aves, recentemente introduzidas, ou em fase de adaptação, no criadouro. Ainda que as aves do plantel sejam frequentemente dosificadas com anti-helmínticos, 21% das mortes no plantel foram secundárias a doenças parasitárias; a maioria afetou aves recentemente adquiridas. Exceto por três mortes que foram associadas com desordens atribuídas à idade avançada, todas as demais foram associadas com inadequações no manejo das aves. Esses resultados sugerem que, em sistemas dessa natureza, as aves recém-nascidas e as recém-introduzidas são categorias críticas que demandam concentração de esforços para o atendimento sistemático de suas necessidades. Tais dados podem ser aplicáveis em iniciativas de conservação de outras espécies e podem justificar, ainda que parcialmente, a manutenção desses animais, em cativeiro.
ISSN:0103-8478
1678-4596
0103-8478
1678-4596
DOI:10.1590/0103-8478cr20160903