Detalhes bibliográficos
| Ano de defesa: |
2009 |
| Autor(a) principal: |
BARROS, Eulalia Alves |
| Orientador(a): |
RIBEIRO, Maria Norma |
| Banca de defesa: |
MASCIOLI, Arthur dos Santos,
PIMENTA FILHO, Edgard Cavalcanti,
BRASIL, Lúcia Helena de Albuquerque |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Zootecnia
|
| Departamento: |
Departamento de Zootecnia
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
|
| Link de acesso: |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6745
|
Resumo: |
Marota breed goats is part of the Brazilian genetic patrimony, consisting by animals highly adapted to semi-arid region. This study evaluated genetic structure of Marota breed from Embrapa Meio Norte nucleus for conservation. Pedigree records of 663 animals, which were born from 1995 to 2003, were used for population parameters estimation. Inbreeding coefficient ( F ) and average relationship coefficient (AR) of the population was 0.11% and 0.84% respectively. Generation interval (IEG) was 5.28 years and average effective size ( e N ) per generation was 222 animals; the effective number of founder animals ( e f ) and ancestral ( a f ) was the sam (48). Among 214 ancestors evaluated, just 22 of them were responsible for 50% of the population genetic variability,which indicate loss of original genes. This study shows low contribution of the founder animals among the generations. Wright inbreeding coefficient indicates population subdivision in lineages. Inbreeding and average relationship coefficients (AR) were low. |
