TAILIEUCHUNG - Báo cáo sinh học: " Demographic characterization, inbreeding and maintenance of genetic diversity in the endangered "

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Demographic characterization, inbreeding and maintenance of genetic diversity in the endangered | 195 Genet. Sei. Evol. 30 1998 195-201 Inra Elsevier Paris Note Demographic characterization inbreeding and maintenance of genetic diversity in the endangered Catalonian donkey breed Pilar Folch Jordi Jordana Unitat de Genètica i Millora Animal Departament de Patologia i Producció Animals Facultat de Veterinària Universitat Autònoma de Barcelona 08193-Bellaterra Barcelona Spain Received 20 November 1997 accepted 1 March 1998 Abstract This study characterizes the demographic and genealogical structure of a limited-size population in danger of extinction the Catalonian donkey breed. The purpose of this paper is to establish the most suitable breeding criteria and guidelines to achieve the Programme of Conservation and Maintenance of Animal Genetic Resources in this population. The two main objectives proposed are 1 to maintain the maximum genetic diversity with 2 the minimum possible consanguinity increase per generation. A population size of 109 animals of both sexes 44 males and 65 females was analysed. The pedigree information was used to calculate the following items generation length L variances of family size 2 effective population size Ae inbreeding coefficient F and probability of gene origin. The results obtained and breeding criteria to be followed are discussed. The correct mating policy between a stallion and a jenny would be that which would maximize the so-called genetic conservation index and minimize the inbreeding coefficient of the hypothetical offspring of the couple. Inra Elsevier Paris donkey endangered breed pedigree analysis I demographic structure genetic diversity maintenance Resume Caractérisation démographique consanguinité et entretien de la varia-bilỉté génétique de la race asine Catalane. Le present travail caractérise la structure démographique et généalogique d une population en voie d extinction la race asine Catalane. La finalite de ce travail a été d etablir les critères et normes de reproduction les plus appropriés pour développer .

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