Livestock species constitute a key component of agricultural biodiversity. In this thesis a contribute to the process of characterization and conservation of small ruminants genetic resources was given with the study of the population history, structure, genetic diversity and environmental adaptation of sheep and goats local breeds. In this context, were addressed five specific goals. Firstly, the development of an algorithm for the selection of ancestry informative markers for the identification of feral x domestic sheep hybrids, secondly the assessment of molecular diversity, history and relationship of the feral goat of Montecristo, as well as the investigation of the impact of different management practices on genomic inbreeding on Italian goat populations. The focus on environmental adaptation allowed to carefully review methods and approaches for detecting adaptation in ruminants and, consequently, to detect genes associated to environmental adaptation in European local sheep breeds.
Le specie zootecniche costituiscono un elemento chiave della biodiversità agraria. In questa tesi si è contribuito al processo di caratterizzazione e conservazione del patrimonio genetico dei piccoli ruminanti tramite lo studio della demografia e struttura di popolazione, della diversità molecolare e dell’adattamento ambientale di diverse razze ovi-caprine. In questo contesto sono stati perseguiti cinque differenti obiettivi. In primo luogo, è stato sviluppato un algoritmo per la selezione di marcatori genetici in grado di identificare i soggetti ibridi originati dall’incrocio di pecora per muflone. Successivamente è stata analizzata da un punto di vista genetico la popolazione di capre ferali dell’isola di Montecristo e nonché l’impatto di diverse pratiche di gestione sul livello di inbreeding delle popolazioni caprine Italiane. Il focus sull’adattamento dei ruminanti a differenti ambienti climatici ha portato a un’approfondita revisione di metodologie ed approcci nonché all’identificazione di geni associati all’adattamento ambientale razze ovine locali Europee.
SOMENZI, ELISA, INVESTIGATION ON SMALL RUMINANTS BIODIVERSITY AND ADAPTATION, AJMONE MARSAN, PAOLO, Università Cattolica del Sacro Cuore Piacenza:Ciclo XXXIV [https://hdl.handle.net/10807/285918]
INVESTIGATION ON SMALL RUMINANTS BIODIVERSITY AND ADAPTATION
Somenzi, Elisa
2022
Abstract
Livestock species constitute a key component of agricultural biodiversity. In this thesis a contribute to the process of characterization and conservation of small ruminants genetic resources was given with the study of the population history, structure, genetic diversity and environmental adaptation of sheep and goats local breeds. In this context, were addressed five specific goals. Firstly, the development of an algorithm for the selection of ancestry informative markers for the identification of feral x domestic sheep hybrids, secondly the assessment of molecular diversity, history and relationship of the feral goat of Montecristo, as well as the investigation of the impact of different management practices on genomic inbreeding on Italian goat populations. The focus on environmental adaptation allowed to carefully review methods and approaches for detecting adaptation in ruminants and, consequently, to detect genes associated to environmental adaptation in European local sheep breeds.File | Dimensione | Formato | |
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