Abstract For breeding schemes based on a diversity of production systems, there is a growing challenge in combining standardised tools for the collective genetic improvement of a breed and the selection of a flock able to respond to the specific constraints of the farm and the farmer’s objectives. In order to progress on this question, it is necessary to gain better knowledge of how farmers who use one or several of these tools select the future breeding animals of their flocks, and the conditions under which they use these collective tools. We took the example of dairy sheep farming in Corsica (France) and of two collective tools for the Corsican breed’s management: the use of milk recording data within and outside of the breeding scheme and the buying of rams from the breeding scheme’s cooperative. The tools’ use and perception were described by means of interviews with farmers (n = 40). Cross-analysis of farms’ descriptors and the use of collective tools was performed by statistical analysis using available databases on dairy sheep flocks in Corsica. A diversity of breeding practices was associated to the use of milk recording data and to the purchase of rams sold by the breeding scheme’s cooperative. Flock size, milking method and type of land use influenced these breeding practices and the adoption or mistrust of a collective genetic improvement tool. Dissemination of genetic progress through rams from the breeding scheme is possible, provided that a diversity of breeding practices and production environments is represented in the nucleus flocks. Highlights Participating in the breeding scheme of the Corsican breed did not hinder the use of various replacement and culling practices in dairy sheep farms Modalities of use of the milk recording tool are multiple and driven by work organisation, perception of the breeding scheme and the farm project Rams sold by the breeding scheme’s cooperative are present in several commercial farms with varying characteristics

中文翻译：

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育种实践的多样性与使用集体工具对科西嘉绵羊品种进行遗传管理有关

摘要 对于基于多种生产系统的育种计划，将标准化工具结合起来进行品种集体遗传改良和选择能够满足农场特定限制和农民目标的鸡群面临越来越大的挑战。为了在这个问题上取得进展，有必要更好地了解使用这些工具中的一种或几种的农民如何选择他们羊群的未来繁殖动物，以及他们使用这些集体工具的条件。我们以科西嘉（法国）的奶羊养殖和科西嘉品种管理的两种集体工具为例：在育种计划内外使用牛奶记录数据以及从育种计划合作社购买公羊。通过与农民（n = 40）的访谈来描述工具的使用和感知。使用科西嘉奶羊群的可用数据库，通过统计分析对农场的描述词和集体工具的使用进行交叉分析。育种实践的多样性与牛奶记录数据的使用和育种计划合作社出售的公羊的购买有关。鸡群大小、挤奶方法和土地利用类型影响了这些育种实践以及集体遗传改良工具的采用或不信任。可以通过育种计划中的公羊传播遗传进展，前提是核心群中体现了育种实践和生产环境的多样性。