Perucho Lola, Hadjigeorgiou Ioannis, Lauvie Anne, Moulin Charles-Henri, Paoli Jean-Christophe, Ligda Christina
INRA, UR 0045 Laboratoire de Recherches sur le Développement de l'Elevage (LRDE), 20250, Corte, France.
Department of Nutrition Physiology and Feeding, Faculty of Animal Sciences and Aquaculture, Agricultural University of Athens, 75 Iera Odos, 118 55, Athens, Greece.
Trop Anim Health Prod. 2019 Feb;51(2):329-338. doi: 10.1007/s11250-018-1688-2. Epub 2018 Aug 24.
Local breeds are recognized as an important element for the maintenance of various and specific farming systems. Challenges for local breeds' management, in a context of crossbreeding with exotic highly productive breeds, have been mainly studied in tropical countries. However, similar situation and challenges are likely to exist in Mediterranean countries subjected to climatic and feed scarcity issues. The objective of this work is to identify the challenges for local breed management in a regional context of informal crossbreeding with highly productive breeds. For this purpose, the case of dairy sheep farming in the region of Thessaly, in Central Greece, was examined. Semi-structured interviews were performed in 46 farms and processed through hierarchical classification on principal components. A follow-up on seven farms raising the Karagouniko sheep breed, the main local breed of the region, was carried on during one milk campaign. Results showed that a diversity of breeding strategies involving local purebred and crossbred flocks coexist in the region. The Karagouniko breed is facing several challenges. The supply in exotic breeding males and their crosses could be wide-scaled and involved a diversity of operators, whereas the supply in breeding males of Karagouniko breed was restrained to between-farm supply among flocks under milk recording scheme. In addition, the heterogeneity of access and quality of collective rangelands affected the farming of Karagouniko breed ewes, whose purebred flocks were significantly associated with the grazing on native grasslands. Finally, unfavorable dairies' policies led Karagouniko farmers to seek higher flock milk production through levers that could impact the vulnerability of the farm, such as earlier lambing period or earlier weaning age. Farmers also questioned the use of highly productive breeds as a potential lever to reach higher flock milk production.
地方品种被视为维持多样化和特定养殖系统的重要元素。在与外来高产品种杂交的背景下,地方品种管理面临的挑战主要在热带国家得到研究。然而,在地中海国家,由于气候和饲料短缺问题,可能存在类似的情况和挑战。这项工作的目的是确定在与高产品种进行非正式杂交的区域背景下,地方品种管理所面临的挑战。为此,对希腊中部色萨利地区的奶羊养殖情况进行了考察。对46个农场进行了半结构化访谈,并通过主成分的层次分类进行处理。在一个产奶季期间,对饲养该地区主要地方品种卡拉古尼科羊的7个农场进行了跟踪调查。结果表明,该地区存在多种育种策略,包括地方纯种羊群和杂交羊群并存。卡拉古尼科品种面临着诸多挑战。外来种公羊及其杂交品种的供应可能广泛且涉及多种经营者,而卡拉古尼科品种种公羊的供应则局限于参加产奶记录计划的羊群之间的农场间供应。此外,集体牧场获取途径和质量的异质性影响了卡拉古尼科品种母羊的养殖,其纯种羊群与在原生草原上放牧显著相关。最后,不利的乳业政策导致卡拉古尼科养殖户通过一些可能影响农场脆弱性的手段来寻求提高羊群产奶量,比如提前产羔期或提前断奶年龄。养殖户还质疑使用高产品种作为提高羊群产奶量的潜在手段。