Development of hybrid bromegrass cultivars with enhanced NDF digestibility

开发具有增强 NDF 消化率的杂交雀麦品种

• 批准号: 493143-2015
• 负责人: Penner, Gregory
• 金额: $ 1.71万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=661917
• 关键词: Development; hybrid; bromegrass; cultivars; enhanced

Beef cattle production, regardless of season, relies on the availability of forage. Sustainable and consistent production of high-quality forage may provide an opportunity to improve performance of beef cattle (i.e. growth or reproductive efficiency) thereby improving feed conversion and reducing feed cost. This project describes the necessary work for the first selection cycle to develop a novel hybrid bromegrass cultivar selected for increased neutral detergent fibre (NDF) digestibility. Specifically, the objective of this project is to screen existing cultivars and new breeding lines of hybrid bromegrass at the Agriculture and Agri-Food Canada Research Centre (Saskatoon, SK). The individual plants with an inherently high NDF digestibility can be selected without compromising agronomic characteristics (yield, vigour, and regrowth). This project includes breeding nursery establishment, initial selection, development of lines with high NDF digestibility, establishment of progeny plants in a field nursery and the evaluation of the progeny. It is anticipated that 3 to 4 selection cycles will be needed to establish a new cultivar with improved NDF digestibility. In this program, we will focus on improved NDF digestibility as the nutritive value, and will assess forage yield, vigour, and regrowth characteristics to ensure that our selection does not negatively affect agronomic characteristics. It is important to note that this project also represents a cross-disciplinary collaboration between a plant breeder and animal scientists.**

肉牛的生产，不分季节，都依赖于饲料的供应。可持续和稳定的优质饲草生产可为提高肉牛的生产性能(即生长或繁殖效率)提供机会，从而提高饲料转化率和降低饲料成本。本项目描述了为提高中性洗涤纤维(NDF)的消化率而选择的第一个选择周期所必需的工作，以开发新的杂交雀麦品种。具体地说，该项目的目标是在加拿大农业和农业食品研究中心(萨斯卡通，密苏里州)筛选现有的杂交雀麦品种和新的育种品系。可以在不影响农艺性状(产量、活力和再生能力)的情况下，选择具有固有高NDF消化率的单株。该项目包括育种苗圃的建立、初选、高NDF消化率品系的选育、田间苗圃后代植株的建立和后代的评价。预计将需要3至4个选择周期来建立一个具有更高NDF消化率的新品种。在本项目中，我们将重点关注提高NDF消化率作为营养价值，并将评估牧草产量、活力和再生特性，以确保我们的选择不会对农艺性状产生负面影响。值得注意的是，这个项目也代表了植物育种者和动物科学家之间的跨学科合作。