Comparison of barley forage with highest, intermediate, and lowest digestible fiber (NDF) with corn forage in high production dairy cattle

高产奶牛中可消化纤维（NDF）最高、中等和最低的大麦饲料与玉米饲料的比较

• 批准号: 484992-2015
• 负责人: Yu, Peiqiang
• 金额: $ 1.4万
• 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: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=677040
• 关键词: Comparison; barley; forage; highest; intermediate

The present feeding of cereal grains to dairy and beef cattle is faced with increasing challenges in terms of animal production and health. The cost of feed grains is variable and has highly increased in recent times, threatening the economic competitiveness livestock production in western Canada. Alternative of feed resources particularly forages with high nutritive value are required to improve Feed Milk Value (FMV) and improve feeding utilization efficiency for dairy cows. However, how much difference, variation, nutrient availability and molecular structure between and within varieties of forage barley, is unknown. The objectives of this study are to reveal the unique inherent structures of three new barley and one new cool-season corn forage affected by feed processing and determine the sensitivities of intrinsic molecular structure to the processing using the advanced synchrotron radiation-based molecular infrared microspectroscopy and DRIFT /ATR-FTIR molecular spectroscopy and quantify intrinsic structural changes in relation to digestive kinetics and nutritive value in the rumen and intestine in ruminants. The proposed research program includes three projects. In project 1, we will reveal unique structural features of barley and corn forage affected by the processing and study the processing-induced changes on feed quality. In project 2, we will study N-to-energy synchronization of barley and corn forage and determine the processing impact on nutrient availability. In project 3, we will study truly absorbed protein supply of forage affected by the processing to dairy cattle. The hypothesis is that forage has unique intrinsic structure which can be detected by the advanced molecular spectroscopy techniques at a molecular level or Globar-sourced molecular spectroscopy and the feed structure changes induced by the processing will affect forage feed quality and nutrient availability, fermentation and digestion behavior in the rumen and intestines in dairy cattle. The final goals are to increase our basic knowledge of the nutritional relevance of feed intrinsic structure and feed chemistry in new barley and corn. The information obtained from this research program will support sustainable development of feed and livestock industry.

目前将谷物喂食到乳制品和牛肉面临的粮食面临着越来越多的动物产量和健康方面的挑战。饲料谷物的成本可变，并且最近有很大增加，威胁着加拿大西部的经济竞争力牲畜生产。饲料资源的替代品，特别是具有高营养价值的饲料以提高进食牛奶价值（FMV）并提高奶牛的饲料利用效率。然而，尚不清楚差异，变异，养分的可用性和分子结构和分子结构是觅食大麦的各种和内部的分子结构。这项研究的目的是揭示三个新大麦和一个新的凉爽玉米饲料的独特固有结构，该结构受饲料处理影响，并确定使用基于同步的分子辐射的固有分子结构对加工的固有分子结构的敏感性反刍动物的瘤胃和肠子。拟议的研究计划包括三个项目。 在项目1中，我们将揭示由加工影响的大麦和玉米饲料的独特结构特征，并研究加工引起的进料质量变化。在项目2中，我们将研究大麦和玉米饲料的N到能量同步，并确定加工对养分可用性的影响。在项目3中，我们将研究由奶牛加工影响的真正吸收的蛋白质供应。假设是，饲料具有独特的内在结构，可以通过分子水平或全球源性分子光谱的晚期分子光谱技术检测到，并且加工引起的饲料结构的变化将影响饲料饲料的质量和营养的可用性和营养的可用性，发酵性，发酵性，发酵和消化行为。最终目标是提高我们对新大麦和玉米中饲料内在结构和饲料化学反应的营养相关性的基本知识。从该研究计划获得的信息将支持饲料和牲畜行业的可持续发展。