Develop new strategies to efficiently utilize oat grains in high production dairy cows to maximum economic return and benefit to prairie oat growers

目前用大麦谷物饲喂奶牛和肉牛在动物生产和健康方面面临着越来越多的挑战。大麦谷物的成本是多变的，近年来大幅上涨，威胁着畜牧业的经济竞争力。为了提高奶牛的饲用价值，提高饲料利用效率，需要替代营养价值高、成本低的饲料资源，特别是燕麦。然而，燕麦品种和类型之间和品种内的差异、变异、养分有效性和内部结构影响有多大，尚不清楚。本研究的目的是用系统的方法制定替代饲喂策略，通过整合或最大限度地替代可持续奶牛生产中的大麦来更有效地利用草原上种植的饲料型和碾磨型燕麦谷物，以提高畜牧业的生产和健康；帮助乳制品行业通过利用替代饲料资源来开发低成本/替代饲喂策略，并增加燕麦生产商及其相关行业的经济效益。拟议的研究计划包括五个项目。在项目一中，我们将对燕麦的品种和类型与普通大麦进行系统的比较，以找到奶牛FMV最高的燕麦品种和类型。在项目2中，我们将通过饲料加工应用来改善/增加饲料型和碾磨型燕麦的FMV。在项目3和项目4中，我们将开发替代饲喂策略，以寻找高产哺乳奶牛用饲料和碾磨型燕麦谷物替代大麦谷物的最大或最佳水平。在项目5中，我们将为高产哺乳奶牛的原料和与加热相关的加工饲料和碾磨型燕麦谷物制定饲养策略。最终目标是通过燕麦品种和类型的选择、饲料加工和最佳饲料成分混合来增加和加强对奶牛最佳营养供应的基本知识，从而最大限度地提高草原燕麦种植者的利益和经济效益，并促进我们目前的知识。本研究项目所获得的信息将为加拿大饲料和畜牧业的可持续发展提供支持。

The present feeding of barley grains to dairy and beef cattle is faced with increasing challenges in terms of animal production and health. The cost of barley grains is variable and has highly increased in recent times, threatening the economic competitiveness livestock production. Alternative of feed resources particularly oat grain with high nutritive value and low cost are required to improve Feed Milk Value (FMV) and improve feeding utilization efficiency for dairy cows. However, how much difference, variation, nutrient availability and internal structure impact between and within varieties and types of oat grain, is unknown. The objectives of this study are to use a systematic approach to develop alternative feeding strategies to more efficiently utilize both feed- and milling-type of oat grain grown in Prairie by integration with or maximum replacing barley in sustainable dairy production for improving animal production and health; To assist dairy industry to develop low-cost/alternative feeding strategies by utilizing alternative feed resources, and To increase economic returns to oat producers and its related industries. The proposed research program includes five projects. In Project 1, we will systematically compare varieties and types of oat grain with common barley to find best variety and type of oat grain with highest FMV for dairy cows. In project 2, we will improve/increase FMV for both feed- and milling type of oat grain through feed processing applications. In Projects 3 & 4, we will to develop alternative feeding strategies to find a maximum or optimal replacement level of barley grain with the feed- and milling-type of oat grain in high production lactation dairy cow. In Project 5, we will develop feeding strategy for both raw and heating-related processed feed-and milling Type of oat grain in high production lactation dairy cows. The final goals are to maximize benefit and economic return to prairie oat growers and advance our current knowledge by increasing and enhancing basic knowledge of the optimal nutrient supply to dairy cattle through oat variety and type selection, feed processing, and optimal feed ingredient blending. The info obtained from this research program will support sustainable development of feed and livestock industry in Canada.