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，以大麦谷物喂养奶牛和肉牛在动物生产和健康方面面临越来越大的挑战。大麦粒的成本变化无常，近年来急剧上升，威胁着畜牧生产的经济竞争力。为提高奶牛的料奶价值，提高饲料利用效率，需要替代饲料资源，特别是高营养价值、低成本的燕麦。然而，燕麦品种和类型之间和内部的差异、变异、营养有效性和内部结构影响有多大，是未知的。本研究的目的是利用一种系统的方法来制定替代喂养策略，通过在可持续乳制品生产中整合或最大限度地替代大麦，更有效地利用草原上种植的饲料和碾磨型燕麦，以提高动物产量和健康；通过利用替代饲料资源，帮助乳制品行业制定低成本/替代喂养策略，并提高燕麦生产商及其相关行业的经济回报。拟议的研究计划包括五个项目。在Project 1中，我们将系统地比较燕麦与普通大麦的品种和类型，以找到奶牛FMV最高的最佳燕麦品种和类型。在项目2中，我们将通过饲料加工应用改善/增加饲料型和碾磨型燕麦籽粒的FMV。在项目3和4中，我们将开发替代喂养策略，以找到高产泌乳奶牛中大麦谷物与饲料和碾磨型燕麦谷物的最大或最佳替代水平。在项目5中，我们将制定高产泌乳奶牛的原料和与加热相关的加工饲料和磨粒型燕麦的喂养策略。最终目标是使草原燕麦种植者的利益和经济回报最大化，并通过燕麦品种和类型的选择、饲料加工和最佳饲料成分的混合，增加和增强奶牛最佳营养供应的基本知识，从而推进我们现有的知识。从该研究项目中获得的信息将支持加拿大饲料和畜牧业的可持续发展。

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.