Evaluating Nutritional Limitations for Efficient Lamb Production

目前羊肉产品的需求量远远超过全国供应量。改善国内供应的一个主要挑战是改进具有成本效益的喂养战略。本项目旨在评估可用于提高肥育羔羊生产力、羔羊胴体特性和成本效益的实用饲养策略，同时考虑对环境的潜在影响。为了实现这一目标，羔羊将饲喂含有低但足够的粗蛋白质的肥育日粮，低但足够的粗蛋白质日粮添加脂质，不含脂肪的高粗蛋白质日粮，以及不含添加脂质的高粗蛋白质日粮（使用含可溶物的干酒糟来增加日粮粗蛋白质），或含有添加脂质的高粗蛋白质日粮（使用热损伤的全油菜籽来增加脂质和粗蛋白质）。应该注意的是，这些喂养策略代表了实用的策略，并利用了不进入人类食物链的副产品饲料。添加脂肪的日粮可以减少甲烷的排放，低粗蛋白的日粮可以提高羔羊的氮利用效率。这项研究将提供重要信息，帮助提高我们对羔羊育肥生产的了解，并通过帮助稳定供应和成本为加拿大人带来好处。

The current demand for lamb meat products far exceeds the national supply. A major challenge towardsimproving domestic supply is the refinement of cost-effective feeding strategies. This project aims to evaluatepractical feeding strategies that can be used to improve finishing lamb productivity, lamb carcasscharacteristics, and cost-effectiveness while considering potential impacts on the environment. To address theaim, lambs will be fed finishing diets containing a low but adequate crude protein, low but adequate crudeprotein diet with added lipid, high crude protein diet without fat, and high crude protein without added lipidusing distillers dry grains with solubles to increase dietary crude protein, or a high crude protein diet withadded lipid using heat damaged whole canola seed to increase both lipid and crude protein. It should be notedthat these feeding strategies represent practical strategies and utilize byproduct feeds that do not enter thehuman food chain. It is also anticipated that the diets with added lipid would reduce methane emissions and thelow crude protein diets would improve the efficiency of nitrogen use by the lambs. This study will provideimportant information to help improve our knowledge on finishing lamb production and provide a benefit toCanadians by helping to stabilize supply and cost.