Nutritive evaluation of cold-pressed meals for broiler chickens

饲料成本占大多数家禽生产成本的60-70%。家禽业需要做好准备，利用来自新作物和现有作物的饲料成分，以便能够有效地管理饲料成本。要做到这一点，这些饲料成分的可用营养成分必须是可用的，使其能够纳入饮食。从用于生物柴油工业的油籽中开发的副产品补充剂有可能用作家禽的替代蛋白质和能源，为该行业提供替代饲料。根据生物燃料油的经济价值，冷榨油籽以生产含有较高残油的粕可以为目前的石油开采程序提供具有成本效益的替代方案。目前油菜和其他油籽作物如大豆、亚麻荠和埃塞俄比亚芥的产量增加，可能会提供大量有益于用于家禽饲料的各种饲料成分。拟议的研究将评估加工油菜籽，如油菜，大豆，亚麻荠和carinata生产的膳食。 将确定由油菜籽、大豆、亚麻荠和隆线叶油菜籽制成的冷榨粉的营养成分。还将研究通过热处理和膳食酶添加来提高这些产品利用率的策略。建立肉鸡数据库将有助于更有效地制定饮食配方。测试成分的测定值将用于配制开始期、生长期和育成期肉鸡饲料，以评价冷压粉对生长性能的影响。不仅为加拿大家禽饲料中常用的成分确定营养成分值，而且为加拿大正在开发的成分确定营养成分值，这将进一步提高肉鸡饲料配方的效率和家禽的后续生长性能，并可能增加生产商的回报。加拿大家禽业将受益于获得一个营养数据库，以获得具有成本效益的替代饲料成分，这将有助于制定成本较低的饮食，并可能导致改善饲料转化。

The cost of feed represents 60-70% of the cost of production for most classes of poultry. The poultry industry needs to be poised to take advantage of feed ingredients from new and existing crops to be able to efficiently manage feed costs. To do so, usable nutrient composition of these feed ingredients must be available to enable their incorporation into diets. By-product supplements developed from oilseeds used for the biodiesel industry have potential to be used as alternative protein and energy sources for poultry giving the industry feeding alternatives. Based on the economic value of the oils for biofuels, cold-pressing of the oilseeds to produce meals that contain higher residual oil may provide cost-effective alternatives to current oil extraction procedures. Current increases in production of canola and other oilseed crops such as soybeans, camelina, and carinata, potentially provide a variety of feed ingredients in quantities beneficial for use in poultry feeds. The proposed study will evaluate meals produced from the processing of oilseeds such as canola, soybeans, camelina and carinata. Nutrient profiles will be determined for cold-pressed meals made from canola, soybean, camelina and carinata oilseeds. Strategies to enhance utilization of these products through heat treatment and dietary enzyme addition will also be investigated. The development of a database for broiler chickens will allow for more efficient diet formulation. Values determined for the test ingredients will be used to formulate starter, grower, and finisher broiler chicken diets to evaluate the effects of the cold-pressed meals on growth performance. Nutrient composition values determined not only for ingredients typically used in Canadian poultry diets but also ingredients being developed in Canada would further improve the efficiency of feed formulation for broilers and subsequent growth performance of the birds and potentially increase returns for the producer. The Canadian poultry industry will benefit by having access to a nutrient database for cost-effective alternative feed ingredients which will facilitate the formulation of lower cost diets and potentially result in improved feed conversion.