Characterization and improvement of novel oilseed meal with supplemental enzymes in broiler chickens

谷物玉米和小麦以及豆粕分别是加拿大家禽饲料中传统上最广泛使用的能源和氨基酸来源，其价格一直在飙升。因此，需要廉价的替代品来管理饲料成本。山茶粉是从油茶科油料作物中提取植物油的副产品，可作为加拿大家禽日粮中谷物和豆粕的部分替代品。然而，山茶粉的纤维含量很高。家禽对膳食纤维消化不良，可能会降低养分利用率。关于山茶粉对家禽的营养价值的信息有限。此外，在以山茶粉为基础的日粮中添加纤维降解酶对家禽营养利用的影响的信息也很缺乏。因此，本课题的目的是研究山茶粉对肉鸡的营养价值，并确定在以山茶粉为基础的日粮中添加纤维降解酶对肉鸡营养物质利用率的影响。该方法将包括测定：(1)肉鸡对茶粕氨基酸的标准化回肠消化率和代谢能值；(2)在以茶粕为基础的日粮中添加纤维降解酶对肉鸡营养物质消化率和代谢能值的影响。这项研究的数据将被用于优化利用山茶粉来配制家禽饲料。随后，加拿大增加了对山茶粉作为家禽饲料的利用，这将降低生产禽肉和禽蛋的成本。该项目的结果也将使加拿大生物系统公司受益，因为它提供了确凿的证据，证明他们的纤维降解酶在改善山茶粉的营养价值方面的有效性。

Prices of the grains corn and wheat, and soybean meal traditionally the most widely used energy and amino acid sources, respectively, in poultry diets in Canada, have been soaring. Thus, a need exists for cheap alternatives to manage feed cost. Camelina meal, a co-product of vegetable oil extraction from camelina (oilseed crop of Brassica family) may serve as partial alternative to the grains and soybean meal in poultry diets in Canada. However, camelina meal has a high content of fibre. Dietary fibre is poorly digested by poultry and may decrease nutrient utilization. There is limited information on the nutritive value of the camelina meal for poultry. Also, there is lack of information on the effect of supplementing fiber-degrading enzymes to diets based on the camelina meal on nutrient utilization by poultry. Thus, the objective of this project is to characterize the nutritive value of the camelina meal for broilers, and determine the effect adding fiber-degrading enzymes in diets based on camelina meal on nutrient utilization by broilers. The methodology will include determining: (1) the standardized ileal digestibility of amino acids and metabolizable energy value of camelina meal for broilers; and (2) the effect of adding fiber-degrading enzymes to camelina meal-based diets for broilers on the nutrient digestibility and metabolizable energy value. Data from this research will be used to optimize utilization of camelina meal in formulating poultry feeds. The subsequent increase in utilization of camelina meal as feedstuffs for poultry in Canada will reduce cost to produce poultry meat and eggs. The results from this project will also benefit the Canadian Biosystems Inc. by providing solid evidence about the efficacy of their fiber-degrading enzymes with regard to improving the nutritional value of camelina meal.