Effect of yeast-fermentation and extrusion of canola meal on digestibility and growth performance of rainbow trout and Nile tilapia

双低菜粕酵母发酵和挤压对虹鳟鱼和尼罗罗非鱼消化率和生长性能的影响

• 批准号: 468652-2014
• 负责人: Drew, Murray
• 金额: $ 4.96万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=562967
• 关键词: Effect; yeast; fermentation; extrusion; canola

Replacing fishmeal with plant protein ingredients is hampered by the presence of antinutritional factors present in virtually all vegetable ingredients. Canola meal is particularly problematic since it contains many deleterious antinutritional factors including saponins, tannins, phytates, glucosinolates and insoluble fibre. Attempts to improve the feeding value of canola meal have concentrated on the production of canola protein concentrate. Although canola protein concentrate has significantly lower levels of antinutritional factors than canola meal, it is not economically viable as an ingredient in aquafeeds due to the high cost of manufacturing this product. An alternative and cheaper approach to reduce the level of ANFs may be fermentation with yeast and/or enzyme pretreatment. Previous studies have reported that the growth performance of fish fed fermented canola meal was significantly better than fish fed conventional canola meal.

由于几乎所有蔬菜成分中都存在抗营养因子，因此用植物蛋白成分替代鱼粉受到阻碍。双低菜粕的问题尤其严重，因为它含有许多有害的抗营养因子，包括皂苷、单宁、植酸盐、芥子油苷和不溶性纤维。提高双低菜粕饲料价值的尝试主要集中在双低菜粕浓缩蛋白的生产上。尽管双低菜蛋白浓缩物的抗营养因子水平明显低于双低菜粕，但由于该产品的制造成本较高，因此作为水产饲料的成分在经济上并不可行。另一种降低 ANF 水平的更便宜的方法可能是用酵母发酵和/或酶预处理。此前的研究表明，饲喂发酵双低菜粕的鱼的生长性能明显优于饲喂传统双低菜粕的鱼。