Chemical composition and nutrient digestibility of insect meal for broiler

Abstract To determine the chemical composition and digestibility of insect meal for poultry made from the larvae of Tenebrio molitor (TL) and nymphs of Gryllus assimilis (GAN) a total excreta collection test was carried out, substituting 20% of the reference diet with each type of meal. The meals presented 6074 and 5975 kcal/Kg of gross energy, with 49.34% and 52.66% protein for TL and GAN respectively. The most nutrient digestibility was less than 65%, except for energy and ether-extract digestibility in the meal from Tenebrio molitor larvae, which were over 70%. The meals under analysis can be used as a source of nutrients in poultry diets.

摘要：为测定以黄粉虫（Tenebrio molitor）幼虫（TL）及异名蟋蟀（Gryllus assimilis）若虫（GAN）制备的昆虫蛋白粉作为家禽饲料的营养成分与消化率，本研究开展总排泄物收集试验（total excreta collection test），以每类蛋白粉替代20%的基础参考日粮（reference diet）。两种蛋白粉的总能（gross energy）分别为6074 kcal/kg与5975 kcal/kg，其中黄粉虫幼虫蛋白粉（TL）的粗蛋白质含量为49.34%，异名蟋蟀若虫蛋白粉（GAN）为52.66%。除黄粉虫幼虫蛋白粉的能量与乙醚提取物（ether-extract）消化率高于70%外，其余营养物质的消化率均低于65%。本研究所分析的两种昆虫蛋白粉均可作为家禽日粮的营养源。