Faculty of Agriculture, Kagawa University, Kagawa, 761-0795, Japan.
Faculty of Agriculture, Kagawa University, Kagawa, 761-0795, Japan.
Poult Sci. 2022 Aug;101(8):101986. doi: 10.1016/j.psj.2022.101986. Epub 2022 Jun 2.
The use of insects in animal feed appears to be an efficient approach that contributes to solving the environmental issues related to leftover disposal; however, it has not been approved in some countries due to concerns about pathogenic infections. This study aimed to evaluate the feasibility of long-term substitution of fish meal in poultry feed with organic defatted black soldier fly larvae (BSFL) meal prepared from BSFL raised on leftovers. The 87 Julia laying hens (178-day-old) were allotted in a completely randomized design with three treatments (29 layers in each treatment). The laying hens were fed maize grain and soybean meal-based diet containing either 3% fish meal, 1.5% fish meal and 1.5% BSFL meal, or 3% BSFL meal supplements for 52 wk (541-day-old). Results showed that substituting fish meal with BSFL meal had no effect on the laying rate, feed intake, and feed conversion ratio of laying hens, and only the complete replacement (3% BSFL meal) significantly increased the body weight of laying hens. In terms of egg quality, there was no significant effect on eggshell parameters (weight, thickness, and strength), albumen weight, yolk height, yolk color, and Haugh unit. However, both half (1.5% fish meal and 1.5% BSFL meal) and complete substitution of fish meal increased yolk weight (P < 0.01) and egg weight (P < 0.05). In conclusion, even if BSFL were fed leftovers and the meal was defatted with organic solvents, it can be used as a poultry feed ingredient without any adverse effect. Moreover, the complete substitution of fish meal with BSFL meal may be a feasible way to effectively contribute to the laying hens' performances and poultry farming costs. In addition to fish meal, the replacement of soybean meal with BSFL meal may also needs to be further studied for the extensive BSFL meal application in poultry feed.
昆虫在动物饲料中的应用似乎是一种有效的方法，可以有助于解决与剩余物处理有关的环境问题；然而，由于对病原感染的担忧，一些国家尚未批准这种方法。本研究旨在评估用有机脱脂黑水虻幼虫（BSFL）代替鱼类饲料喂养家禽的可行性，这些幼虫是由以剩余物为食的 BSFL 饲养的。将 87 只 178 日龄的 Julia 产蛋鸡完全随机分配到三个处理组（每组 29 只）。产蛋鸡喂食含 3%鱼粉、1.5%鱼粉和 1.5%BSFL 粉或 3%BSFL 粉补充剂的玉米和豆粕基础日粮，共 52 周（541 日龄）。结果表明，用 BSFL 粉代替鱼粉对产蛋率、饲料摄入量和饲料转化率没有影响，只有完全替代（3%BSFL 粉）显著增加了产蛋鸡的体重。在蛋品质方面，对蛋壳参数（重量、厚度和强度）、蛋清重量、蛋黄高度、蛋黄颜色和哈夫单位没有显著影响。然而，半替代（1.5%鱼粉和 1.5%BSFL 粉）和完全替代鱼粉均增加了蛋黄重量（P<0.01）和蛋重（P<0.05）。综上所述，即使 BSFL 以剩余物为食并用有机溶剂脱脂，也可以作为家禽饲料成分而不会产生任何不良影响。此外，完全用 BSFL 粉替代鱼粉可能是一种有效的方法，可以有效地提高产蛋鸡的生产性能和降低家禽养殖成本。除了鱼粉，用 BSFL 粉替代豆粕也需要进一步研究，以便广泛应用 BSFL 粉于家禽饲料中。
