Al Sagan Ahmed A, Al-Abdulkader Ahmed M, Al-Dakhil Abdullah I, Khalil Shady, Al-Khuraish Muteb M
King Abdulaziz City for Science and Technology. Saudi Arabia.
Saudi J Biol Sci. 2021 Jan;28(1):262-271. doi: 10.1016/j.sjbs.2020.09.058. Epub 2020 Oct 8.
Food waste is one of the major global challenges that have adverse socioeconomic and environmental impacts. Therefore, studying food waste utilization potentials and minimizing its negative consequences becomes imperative. This study aims to assess the technical and economic potentials of substituting corn with unconventional extruded dried Arabic Bread waste (EDABW) in broilers' diets, in terms of broilers' performance, carcass characteristic, economic net returns, and income over feed cost (IOFC). One hundred eighty unsexed one-day-old broiler birds of Ross breed were distributed randomly in six treatments (0, 20, 40, 60, 80, and 100% EDABW group) of isocaloric and isonitrogenous diets in a completely randomized design with six replicated (5 chicks/replicate). The investigated traits were broilers' performance (live body weight, total feed intake, total feed conversion ratio, and total weight gain. Other traits such as carcass weight, abdominal fat, edible offal (liver, heart, and gizzard), eviscerated (breast muscles, drum and thigh muscles, and wings) were weighed and expressed based on a live body weight. Results showed that the 20% replacement level of corn with EDABW generated the highest increase in the live body weight and the eviscerated carcass at about 4.24% g and 4.90%, respectively. On the other hand, the economic analysis showed potential reductions in the broilers' diet cost and the total broilers' production cost as the levels of corn substitution with by unconventional EDABW increased. The reductions were estimated at 5.1%, 6.3%, 8.4%, 9.3%, and 9.9% at substitution levels of 20%, 40%, 60%, 80%, and 100%, respectively as compared to the control diet. The results also showed a potential increase in the net economic returns of broiler meat as the increase in substitution levels ranged between 3.5-06.8% and 4.3-8.3% as compared to the control diets using the average retail and wholesale prices of broiler meats, respectively. In addition, the maximum IOFC was estimated potentially at a 20% substitution level of corn with EDABW. Conclusively, the study results show promising technical and economic potentials for unconventional EDABW in broilers' diets that could lead to a thriving industry of unconventional broilers' diets with high net economic returns and maximum IOFC.
食物浪费是具有不利社会经济和环境影响的主要全球挑战之一。因此，研究食物浪费的利用潜力并尽量减少其负面后果变得势在必行。本研究旨在评估用非常规挤压干燥阿拉伯面包废弃物（EDABW）替代肉鸡日粮中的玉米在肉鸡生产性能、胴体特性、经济净回报和饲料成本收益（IOFC）方面的技术和经济潜力。180只未分性别的罗斯品种一日龄肉鸡被随机分配到六种处理组（0%、20%、40%、60%、80%和100% EDABW组），采用完全随机设计，每组等热量、等氮日粮，共六个重复（每个重复5只鸡）。所研究的性状包括肉鸡生产性能（活体重、总采食量、总饲料转化率和总增重）。其他性状如胴体重、腹脂、可食内脏（肝脏、心脏和砂囊）、去内脏后的部分（胸肌、腿肌和翅膀）称重后以活体重为基础表示。结果表明，用EDABW替代20%的玉米时，活体重和去内脏胴体的增加量最高，分别约为4.24%和4.90%。另一方面，经济分析表明，随着用非常规EDABW替代玉米水平的提高，肉鸡日粮成本和肉鸡总生产成本有潜在降低。与对照日粮相比，在替代水平为20%、40%、60%、80%和100%时，成本降低估计分别为5.1%、6.3%、8.4%、9.3%和9.9%。结果还表明，使用肉鸡平均零售价和批发价时，随着替代水平的提高，肉鸡净经济回报有潜在增加，与对照日粮相比，增幅分别在3.5 - 6.8%和4.3 - 8.3%之间。此外，在用EDABW替代20%玉米时，IOFC估计有最大值。总之，研究结果表明非常规EDABW在肉鸡日粮中具有可观的技术和经济潜力，这可能会带来一个具有高净经济回报和最大IOFC的非常规肉鸡日粮蓬勃发展的产业。
Zotero 插件