Hatab Mahmoud H, Ibrahim Nashaat S, Sayed Waheed A A, Badran Aml M M, Rumpold Birgit A
Biological Application Department, Nuclear Research Center, Egyptian Atomic Energy Authority, P.O.13759 Egypt.
Poultry Breeding Department, Animal Production Research Institute, Agriculture Research Center, Egypt.
Poult Sci. 2025 Apr 19;104(7):105198. doi: 10.1016/j.psj.2025.105198.
For a transformation of the global food system towards sustainability, circular approaches and nutrient-rich side-stream valorization are mandatory. Moreover, affordable and sustainable alternatives to corn, soy, and fish meal are needed in poultry production. Recently, insects and their derived products have gained research interest as alternative sources of conventional feed ingredients in poultry nutrition. The Mediterranean fruit fly (medfly; Ceratitis capitata) production industry using sterile insect technology amasses thousands tonnes of rearing residues annually. This study is the first to shed light on the potential use of medfly rearing residues (MFRR), as a partial replacement for corn and soybean in Gimmizah chicks' diets, with or without biological supplementation (BS). It evaluates their effects on growth, carcass characteristics, blood indices, serum biochemical and histological changes in internal organs. A 7-week trial was conducted using 240, 15-day-old Gimmizah chicks, which were randomly divided into four groups (6 replicates, 10 birds each): the first group (T1) was fed a corn-soybean control diet, the 2nd group (T2) fed the control diet enriched with 1 ml BS/kg diet. The 3rdgroup (T3) received the control diet after replacing 10 % of corn and soybean with MFRR meal, while the 4th group (T4) fed the 10 % replacement by MFRR combined with 1 ml of BS. All groups received isoenergetic and isoprotienic diets with free access to feed and water for 49 days trial period. Compared to the control, both BS and MFRR inclusion with or without BS (T4 and T3, respectively) positively improved body weight, feed consumption, feed conversion, performance index and carcass yield. Blood analysis showed increased red blood cells, hemoglobin, packed cell volume, total protein, albumin, globulins, triglycerides, cholesterol, thyroxine hormone, uric acid and creatinine, with no adverse histological alteration in the bursa or intestine. In conclusion, the study suggests that MFRR can effectively replace 10 % of traditional feed ingredients, with or without BS, enhancing chicks' performance and health. Further future studies are recommended for broader application of MFRR in poultry nutrition.
为使全球粮食系统向可持续性转变，循环利用方法和富含营养的副产物增值利用必不可少。此外，家禽生产需要价格合理且可持续的玉米、大豆和鱼粉替代品。最近，昆虫及其衍生产品作为家禽营养中传统饲料成分的替代来源受到了研究关注。采用无菌昆虫技术的地中海实蝇（medfly；Ceratitis capitata）生产行业每年会产生数千吨饲养残渣。本研究首次揭示了地中海实蝇饲养残渣（MFRR）作为吉米扎雏鸡日粮中部分替代玉米和大豆的潜在用途，有无生物添加剂（BS）均可。研究评估了其对雏鸡生长、胴体特性、血液指标、血清生化指标以及内脏组织学变化的影响。使用240只15日龄的吉米扎雏鸡进行了为期7周的试验，雏鸡被随机分为四组（每组6个重复，每组10只）：第一组（T1）饲喂玉米 - 大豆对照日粮，第二组（T2）饲喂添加1毫升BS/千克日粮的对照日粮。第三组（T3）在对照日粮中用MFRR粉替代10%的玉米和大豆，而第四组（T4）饲喂用MFRR替代10%并添加1毫升BS的日粮。在为期49天的试验期内，所有组均饲喂等能量和等蛋白日粮，自由采食和饮水。与对照组相比，添加BS和添加或不添加BS的MFRR（分别为T4和T3）均能显著提高体重、采食量、饲料转化率、生产性能指数和胴体产量。血液分析显示红细胞、血红蛋白、血细胞比容、总蛋白、白蛋白、球蛋白、甘油三酯、胆固醇、甲状腺激素、尿酸和肌酐增加，法氏囊或肠道无不良组织学改变。总之，该研究表明，无论有无BS，MFRR均可有效替代10%的传统饲料成分，提高雏鸡的生产性能和健康水平。建议未来进一步开展研究，以便MFRR在家禽营养中得到更广泛的应用。
