Regional Centre of ICAR- Central Inland Fisheries Research Institute, Hessaraghatta, Bangalore, 560089, India.
ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata, 700120, India.
Environ Sci Pollut Res Int. 2022 Oct;29(48):72968-72978. doi: 10.1007/s11356-022-20926-3. Epub 2022 May 26.
The growth and sustainability of freshwater aquaculture are highly dependent on economic feed which is the major running cost. Fish feed industries depend on the high-priced fish meal (FM) as protein source in feed formulations. In this context, a nutrient-rich, and palatable insect meal-based fish feed was developed incorporating the black soldier fly (BSF) (Hermetia illucens) prepupae meal (BSFPM) reared on organic waste imparting additional benefit of waste bioremediation to make cost-effective feed. Feeding trial was conducted to evaluate growth performance on monosex Nile tilapia (Oreochromis niloticus). The different treatments were (1) dried BSF prepupae, (2) BSF prepupae and BSFPM-based feed in 1:1 proportion, (3) BSFPM feed, and (4) control feed with FM. The survival, growth, feed efficiency, and haematological parameters were not significantly different between BSFPM and control feed. Fish fed with control feed and BSFPM feed showed significantly higher (P ≤ 0.05) weight gain, specific growth rate, and percentage weight gain. Lowest food conversion ratio (P ≤ 0.05) was recorded for fish fed control feed with a significantly higher feed efficiency ratio (0.65 ± 0.034) and protein efficiency ratio (2.11 ± 0.063). The mean corpuscular volume of blood in fish fed BSF prepupae (128.5 ± 3.2) is significantly higher. The good growth of fish fed BSFPM feed may be attributed to the essential amino acids which are not limiting in feed. Absence of microbes and safe level heavy metals in BSFPM feed ensures safety of the ingredient. Hence, it can be used as a suitable protein source in feed formulations.
淡水水产养殖的增长和可持续性高度依赖经济饲料，这是主要的运营成本。鱼饲料行业依赖高价的鱼粉（FM）作为饲料配方中的蛋白质来源。在这种情况下，开发了一种营养丰富、可口的以昆虫粉为基础的鱼饲料，其中包含了以有机废物为食的黑水虻（BSF）（Hermetia illucens）预蛹粉（BSFPM），这为废物生物修复提供了额外的好处，使饲料更具成本效益。进行了喂养试验，以评估单性尼罗罗非鱼（Oreochromis niloticus）的生长性能。不同的处理方法是：（1）干 BSF 预蛹；（2）BSF 预蛹和 BSFPM 以 1:1 的比例混合的饲料；（3）BSFPM 饲料；（4）以 FM 为蛋白质来源的对照饲料。BSFPM 和对照饲料之间的存活率、生长、饲料效率和血液学参数没有显著差异。与对照饲料相比，投喂对照饲料和 BSFPM 饲料的鱼的体重增加、特定生长率和体重增长率显著更高（P≤0.05）。投喂对照饲料的鱼的食物转化率最低（P≤0.05），饲料效率比（0.65±0.034）和蛋白质效率比（2.11±0.063）显著更高。投喂 BSF 预蛹的鱼的平均红细胞体积（128.5±3.2）显著更高。投喂 BSFPM 饲料的鱼生长良好，这可能归因于饲料中没有限制的必需氨基酸。BSFPM 饲料中没有微生物和安全水平的重金属，确保了成分的安全性。因此，它可以作为饲料配方中的一种合适的蛋白质来源。
