Effect of Replacing Soybean Meal by Slaughterhouse Poultry By-Products Meal on Nutrient Digestibility Ecoefficiency and Accumulation of Elements of the Nile Tilapia (Oreochromis niloticus L.) under Aquaponics System Conditions | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 42, Volume 26, Issue 6, November and December 2022, Pages 719-736 PDF (1.07 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2022.275466 | ||
| Author | ||
| Mostafa A. M. Soliman et al. | ||
| Abstract | ||
| The present study was carried out to investigate the impact of substituting soybean meal with slaughterhouse poultry by-products meal on the Nile tilapia composition, mineral content, apparent digestibility co-efficiency, and basil yield composition under aquaponics system conditions. In an 84-day feeding experiment and 30-day digestibility trial, three isonitrogenous and isocaloric diets (control, SPBM50%, and SPBM100%) were formulated to contain 30% CP. As result, neither the carcass content of moisture nor the CP was affected by the experimental diets. On the other hand, the fish fed SPBM100% content showed high significant ash content, while those fed SPBM50% content recorded high significant EE and GE contents. The differences were notably not significant among the different treatments. The fish group fed SPBM50% diet recorded significantly higher concentrations of minerals than those fed control and SPBM100% diets. The concentration of heavy metals in fish muscles was within the permissible limits for human health protection. The SPBM50% treatment recorded the highest levels in DM, CP, EE and CF contents. No significant difference was observed in ADC of DM, CP, CF, NFE, and GE kcal/g (%) in fish fed the experimental diets. The ADC of EE content of diets was higher in the SPBM100% diet that exhibited significant differences with the control treatment. In conclusion, the SPBM100% has a positive effect on basil composition under aquaponic system conditions as a good source of minerals that are more available, Moreover, it has no impact on the accumulation of heavy elements in fish muscles. | ||
| Keywords | ||
| Aquaponic system Nile tilapia Sweet basil Slaughterhouse poultry By; products meal Soybean meal | ||
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