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Mounes HAM, Abd-El Azeem ZMA, Abd El-Bary DA, Al-Sagheer AA, Abd-Elhakim YM, Hassan BA, Sadek SS, Ahmed KM. Effect of Substituting Soybean Meal in Oreochromis niloticus Diets with Pumpkin ( Cucurbita maxima) Seed Cake on Water Quality, Growth, Antioxidant Capacity, Immunity, and Carcass Composition. Animals (Basel) 2024; 14:195. [PMID: 38254364 PMCID: PMC10812734 DOI: 10.3390/ani14020195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/29/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
A 10-week feeding experiment was performed to determine the impacts of partial substitution of soybean meal (SB) with pumpkin seed cake (PSC) in Oreochromis niloticus diets on water quality, growth rate, antioxidant capacity, immunity, and carcass composition. One hundred and fifty tilapia fish (average weight, 11.93 ± 0.17 g) were randomly allocated to five diets. The first diet (the basal diet) contained 420 g of SB per kg of feed. The remaining four diets, namely, D1, D2, D3, and D4, had SB partially replaced by PSC at 10%, 20%, 30%, and 40%, respectively. The results revealed that D4 and D1 significantly improved dissolved oxygen levels, while water temperature, pH, total ammonia, and nitrate levels were not significantly affected. Replacing SB with PSC significantly improved specific growth performance indicators and feed conversion compared to the control, with the D4 group showing the best values. Increasing PSC levels decreased serum glucose, aspartate aminotransferase, alanine aminotransferase, cholesterol, and triglyceride levels. In contrast, the D4 group had higher globulin, albumin, total protein, and lysozyme serum levels. Moreover, fish-fed PSC had significantly increased superoxide dismutase, glutathione peroxidase, and catalase activities and significantly decreased malondialdehyde levels. Increasing PSC substitution levels in fish diets increased the ash and crude lipid contents in the bodies of the fish, while crude protein and moisture decreased. In conclusion, replacing SB with PSC in fish diets significantly enhances growth performance, feed conversion, and fish health. Moreover, the findings suggest that PSC can be a promising alternative protein source for sustainable aquaculture practices.
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Affiliation(s)
- Hossam A. M. Mounes
- Limnology Department, Central Laboratory for Aquaculture Research, Agricultural Research Center, Abassa, Abu Hammad 44662, Egypt
| | - Zeinab M. A. Abd-El Azeem
- Fish Production Branch, Department of Animal Production, Faculty of Agriculture, Ain Shams University, Cairo 11241, Egypt
| | - Dena. A. Abd El-Bary
- Regional Center for Food and Feed, Agricultural Research Center, Giza 12619, Egypt
| | - Adham A. Al-Sagheer
- Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Yasmina M. Abd-Elhakim
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt;
| | - Bayan A. Hassan
- Pharmacology Department, Faculty of Pharmacy, Future University, Cairo 11835, Egypt;
| | - Sherif S. Sadek
- Aquaculture Consultant Office, 9 Street No. 256, New-Maadi, Cairo 11435, Egypt;
| | - Kareem. M. Ahmed
- Fish Production Branch, Department of Animal Production, Faculty of Agriculture, Ain Shams University, Cairo 11241, Egypt
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