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- Title
The feasibility of partial replacement fish meal with poultry by‐products in practical diets of juvenile great sturgeon, Huso huso: Effects on growth performance, body composition, physiometabolic indices, digestibility and digestive enzymes.
- Authors
Sayed Hassani, Mir Hamed; Banavreh, Akbar; Yousefi Jourdehi, Ayoub; Mohseni, Mahmoud; Monsef shokri, Maryam; Yeganeh Rastekenari, Hooshang
- Abstract
To characterize the effects of a poultry by‐product (PBM) on the gonadosomatic, physiometabolic indices, digestibility and digestive enzymes of juvenile Huso huso (28.42 ± 0.17 g), we procured six experimental diets with 0 (control), 20%, 40%, 60%, 80% and 100% PBM to replace fishmeal. After an 8‐week feeding trial, results confirmed that the weight gain, the specific growth rate of fish fed the 80% and 100% diets were markedly inferior to other groups (p < 0.05). Also, the highest feed conversion ratio and the lowest protein efficiency ratio were observed in dietary of full replacement of fishmeal by PBM (p < 0.05). Triglyceride and cholesterol significantly increased in the PBM100 than the control and PBM20 (p < 0.05). Gastrointestinal enzyme activities were notably decreased in fish fed the diets of more than 60% substitution of fishmeal by PBM (p < 0.05). No statistical difference was observed in the digestibility of protein, dry matter, lipid and gross energy in fish fed up to 300 g/kg (PBM60) of PBM, while beyond this level, all of ADCs value reduced (p < 0.05). Taken together, the optimum range replacement by PBM was 235.9–251.8 g/kg in juvenile Huso huso diet based on the broken‐line regression analysis.
- Subjects
FISH meal; BODY composition; DIGESTIVE enzymes; FISH growth; POULTRY; POULTRY feeding
- Publication
Aquaculture Research, 2021, Vol 52, Issue 8, p3605
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/are.15205