The Evaluation of Bakery Waste as a Replacement for Corn Meal and Barley Flour in the Diets of the Common Carp (Cyprinus carpio L.) Fingerlings

Najim, Salah M.; Al-Tameemi, Riyadh A.

doi:10.21608/ejabf.2023.297432

The Evaluation of Bakery Waste as a Replacement for Corn Meal and Barley Flour in the Diets of the Common Carp (Cyprinus carpio L.) Fingerlings

Document Type : Original Article

Authors

10.21608/ejabf.2023.297432

Abstract

The current study investigated the dietary substitution effect of corn meal (CM) and barley flour (BF) with bakery (Samoon and Khubz) waste (SKW) on growth performance, feed efficiency, digestibility and chemical composition of common carp (Cyprinus carpio L.). Four isonitrogenous (31.06±1.38% crude protein) and isocaloric (361.07±2.48 kcal/kg gross energy) experimental diets were formulated to replace 0% (control diet), 25%, 50% and 75% of CM and BF with SKW. The experiment was conducted in a recirculating aquaculture system. A total of 72 fish (average individual initial weight, 10.86±0.32 g) were randomly stocked and sorted in 20-liter aquariums. Each diet was randomly assigned to triplicate groups. The fish were fed twice each day to apparent satiety (ad libitum). The results showed that there was no significant (P>0.05) effect of SKW inclusion on the growth performance, feed efficiency and chemical composition of the fish. However, results exhibited a gradual and significant (P≤0.05) increase in the dry matter and carbohydrate digestibility of the fish with increasing dietary SKW inclusion levels. The results elucidated that SKW can replace CM and BF in the diets of common carp fingerlings by a percentage up to 75, without any adverse effects on all studied criteria.

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