Effect of replacing fish meal with bacterial single-cell protein on body composition and digestive enzymes activity of rainbow trout Oncorhynchus mykiss (Walbaum, 1792)

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ZAMANI A.

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Journal Paper

Paper Information

Journal: JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH Year:2020 | Volume:7 | Issue:4 Page(s): 64-78

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Title

Effect of replacing fish meal with bacterial single-cell protein on body composition and digestive enzymes activity of rainbow trout Oncorhynchus mykiss (Walbaum, 1792)

Author(s)

ZAMANI A. | Issue Writer Certificate

Keywords

O.mykiss

Single-cell protein

Body composition

Trypsin

Abstract

In this study Body composition and digestive enzymes activity were assessed in rainbow trout (O. mykiss) fry (weight 2. 51 ± 0. 55 g) fed with bacterial single-cell (BSC) as a dietary protein source replaced with fish meal in a completely randomized design with three replications for each treatment for 6 weeks. Experimental diets were prepared in 5 treatments as isonitrogenous with different levels of fish meal and BSC (100% fish meal (A), 75% fish meal and 25% BSC (B), 50% fish meal and 50% BSC (C), 25% fish meal and 75% BSC (D), and 100% BSC (E)). The Body composition findings showed that the highest lipid and protein and the lowest moisture and ash was revealed in fish fed with diet C while the lowest lipid and protein and the highest moisture and ash was observed in fish fed with diet E. Enzymatic assessment from pyloric caeca and intestine showed that Trypsin and α-amylase were increased significantly in fish fed with diet C. Moreover, alkaline phosphatase activity in fish fed with diet D was higher than those in diet E. Based on the results of this study, it is recommended that BSC could be properly replaced up to 50 % with fish meal in the diet of rainbow trout fry.

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APA: Copy

ZAMANI, A.. (2020). Effect of replacing fish meal with bacterial single-cell protein on body composition and digestive enzymes activity of rainbow trout Oncorhynchus mykiss (Walbaum, 1792). JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH, 7(4 ), 64-78. SID. https://sid.ir/paper/650547/en

Vancouver: Copy

ZAMANI A.. Effect of replacing fish meal with bacterial single-cell protein on body composition and digestive enzymes activity of rainbow trout Oncorhynchus mykiss (Walbaum, 1792). JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH[Internet]. 2020;7(4 ):64-78. Available from: https://sid.ir/paper/650547/en

IEEE: Copy

A. ZAMANI, “Effect of replacing fish meal with bacterial single-cell protein on body composition and digestive enzymes activity of rainbow trout Oncorhynchus mykiss (Walbaum, 1792),” JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH, vol. 7, no. 4 , pp. 64–78, 2020, [Online]. Available: https://sid.ir/paper/650547/en

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