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Replacement of fish meal in diets for Australian silver perch, Bidyanus bidyanus: V. Least-cost formulation of practical diets

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Allan, G. L., Rowland, S. J., Mifsud, C., Glendenning, D., Stone, D. A. J. and Ford, A.L. (2000) Replacement of fish meal in diets for Australian silver perch, Bidyanus bidyanus: V. Least-cost formulation of practical diets. Aquaculture, 186 (3-4). pp. 327-340. ISSN 0044-8486

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Article Link: https://doi.org/10.1016/S0044-8486(99)00382-8

Abstract

Silver perch fingerlings (80.7 ± 1.2 g) were stocked at a density of 15,000 fish ha-1 in earthen ponds (0.1 ha) and cultured for six months to a market size of > 350 g fish-1. Fish were fed a reference diet (SP35; 27% fish meal) or one of two test diets formulated using a least-cost linear feed formulation program and digestibility coefficients for a range of Australian agricultural products (meat meal and plant proteins). In the test diets, all but 5% (95LC2) or 10% (95LC1) of the fish meal was replaced. Survival was high (> 95%) in all ponds. There was no significant difference between the performance of silver perch fed the two test diets. The mean weights (431.9 g and 439.8 g), daily growth rates (2.5 g fish-1) and FCRs (2.0 and 1.9) of fish fed 95LC1 and 95LC2, respectively, were significantly different (P < 0.05) from the weight (395.4 g), daily growth (2.2 fish-1 day-1) and FCR (2.2) of fish fed SP35. The diet ingredient cost to produce l kg fish was significantly lower for 95LC2 than the costs of the other diets AUD$:1.06 vs. 1.52; P < 0.05. Diet did not significantly affect body composition (nitrogen, fat, ash or energy) or sensory quality of the fish. These results show that least-cost diets containing meat meal and plant proteins (as replacements for all but 5% fish meal) are suitable for silver perch grown to market size in earthen ponds. (C) 2000 Elsevier Science B.V.

Item Type:Article
Corporate Creators:Department of Primary Industries, Queensland
Subjects:Aquaculture and Fisheries > Aquaculture > Feeding
Aquaculture and Fisheries > Fisheries > Fishery for individual species
Live Archive:03 Jan 2024 00:53
Last Modified:03 Jan 2024 00:53

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