A test of a feed budget model for rainbow trout, Oncorhynchus mykiss (Walbaum) |
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| Authors: | J Bailey & A Alanärä |
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| Institution: | Department of Aquaculture, Swedish University of Agricultural Sciences, Umeå, Sweden |
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| Abstract: | A feed budget model, which enables farmers to adapt a general model to local conditions, was tested on rainbow trout, Oncorhynchus mykiss (Walbaum). The model has two major components; component 1 is used to calculate the energy required for one unit of biomass gain (g or kg) and component 2 estimates the daily growth increment (g or kg). Both components can be adjusted in relation to prevailing environmental conditions and, together, they express the daily energetic requirement of the specific species or strain. Fish fed using the model as a guide had a high rate of growth and good feed conversion. The model accurately predicted growth over the experiment, and is presented as a means of calculating the daily feed budget in fish farming. Growth of fish fed using self-feeders is presented for comparison with the results obtained using the model. |
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| Keywords: | feed management growth Oncorhynchus mykiss rainbow trout energy budget feeding model feed budget |
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