Tidsskrift : Aquaculture Nutrition , vol. 11 , p. 251–256–6 , 2005
Utgiver : Blackwell Publishing
Trykt : 1353-5773
Elektronisk : 1365-2095
Publikasjonstype : Vitenskapelig artikkel
Sak : 4
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Digestibility and utilization of a fishmeal-based diet extruded at 103 or 137 °C were examined. Each of the diets was fed to 0.5-kg rainbow trout in nine tanks supplied with freshwater. Specific growth rate was significantly (P < 0.05) elevated for trout fed the feed extruded at 137 °C. The apparent digestibilities of protein and energy, feed conversion ratio, retentions of nitrogen and energy were not significantly affected by extrusion temperature. Digestibility of ash was significantly reduced in the diets produced at 137 °C.