Journal : Aquaculture Nutrition , vol. 11 , p. 251–256–6 , 2005
Publisher : Blackwell Publishing
International Standard Numbers
Printed : 1353-5773
Electronic : 1365-2095
Publication type : Academic article
Issue : 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.