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The effect of dietary energy source on diet digestibility and growth performance of rainbow trout

Published online by Cambridge University Press:  20 November 2017

R.N. Weatherup  and
K.J. McCracken
R.N. Weatherup
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down BT26 6DR, Northern Ireland
K.J. McCracken
Affiliation:
Department of Agriculture for Northern Ireland, Newforge Lane, Belfast BT9 5PX, Northern Ireland
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Extract

There is confusion in the literature as to the effects of carbohydrates in the diet of fishes. Warmwater, herbivorous fishes can digest more complex carbohydrates (Shiau and Chuang, 1995) while coldwater, carnivorous fish may digest glucose better. However high levels of dietary glucose may increase fat deposition in the viscera (Bergot, 1979). Furthermore, Kaushik and de Oliva-Teles (1985) reported that heat treatment of raw starch in diets for rainbow trout improved its utilisation. This study was conducted to determine the digestibility of diets containing raw wheat, extruded wheat, glucose and fish oil. The effects of these diets on growth performance and body composition of trout were also determined.

Type
Programme
Information
Proceedings of the British Society of Animal Science , Volume 1999 , 1999 , pp. 222
Copyright
Copyright © The British Society of Animal Science 1999

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References

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