Abstract
The excellent feed value of wheat germ for young carp, Cyprinus carpio, has been reported in a previous paper1). Among earlier workers, GREEK et al.2) described that the feed value of raw wheat germ was improved by heating. This fact indicated the presence of a thermolabile factor which impaired digestion. Experiments were carried out to confirm the results of previous works by utilizing the materials for a carp diet. Heating of the raw wheat germ for feed was performed either by autoclaving (Wet method) or roasting (Dry method). The results obtained are as follows; 1) The feed value of wheat germ was improved with moderate heat treatment. 2) Heated wheat germ by autoclaving or roasting showed much higher feed values than unheated wheat germ. 3) The feed value of the roasted feed appeared higher than the autoclaved preparation. 4) The highest feed efficiency (value) was obtained by roasting at 70-130°C for 10 to 20 min., and by autoclaving at 110°C for 20 min.
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