Abstract

1. 1. The injection of adrenaline or dibutyril cyclic AMP to rainbow trout, Salmo gairdneri was followed by an increase in blood glucose and lactate. 2. 2. The injection of glucagon was followed by hyperglycemia without increase in blood lactate. 3. 3. None of these treatments produced significant alterations in liver glycogen. 4. 4. The simultaneous injection of dibutyril cyclic AMP and α-cyano-hydroxy-cinnamate resulted in a substantially smaller increase in blood glucose concentration than the injection of dibutyril cyclic AMP alone. 5. 5. These results show that hyperglycemia was due to gluconeogenesis under these circumstances, confirming the key role of this process in the trout.

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