A pigoon is a fictional
creature from Margaret Atwood's novel 'Oryx and Crake'.
A pigoon is a laboratory (commercial)
pig with human stems cells implanted into it, to grow organs of
choice.
"The goal of the pigoon project was to grow an assortment of foolproof human-tissue organs in a transgenic knockout
pig host..."
(M.Atwood, Oryx and Crake, Virago
Press 2004, p. 25)