<；P>；PROBLEM TO BE SOLVED: To provide a simulation device which enables simulation related with the management of a ranch or the like comprising a plurality of animals. <；P>；SOLUTION: The simulation device is configured to calculate the fluctuation of the number of delivery experienced animals which have experienced in delivery and the number of delivery inexperienced animals which have inexperienced in delivery in a prescribed period in a prescribed animal group where a plurality of animals exist, and provided with: a delivery inexperienced animal changing number calculation means； a first pregnant animal changing number calculation means； a delivery experienced animal changing number calculation means； a born animal number calculation means； and a term-end delivery inexperienced animal number calculation means. <；P>；COPYRIGHT: (C)2011,JPO&INPIT
