What was the name given to the school of thought which the three pigs had turned Old Major's teaching into?

"Animalism" becomes the name of the school of thought that
Old Major inspires and that the pigs adopt when he dies.  Snowball, Squealer, and
Napoleon begin to take charge of this philosophy and start to foment rebellion amongst
the animals on Manor Farm and even set their sights to other farms.  The end purpose of
their intent is to overthrow the humans, like Farmer Jones, and assert their own control
of their own labor and the means of production.  Animalism becomes the code by which the
pigs profess to live in a new world order.  It becomes the talking point between them
and the other animals.  There is some fundamental struggle in trying to convince the
animals of the need for change under Animalism.  Some of them, like Mollie, continually
feel the need for either loyalty to Jones or self- serving elements that preclude the
collective element inherent in Animalism.  Yet, the pigs do not waver.  Snowball is
probably the most vocal in promulgating this school of thought.  This is best seen when
he tells Mollie that "ribbons and sugar" will not be needed and calls her "Comrade." 
The embrace of Animalism from Old Major's teachings becomes one of the fundamental
turning points in the novel, as it sets the stage for what will happen when the animals
do gain control of the farm and make it "Animal Farm."