Things were supposed to get better for the animals of Manor Farm once they got rid of their human owner, but it didn't really work out that way. The animals did eliminate the human domination over their lives, but that was about the only positive change. The animals worked harder and longer hours, and the daily food supply grew smaller and smaller. The pigs basically took the place of Mr. Jones, living in his house, enjoying its comforts, and drinking his liquor. The pigs also ate the best food available and did little or no work. Animals were eventually killed by order of the pigs--a far worse fate than the occasional mistreatment by their former human master.
AFTER THE REVOLUTION
As it was stated in the book by squealer, there were a couple of “readjustments” in their food portions Squealer always spoke of it as a "readjustment," never as a "reduction", and he always compaired with the days of Jones. Reading out the figures he proved to the other animals that they had more oats, more hay, more turnips then they had had in Jones's day, that they worked shorter hours, that their drinking water was of better quality, that they lived longer, that a larger proportion of their young ones survived infancy, and that they had more straw in their stalls and suffered less from fleas. The animals believed every word of it. The reason for this being that they had forgotten what it was like in the Jones´s days. They had forgotten their how much food they received, how many hours they worked and if their young survived or not. Squealer put false memories into their heads and as the animals weren´t clever enough to realise that it was all a lie. Which caused them to accepted whatever Squealer told them as they didn't know any better. Hence “Knowledge is power”- Sir Frances Bacon.