Answer:
As the story progresses, Napoleon once again demonstrates his control over the food supply by withholding the hens' food rations when they refuse to donate their eggs. During their protest, nine hens starve to death before the remaining hens capitulate. Conditions on the farm continue to worsen under Napoleon's leadership, and he constantly reduces the animals' food rations whenever he pleases. Squealer cleverly refers to these reductions as "readjustments" and announces dramatically inflated statistics regarding the farm's food supply, which are misleading and irrelevant. Napoleon even has barrels filled with sand and places grain on the top to deceive Whymper and make it seem like the farm is thriving. Overall, Napoleon controls the food supply by creating a system of rations, which he uses to exploit the animals' labor. By controlling the food supply, the animals have no leverage over the pigs and are forced to work long hours to earn their meals.