Feeding in progress Sorted eggs Layers The aim of egg producer is to meet the needs of the customer or consumer in terms of the quality,quantity and size of egg. With the right feed and proper management , all hens start egg production laying Pee Wee or Small eggs and gradually increase to a mature egg grade size of Medium, Large or bigger. In modern breeds, most hens are laying Large, Extra Large or Jumbo eggs by 40 weeks of age. The three pillars of egg size; 1. Bodyweight 2. Nutrition 3. Light While you cannot alter the basic pattern of how egg size changes as hens age, the feeding and management of your hens can have a measurable impact on egg size. The way that you treat your hens will determine how quickly they will start to lay Large, Extra Large or Jumbo eggs. Many consumers remain willing to pay more for large eggs. But, large eggs require an extra cost to be produced, a cost that is mostly associated with increased nutrient intake.