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For many people, the ideal laying hen would lay Grade A Large sized eggs from the first day to last day of her production cycle. A Large egg gives you a bigger breakfast than a Medium egg but is less expensive to produce or likely to crack compared to an Extra Large or Jumbo egg. No laying hen, however, can meet the ideal standard of laying a Large egg everyday.
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.
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.
Important management factors in controlling egg size are:
These factors have a strong influence on how soon the hens start to lay Large instead of Medium eggs and how many hens will lay Extra Large or Jumbo eggs.