Egg Weight in Relation to Production

The observation has been made by a number of investigators that the size of egg laid by a pullet during her first year of production is affected by a variety of factors. Atwood (1914) has shown that egg weight varies from month to month, reaching the maximum in the early spring. He has also shown that egg weight is decreased when fowls are fed a ration in which the nutritive constituents are not present in proper proportions and when fowls are fed scantily. Curtis (1914) observed that egg weight continues to increase with the increased maturity of the bird at least up to the end of the second laying year. Benjamin (1920) has shown that during the pullet year egg weight increases rapidly, but that thereafter there is no appreciable increase in weight. Hadley (1919) has reported that the percentage increase in egg weight from the commencement of laying to . . .