Egg Weight in Relation to Production

Abstract

The possibility of the existence of a change in egg weight as production increases makes necessary a thorough study of the problem, in order to determine, first, the nature of the change in egg weight, and second, the causes affecting the relationship of egg weight to egg production. The ordinary method of measuring egg production in the domestic fowl is in terms of the number of eggs produced per bird in a given unit of time, arbitrarily established for pullets as one year from the date the first egg is laid. A few observations have been made concerning the relationship of egg weight to production, but, so far as the writer is aware, no definite conclusions have been drawn concerning the causes of changes in weight per egg as production increases. The objects of this study are, therefore, first, to determine the extent to which the parts of the egg, . . .