BODY WEIGHT AND EGG PRODUCTION 



Table 2. — Mean Monthly Body Weight and Egg Weight 



Monthly Body Weight 



Monthly Egg Weight 



October . . . 

 November 

 December . 

 January. . . 

 February . 

 March . . . . 



April 



May 



June 



July 



August 



September 



The data in Table 2 and Chart 2 show rather remarkable parallelism between 

 mean monthly body weight and mean monthly egg weight up to March 1. Max- 

 imum body weight appeared in this group of birds about April 1, and maximum 

 egg weight appeared about February 1 when the birds laid eggs weighing 60.6 

 grams or 25.7 ounces to the dozen. The summer decline in body weight began 

 with May and a decline in egg weight began with April. Body weight declined 

 until August and egg weight declined until July. These data indicate considerable 

 parallelism between body weight and egg weight throughout the pullet year. 



CHART 2 



MEAN MONTHLY BOOr WEIGHT 



AND MEAN MONTHLY EGG WEIGHT 



267 BIRDS 



^6.00 



54 S 



4.S0 S2 



OCT NOV. DEC. JAN FEB. MAR. APR. MAY JUNE JULY AUG. SEPT. 



MONTHS 



3. Increase or Decrease in Body Weight during the Laying Year, and Winter 

 Egg Weight 



In Table 3, 1309 birds with complete annual records were grouped into three 

 general classes with respect to body weight differences that occurred between the 

 weights taken when the birds were housed at about 170 days of age and the 



