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MASS. EXPERIMENT STATION BULLETIN 2.59 



Table 1. — Normal Weight of Chicks. 



Upp (1928) found the average weight of 1858 Rhode Island Red chicks 

 at hatching to be 37.70 grams. These figures agree substantially with those 

 reported in Table 1. 



From available data, the normal weight of Rhode Island Red chicks at 

 {hatching lies between 34 and 38 grams, and sex differences in weight are of 

 little significance wiien the chicks are hatched. 



Weight at Two Weeks of Age 



Available records of weight at two weeks of age cover a six-year period 

 from 1923 to 1928. There is no significant evidence of progressive changes in 

 mean weight at this age observable in Table 1. The 410 males averaged 89.6 

 grams; the 447 females, 86.3 grams. The males therefore showed a mean 

 ■weight 3.82 per cent greater than that of the females. 



