Sept., 1941] 



PROTEIN REQUIREMENTS OF CHICKENS 



13 



TABLE 7. SUMMARY OF HATCHABILITY RECORDS— ALL GROUPS 



Group 



No. Eggs 



Set 



Per cent 

 Fertile 



No. 

 Chicks 



Total 



Eggs 



% Hatch 



Fertile 



Eggs 



% Hatch 



Total-Average 



712 



88.7 



538 



75.5 



85.1 



TABLE 8. OBSERVATIONS OF GIZZARD LESION SEVERITY IN PROGENY OF 



SPECIFIED PROTEIN FED GROUPS 



Per cent of total observations 



Protein 



Normal 



Total 



