94 PROFITABLE POULTRY PRODUCTION 



forced on rich food with lack of exercise, but a 

 rapid development is highly desirable. Excessive 

 coarse feed which is slow to assimilate is likely to 

 retard and stunt growth. 



VALUE OF VIGOROUS PARENTS 



To maintain or increase the physical vigor of a 

 flock none but the most vigorous parents should 

 be used as breeders. The chicks of inferior consti- 



ROBUST AND INFERIOR TYPES OF FOWLS 



tution should be removed. Chicks conspicuously 

 weak upon hatching should be destroyed at once, 

 or should be marked in such a way that there will 

 be no risk of their being selected should they seem 

 to overcome their physical weaknesses. They should 

 go to market at the earliest opportunity ; for though 



