POULTRY LABORATORY GUIDE 67 



ally from eighteen to twenty-one days. Weigh 

 the birds each day, noting the gain in weight. 

 If fed properly, the greatest gain will occur during 

 the second week. 



Figure the profit from cramming, taking into 

 consideration the gain in weight, amount and 

 value of food consumed, also value before and 

 after feeding, and extra labor required. 



EXERCISE XX 

 Caponizing 

 Select some young cockerels four months old, 

 shut them up, and withhold all food for from 

 twenty-four to thirty-six hours before operating. 

 Secure a narrow table, box, or barrel about three 

 feet high and one which is light, so that it can be 

 easily moved about. Before attempting the op- 

 eration, study the instruments carefully, learning 

 the name of each of the following and how it is 

 handled. 



Hooks and cord. 



Caponizing knife. 



Spreader. 



Caponizing hook. 



Probe and spatula. 



Cannula and wire or patent scoop. 



Spoon forceps. 



Tweezers. 



