64 POULTRY LABORATORY GUIDE 



This mixture may be fed dry in the feeding 

 trough, or it may be mixed with skim milk. 

 When once mixed with skim milk, do not keep it 

 over from one feeding to another. Why? 



Weigh the birds daily, recording the variation 

 in weight. Determine the time of maximum 

 gain and the time when the birds should be 

 slaughtered for the best results. The time 

 usually required to satisfactorily fatten is from 

 two hundred and fifty to three hundred and 

 twenty-five hours. Figure the profit, keeping 

 in mind the following points : — 



Weight before feeding. 



Selling price per pound before feeding. 



Total value before feeding. 



Gain in weight before feeding. 



Cost of food consumed. 



Cost of producing a pound of flesh during 

 feeding. 



Weight after feeding. 



Selling price per pound after feeding. 



Total value after feeding. 



Profit from feeding. 

 If time permits, carry a number of different 

 lots through the crate, using different rations 

 and determining the relative merits of each. 



Always bear in mind the fact that animals 

 fatten better at rest, since the economy of food 



