196 



HOUSING 



LABORATORY EXERCISES 



EXERCISE No. 49. Amount and Value of Poultry Manure. 

 Secure the co-operation of at least three or four members of 

 the class by getting them to keep an exact record, for about 

 one month, of the time it takes them to clean off the dropping 

 boards. Also the amount of absorbent used, and the amount 

 of droppings produced from a given number of birds. From 





FIG. 111. A commercial poultry house in excellent condition for the layers. The 

 litter on the floor is about fifteen inches deep. 



their figures the class can determine the amount and value of 

 droppings produced per one hundred birds for a given period. 

 EXERCISE No. 50. Perch Room. Get as many members 

 of the class as possible to measure for a number of consecu- 

 tive nights the amount of perch room occupied by a given 

 number of birds. The figures obtained can be presented to 

 the class. Differences between breeds and at different seasons 

 will be noted. The causes may be explained by the class. 



