POULTRY HOUSE EQUIPMENT 531 



hatch may be known, such as name of incubator, location of 

 setting hen, etc. 



The "per cent, infertile" is calculated by dividing 100 times 

 the number of infertile eggs by the number of eggs set. 

 Similarly the "per cent, hatched of total eggs" is calculated by 

 dividing 100 times the number of chicks hatched by the 

 number of eggs set. 



The mark X means that no entry is to be made in that 

 particular space. 



Brooder Record; Page 5. — The column headed "identifica- 

 tion" is to be used in the same way as that in the incubation 

 record. 



When the various hatches are kept separate, the mortality of 

 each flock may be kept on sheets of paper fastened in the 

 brooders, colony houses, or coops, and recorded monthly in 

 this book until the pullets are placed in the laying house. 



When cockerels are removed they are to be recorded in the 

 "sold, eaten, or removed" column whether they are sold or 

 simply placed in another part of the farm. If they are sold 

 or eaten they are to be recorded in the ' ' credits ' ' (pages 10-13) ; 

 if they are held for breeders or for sale as breeders, they will be 

 recorded on the flock record sheet when counted each month 

 (pages 3-4). No further mortality record is kept for the 

 cockerels after their removal from the pullets except as may 

 be noted in the monthly counts and inventories. 



Material Inventory; Page 7. — ^This inventory should be 

 taken at the beginning and end of the record period. 



If real estate, portable buildings, etc. are used jointly by 

 the poultry and other farm enterprises, the porportional part 

 used by the poultry should be estimated, and included in the 

 inventory. 



Any increase or decrease in the inventory during the record 

 period will appear as a profit or loss respectively, at the 

 bottom of the sheet, so be sure that any difference between the 

 two inventories is accounted for by a purchase or sale recorded 

 with the debits or credits respectively, or by an actual increase 

 or decrease in value due to other causes than change in general 

 property values. 



