130 



HATCHING AND REARING 



kept at about 104 degrees Fahrenheit. Sprinkling the eggs 

 will cause a high humidity. If the incubator has a glass 

 door, darken it with a piece of burlap or dark cloth to keep 

 the chicks quiet. This will prevent them from trampling 

 on each other in an effort to get to the light. When the hatch 

 is about over, the trays should be removed, the burlap frame 

 inserted, and the chicks allowed to drop into the nursery. 



INCUBATOR RECORD 



Incubator number Make Capacity 



Date eggs set Number of eggs set 



Kind of eggs set 



TEMPERATURE RECORD 



Day 1 2 3 4 5 6 7 8 9 10 U 12 13 14 15 16 17 18 19 20 21 22 23 



Temperature : 



A. M 



p. M 



i 



Infertile Eggs j Dead Germs Cracked 



Result of tests : 

 Seventh day . . . 

 Fourteenth day 



Number of vigorous chicks hatched 



Number of chicks dead in shell 



Per cent hatch of total eggs set 



Per cent hatch of fertile eggs after the first test . 

 Remarks about the hatch 



Steps To Be Avoided in Artificial Hatching. Poor hatches 

 often result from the following causes, which the pupil must 

 make every effort to prevent: If the thermometer does not 

 register properly, it will mislead the operator into running 

 the hatch at either too low or too high a temperature, there- 

 fore, all the thermometers should be tested in warm water, 

 and compared with a thermometer known to register accu- 



