i86 



Bulletin 246. 



first advocated and tried the plan of placing the burner box under the 

 house which did away with the extra raised floor then used under the 

 hover and the steep incline made necessary when the burner box was 

 placed above the main floor. 



The "A" type house with low sides as here shown was originated in 

 its entirety in the Poultry Department at this college, but we have re- 

 cently learned that C. E. L. Hayward of Hancock, N. H., has been using 

 for nearly 30 years an "A" house for egg production, quite similar in type. 



II. The Principles of Brooding. 



Many factors enter into the construction of a perfect brooding sys- 

 tem. Of the many brooding devices now in use, including the one here 



presented, not 

 one can claim 

 A >- ' IJL^JSlHi perfection or a 



monopoly of all 

 the desirable 

 features. Each 

 system has its 

 advantages and 

 i t s disadvan- 

 tages. There are 

 at least 18 im- 

 portant features 

 which should be 

 found in a suc- 

 cessful system 

 of brooding. 

 The extent to 

 which they are 

 furnished in the 



Gasoline-Heated Colony Brooder-House, as designed and used by the 

 New York State College of Agriculture, and the principles involved, will 

 be discussed under separate headings as follows : 



I. A temperature of 100 degrees at all times accessible to the chickens. 



A temperature of 100 degrees is essential to successful brooding of 

 chickens in either large or small flocks. The larger the flock the more 

 important it is that a high temperature be maintained, because the greater 

 is the danger of crowding. When the chickens become cold they like to 

 go quickly to a warmer temperature than they could occupy with comfort 

 or safety if compelled to remain there. Chickens will crowd when they 

 become cold if sufficient heat is not supplied. It is but natural that they 



' ^^^ 



Fig. 65. — One of the latest models. 



