ARTIFICIAL INCUBATING AND BROODING 



impracticable this is. The hillside brooder house, 

 however, permits the chicks to step right out at 

 the ground level, there being no bridges to climb. 

 It is evident that a slight slope to the north is 

 the best location for a house of this kind, if it is 

 desired to have the house face the south. How- 

 ever, either an east or west slope can be utiUzed 

 if a small amount of grading is done. It is im- 

 perative that the site be well drained, otherwise 

 water will collect in the depressed alleyway. It 

 might be possible to erect a building of this kind 

 upon perfectly level ground by digging a trench 

 of sufficient size to serve as the alleyway if 

 ample drainage could be provided by laying a line 

 of tile to some lower point. Of course, under 

 these conditions, steps would have to be used 

 which would not be as convenient as having an 

 entrance upon the level as in the building de- 

 scribed above. 



Since this bulletin has appeared I have re- 

 ceived several letters containing questions about 

 ■the house, and I will mention one or two matters 

 not fully touched upon in the bulletin. Kindly 

 refer to the illustration "Section showing south 

 side of alleyway." The lamp boxes suspended in 

 lamp pit (c) occupy but a part of it, allowing 

 ample circulation of air around the boxes. Lamp 

 fumes are permitted to escape into the alley through 

 the openings in the corners of the lamp boxes; one of these 

 can be seen at the upper right hand corner of the box (b). 

 The "clean out" doors (a) are directly behind the hover and are 

 hinged at the bottom. These drop down and permit the attend- 

 ant to clean the brooder very conveniently. The wire netting 

 above these "clean out" doors is securely tacked in place. As 

 each pen is 5 feet in width and the brooder itself a scanty 3 feet, 

 there is sufficient room for the 2-foot front door shown on the 



26— PLAN OF BROODER HOUSE 



left. This door should be swung outward, being hinged on the 

 side next the brooder. Thus each door can be thrown wide 

 open, swinging around against the brooder, without interfering 

 with the other doors. 



The lamp fumes and vitiated air naturally rise to the ceil- 

 ing and are permitted to escape through the slide covered ven- 

 tilator which is above the partition between the two pens. A 

 similar ventilator is placed above each pair of brooders. 



THE HEATING OF BROODING HOUSES 



THE MOST SUCCESSFUL DESIGNS OF UNDERNEATH AND OVERHEAD HEATING 

 SYSTEMS FOR BROODING HOUSES— THE ADVANTAGES OF EACH AND A COMPARI- 

 SON OF THEIR MERITS— SUMMARY OF MATERIAL REQUIRED FOR 100-FOOT HOUSE 



THE UNDERNEATH SYSTEM 



'HE brooding house illustrated in the accompany- 

 ii^ plan is 140 feet long and 13 feet wide and is 

 separated into two parts, 36 feet and 104 feet 

 ri^gfigj^ig^^ The shorter end has twelve pens 

 off 3 feet each in width and 10 feet in length in- 

 cpding the hover, and the longer end has 



t SB Bv-four pens 4 by 10 feet in size. The 



furnace pit and a narrow walk separate the 

 two lots of pens and an aisle 3 feet in width extends the entire 

 length of the house back of the hovers. 



The system of piping is under the hover floor in a trench 

 (N, 111. 28). The shorter end has a 2-inch flow and return pipe. 

 The long end has two flow and two return IJ-inoh pif)es (see 

 111. 29), and both sides are controlled by valves near the 

 heater, whereby all, or a part of the flow may be shut off from 

 the pipes. The trench is made by excavating to a, depth of 6 

 inches and 36 inches wide. The sides are 2 by 6 inch spruce 

 plank, set on edge (00). The bottom of the trench is cemented 

 (H). The top is boarded with a course of rough 1-inch boards, 

 and covered with a layer of matched spruce flooring seven- 

 eights inch (K). This double boarding takes away any danger 



from too much bottom heat. The boarding comes flush with 

 the edges of the 2 by 6 inch and the frame work of the hovers, 

 is secured by 1 by 3 inch posts nailed to the outer sides of the 

 2 by 6, wliich are only as high as the hover divisions (C), which 

 in the small pens are 10 inches and in the large pens 12 inches. 



27— SECTIONAL VIEW BROODING HOUSE (UNDERNEATH HEATING SYSTEM) 

 34 



