242 SWINE 



rays of the sun fall upon the floor of the pens occupied by 

 the pigs; it should be constructed to be shady and cool 

 during the heat of summer; it should protect the pigs 

 from cold winds and drafts during the winter, and at the 

 same time afford a moderate degree of warmth; and it 

 should be located so that the pigs may have access to 

 pasture which not only supplies considerable food and 

 also mineral substances for the development of bone, but 

 also gives an opportunity for exercise which exerts a 

 profound influence upon the metabolism of the animal. 



Any kind of a house that will supply these fundamental 

 conditions and at the same time satisfy the convenience 

 of the feeder or breeder is best adapted to his needs. 

 Hog houses in general are of two types: large houses or 

 those accommodating a considerable number of hogs, and 

 individual houses or cots which, as in the case of the in- 

 dividual pens of large houses, accommodate one sow and 

 her litter. 



THE LARGE HOG HOUSE. 



The building shown in the cut (28) is presented as an 

 example of a hog house of this type. This building was 

 designed by the writer and first built, by the Illinois Ex- 

 periment Station upon its farm, where it is now in use. 

 Since that time it has been copied by a considerable num- 

 ber of farmers, breeders and experiment stations through- 

 out the country. This house was constructed to afford as 

 nearly as possible all the conditions that are considered 

 necessary in a building of this nature. 



Serviceableness. — This house is constructed with pens 

 arranged on each side of a wide alley, which will permit 

 the passage of a wagon, and adjoining the feed room, 

 scale, etc., so that the attendant can care for the largest 



