CHAPTER XVIII 



PIGGERIES 



Piggeries may be arranged according to either of two systems : 

 (a) the centralised system, 

 (&) the colony system. 



Centralised or Large House System 



In this system the pigs are housed compactly in a series of pens 

 under one roof, an open-air run being attached to each pen. The pens 

 are generally arranged in one or two rows, with a feed passage (see 

 Figs. 155a and 156a respectively). 



This system is very convenient, and makes the work of attendance, 

 feeding, and cleaning very light : on the other hand, the cost of 

 erecting such a piggery, of a substantial nature, is comparatively 

 high. 



The frame-work for a piggery of wood and corrugated iron, built 

 as a lean-to to another building, is illustrated by Fig. 88, and has 

 already been described in Chapter IX. 



Requirements for a Good Piggery 



The principal requirements to be kept in view when designing a 

 piggery are : — Light, ventilation, dry floors, cleanliness, and avoidance of 

 extremes of temperature. The covered pens, food preparation room, and 

 passage should preferably be all under one roof, in order to economise 

 labour. 



Light. — Animals thrive all the better when they have plenty of sunlight. 

 Good lighting is desirable, even though it be only to show up dirt more 

 clearly. In designs 1 and 2 (vide Figs. 155a, b, and 156a, b), the general 

 lighting of the pens and passages will be good without windows, but the 







