BULLETIN 48, HAWAII AGRICULTURAL EXPERIMENT STATION. 
Fig. 3. — Cement pens and iron fenced runs. University of Hawaii farm. 
portable cot is 6 by 7 feet, and 1 foot of the longer dimension is 
occupied by a self-feeder. (Fig. 7.) These cots have served their 
purpose well for hogs weighing up to 500 pounds. Every farrowing 
pen should be provided with fenders, set along the sides about 10 
inches above the bed. to prevent the dams from lying against the 
partition or upon their young. The pigs will creep under the 
fender when the mother lies down. 
Outdoor pens should be of such size as to permit of the hogs 
getting plenty of exercise. If it is to be attached to a large central 
house, the outside run will necessarily have to be of the same width 
as that of the inside pen unless the interior is so arranged that the 
animals can be let out on either side. If the alternating pens have 
Fig. 4. — Brood sow and pigs in onp of the pens shown in Figure 3. Pens are mostly 
sanitary aiid strong, but hard on the animals' feet. 
