It should be kept warm and dry. Older animals also are affected by temperatures above 80 degrees F. Hogs have few sweat glands and need some way to cool off. They do this, if they can, in a wallow or mud-hole. A well-designed hog pen should have provisions for such a wallow. At a minimum, the area should be at least 5 X 15 feet with shelter and feed at on end and water and dunging area at the other.
Small pigs escape through small holes and once they know it is possible to get out they keep trying.
A board or woven wire fence works best for small pigs. Larger pigs can be easily contained by a single strand of electric fence placed 8 to 10 inches off the ground. Train them to the electric fence first in a secure enclosure, otherwise, they are likely to go through the fence the first time they encounter it. E. Miscellaneous considerations 1. Vaccinate for erysipelas if the producer has not already vaccinated.