Hog producers in Iowa have used the one-litter and two-litter systems for years. Producers now are successfully using four-, five- and six-litter systems. Which of these will work best for you? How can you decide? This article, coupled with your own experience, can help you.
Krause, Kenneth and Beneke, Raymond R.
"What Hog System for You?,"
Iowa Farm Science: Vol. 14
, Article 5.
Available at: https://lib.dr.iastate.edu/farmscience/vol14/iss5/5