Armstrong Research and Demonstration Farm
One alternative farrowing system that was evaluated earlier was the Swedish deep-bedded system using free-stall farrowing boxes and group lactation. The system was demonstrated at the ISU Armstrong Research Farm in southwest Iowa for 2 1/2 years. This system worked well with one exception—a high prewean mortality of 28%, primarily during the first several days after birth, when it was 80%. The purpose of this demonstration was to evaluate combining crated farrowing with bedded group lactation in an effort to reduce prewean mortality.
Iowa State University
Honeyman, Mark S. and Breach, Dave, "Combining Crated Farrowing with Bedded Group Lactation" (2006). Iowa State Research Farm Progress Reports. 1014.