Rhodes Research and Demonstration Farm
The objectives of the study were to document the performance of barrows and gilts fed in hoops during the summer and winter, and to evaluate barrow and gilt performance in hoops compared with barrows and gilts in a confinement housing system.
Iowa State University
Honeyman, Mark S. and Penner, A. D., "Performance of Barrows and Gilts in Hoop Structures and Confinement during Winter and Summer" (2001). Iowa State Research Farm Progress Reports. 1821.