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Housing for poultry and swine is constantly improving. These improvements in environmental control occur due to changes in animal housing style, availability of new ventilation equipment, and concerns with biosecurity for the animals.

1. Environmental Control for Swine Facilities: Improved Biosecurity and Production< /br>Brett Ramirez, Ph.D., Member, Iowa State University, Ames, IA
2. New and Recent Trends in Ventilation and Environment Control in Poultry Production Facilities< /br>Richard Gates, Iowa State University, Ames, IA