Document Type

Conference Proceeding


Livestock Environment VII

Publication Date



Beijing, China


Moisture Production rate (MP) from animals and their housing components provide fundamental data for the engineering design of a building environmental control system. MP of a commercial laying hen house with manure belt and tunnel ventilation was measured for a one-year period. The MP values included both latent heat loss of the birds and evaporation of moisture from the feces on manure belt. During the one-year measurement period, MP varied from 1.57 to 11.74 g H2O h -1 kg -1 with housing temperature ranging from 18 to 32 o C. Regression equations were established to predict MP of the commercial layer house over common ranges of outside temperature (-17 to 29 o C), RH (30% to 98%), inside temperature (18-32 o C), age condition (20- 42 wk and 97-119 wk) and lighting condition (light or dark). Results from this study provide new data for updated standards to be used in design and operation of laying hen houses.


This proceeding is from Proceedings of the Seventh International Symposium, 18-20 May 2005 (Beijing, China) Publication Date 18 May 2005, ASAE Publication Number 701P0205. Ed. T. Brown-Brandl.

Copyright Owner

American Society of Agricultural Engineers




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