Validation and fine-tuning of a predictive model for air quality in livestock buildings

Banhazi, T. M. and Rutley, D. L. and Pitchford, W. S. (2010) Validation and fine-tuning of a predictive model for air quality in livestock buildings. Biosystems Engineering, 105 (3). pp. 395-401. ISSN 1537-5110


Between 1997 and 1999 a comprehensive survey of airborne pollutant concentrations within, and emissions from, 160 Australian piggery buildings was undertaken. The primary
aim of the study was to model the concentrations and emissions of different airborne pollutants and thus identify potential reduction techniques. The main factors identified as significantly influencing airborne pollutant concentrations were building type, pen hygiene, pig flow management, seasons, building volume, ventilation airflow rate, air temperature, relative humidity, and farm size (as expressed by number of sows on site).
These effects were included in comprehensive statistical models to explain the variation in measured concentrations and emission rates. The models developed were validated and
fine-tuned using the ‘‘leave-one-out’’ cross-validation technique. This article details the validation technique used that was aimed to maximise the value of available experimental data and further improves the practicality of the models developed. The main result of the study was the development of an improved model. The study results, and the resulting prediction models, should help improve air quality in piggery buildings by providing decision makers with an awareness of the environmental conditions inside and outside of piggery buildings. In turn, that should lead to improvements in the health and welfare of pigs and piggery staff and the sustainability of the piggery operations.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author version not held. Published version cannot be displayed.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 22 Sep 2010 02:29
Last Modified: 25 Aug 2014 03:24
Uncontrolled Keywords: predictive model; air quality ; piggery ; livestock building
Fields of Research : 07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070205 Animal Protection (Pests and Pathogens)
07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070203 Animal Management
05 Environmental Sciences > 0502 Environmental Science and Management > 050299 Environmental Science and Management not elsewhere classified
Socio-Economic Objective: D Environment > 96 Environment > 9601 Air Quality > 960103 Farmland, Arable Cropland and Permanent Cropland Air Quality
Identification Number or DOI: 10.1016/j.biosystemseng.2009.12.011

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