Research in Support of the Manitoba Clean Environment Commission’s Hog Production Industry Review

The report evaluates the environmental sustainability of the hog industry in Manitoba, specifically focusing on nutrient loading in watersheds. It identifies a conflict between the Planning Act and the Conservation Districts Act, arguing that current Technical Review Committee (TRC) processes for hog barn approvals lack sufficient scientific data on cumulative phosphorus loading. The authors recommend transitioning Conservation Districts into watershed-based 'Watershed Authorities' with the power to coordinate TRC processes and manage land-use zoning to better protect water quality, particularly for Lake Winnipeg.

• The report identifies a 'Planning – Conservation Conflict' where the Planning Act and Planning Districts supersede the powers of the Conservation Districts Act, hindering the implementation of Integrated Water Resources Management (IWRM).
• The current Technical Review Committee (TRC) process for approving hog operations is criticized for providing insufficient detailed information to Rural Municipalities, often relying on 'boiler plate' data rather than site-specific watershed analysis.
• There is a significant data gap regarding nutrient loading, with some participants suggesting that current estimates for Manitoba watersheds could be inaccurate by as much as 40%.
• The report argues that the 300 animal unit (AU) threshold for requiring manure management plans and TRC reviews should be eliminated to prevent producers from circumventing regulations by building multiple smaller barns.
• Phosphorus is identified as a more critical concern than nitrogen because manure contains a higher ratio of phosphorus than crops require, leading to oversupply and increased watershed loading.
• The authors recommend reconstituting Conservation Districts as 'Watershed Authorities' aligned with natural watershed boundaries rather than municipal boundaries to effectively manage nutrient budgets and land use.
• The report suggests that Manitoba should adopt a 'State of the Watershed Reporting System' similar to Saskatchewan's, using condition, stressor, and response indicators to track watershed health.

APA

Oborne, B., Venema, H. D., & Tyrchniewicz, A. (2007). Research in Support of the Manitoba Clean Environment Commission’s Hog Production Industry Review. International Institute for Sustainable Development. https://www.iisd.org/system/files/publications/cec_phase2.pdf

Chicago

Oborne, Bryan, Henry David Venema, and Allen Tyrchniewicz. Research in Support of the Manitoba Clean Environment Commission’s Hog Production Industry Review. International Institute for Sustainable Development, 2007. https://www.iisd.org/system/files/publications/cec_phase2.pdf.

Wikipedia

{{cite report |last1=Oborne |first1=Bryan |last2=Venema |first2=Henry David |last3=Tyrchniewicz |first3=Allen |title=Research in Support of the Manitoba Clean Environment Commission’s Hog Production Industry Review |publisher=International Institute for Sustainable Development |date=November 2007 |url=https://www.iisd.org/system/files/publications/cec_phase2.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{oborne2007research, author = {Oborne, Bryan and Venema, Henry David and Tyrchniewicz, Allen}, title = {{Research in Support of the Manitoba Clean Environment Commission’s Hog Production Industry Review}}, institution = {International Institute for Sustainable Development}, year = {2007}, month = nov, url = {https://www.iisd.org/system/files/publications/cec_phase2.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }