History: Concept: Poultry barn propane load profile

Confidence: Estimated. Canadian primary source for annual house-level consumption does not exist at this granularity — Teagasc Ireland and Mississippi State Extension are flagged as international sources.

Operational reference for propane consumption in Ontario broiler, layer, and turkey barns. Brooding is the most propane-intensive event on any Southwestern Ontario livestock operation.

The structural fact: brooding-week burn

~50% of cycle fuel is consumed in the first week when chick brooding temperatures are highest (Mississippi State Extension, Modern Broiler House Heating Systems).

🇺🇸 Mississippi State Extension (flagged: US source — used because no published Canadian equivalent at this granularity): "a single broiler house can use 3,000 to 5,000 gallons of propane in a year" — 11,400–19,000 L per house per year — with "over 50 percent of the fuel consumed is during the first week alone when the highest temperatures are required."

🇮🇪 Teagasc Ireland (flagged: international source, climatically and operationally closer to SW Ontario): "a standard 73m × 18m 27,000-bird broiler house (without renewable energy installed) on average consumes 240–270 megawatt hours (MWh) of heat energy/year. That's the same as 36,000–40,000 litres of liquefied petroleum gas (LPG)."

Combustion arithmetic that drives ventilation engineering

Per US gallon of propane burned (Mississippi State Extension): 850 ft³/hr fresh air consumed; 92,000 BTU heat; 108 ft³ CO₂; 6.8 lbs (0.8 gal) water produced. A Wellington County broiler barn burning 300 USG in the first chick days adds ≈240 gallons of water vapour to the brood chamber — driving the ventilation rate that drives more propane consumption. This is the central economic problem of broiler heating.

Annual consumption and tank sizing

Operation	Annual propane (L)	Tank sizing typical
Single 25,000-bird broiler barn	25,000–40,000	1,000–2,000 USWG
Two-barn broiler / 50,000 birds	50,000–80,000	4,000–10,000 USWG
Three- to four-barn complex	100,000–250,000+	10,000–30,000 USWG, multi-tank manifolded
Multi-barn turkey	80,000–250,000+	10,000–30,000 USWG
Large layer with pullet brooding	15,000–60,000	2,000–10,000 USWG

Above ~9,300 L on-site, ECCC's E2 plan threshold is engaged — see reg-eccc-e2-plan-propane-threshold.

Brooding temperatures (NFACC 2016 Poultry Code)

Broiler chickens days 1–7: 30–34°C (86–93°F) at bird level.
Lower by 2–3°C each subsequent week.
Turkeys days 1–7: 32–35°C (90–95°F) — about 2°C warmer than broilers.

NFACC's Requirement is observational: "Bird behaviour must be observed and necessary corrective action taken as soon as possible if birds are displaying signs of thermal discomfort." Detail in reg-nfacc-2016-poultry-code-brooding-temperature.

Layers and turkeys (sector notes)

Layer barns: continuous lower-grade load — building tempering, freeze protection on water lines, occasional brooding when pullets are housed. Single-house annual: 4,000–15,000 L/yr. Estimated.
Turkey barns: brooding 32–35°C at poult level for the first week drives 10–15% higher per-bird fuel use in the first 7 days versus broilers. Larger barn footprints (often 30,000–50,000 sq ft) and 11–17-week grow cycles. Multi-barn turkey operations commonly burn over 100,000 L/yr in aggregate; the largest exceed 250,000 L/yr. Estimated, consistent with Teagasc per-bird benchmarks scaled to Ontario house sizes.

Named SW Ontario operator references (publicly profiled on heating systems)

Brett Shantz / Rickeen Farms — Wallenstein, Wellington County. $1.1M, 72-ft × 250-ft, 20,000-bird broiler barn (dairy diversification). Heating: Superior radiant ALTX even-heat tube heaters with SKOV ventilation. Quote: "Our passion is in the dairy industry, but we just can't grow that the way we want to right now. So, we're diversifying." (Farmtario, "Succession plan drives dairy farm's journey into poultry".)
Brent and Catherine Pryce — Walton, Huron County. 20,000-bird, 14,000-unit quota broiler operation built around a cross-ventilation barn design (a North American first), heated by a Mabre tube system. Quote: "So far, I'm really happy with the heat unit and the environment in there is great… The carbon dioxide and humidity levels are bang on." (Canadian Poultry Magazine.)
Tony, Wilma, Kyle Cornelissen — Watford, Lambton County (adjacent to Middlesex). Hydronic in-floor heating. Quote (Treena Hein, Canadian Poultry Magazine): "Last winter we kept track of what it cost us in propane compared to other barns, and we were half the cost… Last year, they paid $0.02/kilo of bird weight, on average." Each 32,000 sq ft barn uses five hanging hydronic heaters and 1.15 million BTU; in-floor capex ~$70,000 per barn. Kyle Cornelissen: "You're not adding any more moisture or CO2. In return, our humidity levels are lower, and we don't have to exhaust as much air to keep the CO2 down."

See reference-named-sw-ontario-livestock-operators-2026 for the consolidated operator reference list.

Sources

🇺🇸 Mississippi State University Extension Service, Modern Broiler House Heating Systems; Managing Heat and Minimum Ventilation Systems in the Broiler House. 🇮🇪 Teagasc, Energy Efficiency in Poultry Units. NFACC 2016 Code of Practice for the Care and Handling of Hatching Eggs, Breeders, Chickens and Turkeys. Farmtario; Canadian Poultry Magazine.