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Ventilation Rates

Powered Ventilation Rates for Livestock & Poultry


Type of Livestock

Min Temp. °C/°F

Type of Housing
Min. Winter Rate CFM Per Unit Max. Summer Rate CFM Per Unit
  • 1. This ventilation rate is considerable greater than that requited to control humidity. It may have to be further increased if it does not give at least four room air changes per hour.

  • 2. 20.3 applies where manure is removed weekly. With deep pit manure storage, increase to 0.5 and increase supplemental heating accordingly.

  • 3. Start day-old chicks, pullets and weaning pigs at the first temperature and gradually decrease temperature as they grow.

  • 4. 18°C / 65°F ISA comfortable room temperature for the sow, but newborn piglets need 29°-80°C / 84°-86°F min. Provide a heated creep and gradually decrease creep temperature to 24°C / 75°F as piglets grow.

  • 5. Not over one air change per minute for sensitive stock.
Dairy Cattle

1000 lb Cow




1000 lb Cow




1000 lb Cow


3 °C / 36 °F




3 °C / 36 °F




3 °C / 36 °F
5 °C / 41 °F


Conventional fall to spring stabling. Ventilation by windows or doors during summer. Walls insulated less than R 5


Year-round housing. Windowless or non opening windows. Walls & ceilings insulated to at least R10


Milking parlor
Milk Room


21 / Animal




25 / Animal




25 / Stall
--


340/Animal




400/Animal




400/Animal
600/Animal
Calves

Dairy replacements
White Veal
Continuous Housing:
110 lb (1mon.) average calf
140 lb (1mon.) average calf
All-in, all-out housing:
95 lb. at start
300 lb. at finish


3 °C / 45 °F
20 °C / 68 °F




Year-round housing in well insulated barn


Year-round housing in well insulated barn




1 10/Calf

1 16/Calf
1 10/Calf

1 20/Calf




85/Calf

127/Calf
85/Calf

170/Calf
Beef

100 lb. Cow


Ventilation by windows or doors during summer
Walls insulated less than R 5
Year-round housing in well insulated barn


Chickens

Laying Hens

Heavy Breeder Hens
Replacement Pullets
Chicken Broilers


18 °C / 64 °F
15 °C / 60 °F
15 °C / 60 °F
3 32-18 °C / 90-64°F
3 32-18 °C / 90-64°F


Cages, high density
Litter, up to 1.5 ft.2/bird
Litter or mesh floor
1 or 2 deck cages
Litter, up to 1 ft.2/bird


20.3/ hen
0.4/hen
0.4/hen
0.04-0.4/pullet
0.04-0.3/bird


6/hen
7/hen
7.6/hen
5/pullet
5/bird
Turkeys

Broilers, 0-14 weeks
Heavy Broilers, 18-22 wks
15-20 lb. max.
Breeders
(light to heavy breeds)


3 35-18°C / 95-64°F
15°C / 60°F


15°C / 60°F


Litter
Litter


Litter


0.1-0.6/bird
1-2/bird


1-2/bird


14/bird
19-32/bird


17-30/bird
Swine

Dry Sow
Farrowing Sow & Litter

Weaning Pig 15-55 lb.

Grower, 55-130 lb.
Finisher, 130-220 lb.
Combined, 55-220 lb.


13°C / 55°F
18°C / 65°F
4 18°C / 65°F
3 24-18°F / 75-65°F
24°C / 75°F
18°C / 65°F
15°C / 60°F
18°C / 65°F


Group Pens
Individual Pens
Farrowing Pens
All-in/all-out housing
Continuous housing
Partly Slotted Floor
Partly Slotted Floor
Partly Slotted Floor


6.3/sow
5.1/sow
15/sow
0.9/pig
1-5/pig
2.5/pig
4.2/pig
3.4/pig


200/sow
200/sow
5200/sow
534/pig
25/pig
568/pig
585/pig
574/pig
Horses

1000 lb. Horse


2°C / 35°F


Year-round insulated stabling, ventilated by windows and doors during summer


20/horse


1700/horse