Swine See Differentlyswine lighting 21-2

Pigs have dichromatic vision; in the pig’s eye there are two sets of cones that give the animal peak wavelength sensitivity at 439 nm (blue color) and 556 nm(green color). The photoreceptors in a pig’s eye cannot detect the color red (>650 nm). Past research indicates that in order to get a physiological response from domestic pigs, the light exposure for “daylight” should be within the light spectrum of 380 to 580 nm.

Poultry Farm Lighting 7Poultry Farm Lighting 8Poultry Farm Lighting 9

Dairy Barn Lighting Increase Milk ProductionDairy Lighting 21

In dairy barns, the lighting requirements to slimulate additional feeding activity that results in increased milk production must provide the following:

(1) 10 to 20 footcandles of illumination in the feeding area of the barn

(2) a 16 to 18 hour time period at this level of light

(3) a continuous dark period of 6 to 8 hours. Providing illumination for 24 hours a day does not yield any additional production or animal health benefits when compared to 13.5 hours of illumination.

Dairy Barn Lighting 5

The proof is in the production:

  • 6.4% milk production increase under LEDs
  • about 4 lbs of milk per day per cow
  • $0.57 per day per cow
  • per 100 cow herd equal roughly $21, 000 per year

In short: Correct livestock lighting intensity and duration have a very positive effect on the health, fertility, welfare and productivity of animals. By providing optimal livestock lighting, overall swine farm performances will improve in a responsible way.