Long Day Lighting

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Long Day Lighting is when you manage your barn’s lighting to operate on a “Long Day Photoperiod” so that lights are on for 16 to 18 hours daily and operating with 15 to 20 foot-candles.  Alternatively for 6 to 8 hours the barn is provided with complete darkness, less than 1 foot-candle.  While many barns provide night lighting – research shows that cows can find their away around in the dark.

Research Results from Long Day Photoperiod:

  • Lactating herd will respond in about 2 to 4 weeks and average milk production increase averaged 8 to 10%
  • Livestock will respond with an increase of dry matter intake.
  • Young livestock will mature faster, increased growth and reproduction.
  • First lactation cows are more productive and cycle back into calf with ease.