Cows benefit of good and efficient light management in the barn. Simulating a long summer day stimulates growth, heat detection and milk production.
Benefit from optimal lighting requires a distinction between two light schedules: one for young stock and lactating cows and one for dry cows.
Advantages for the hormonal balance
Providing an optimal light intake during the year has a positive effect on the cow’s hormonal balance. The hormone Melatonin decreases while – at the same time – the level of the growth hormone IGT-1 increases. This stimulates the cow’s activity leading to higher feed intake and a higher milk production.
Young stock and milking cows need a so-called ‘long-day photoperiod’ (LDPP). This means 16 hours of daylight and 8 hours of darkness. Dry cows – however – need the opposite: 8 hours of daylight and 16 hours nighttime, a ‘short-day photoperiod’ (SDPP).