Science · 1978 · 165 citations · 5 references
AgricultureAnimal SciencesDairy ScienceLactationLactation BiologyLactation PhysiologyAgricultural Lighting SystemsDairy Cow NutritionFeed EfficiencyLight ManagementLight SourcesAnimal Weight GainFeed Intake Under Lighting RegimesGrowth Performance Under Lighting RegimesLight Effects On GrowthMilk Yield ImprovementSupplemental LightingWeight Gain EfficiencyWeight Gain Velocity
Sixteen hours of light daily (114 to 207 lux) increased weight gains and milk yield 10 to 15% in Holstein cattle in comparison with cattle exposed to natural-length photoperiods (39 to 93 lux) of 9 to 12 hours. The weight gain was accomplished without increased consumption of feed. Manipulation of supplemental light may thus cause dramatic increases in food supplies from animals.
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