2006 · 14 citations · 0 references
AgricultureAnimal SciencesDairy ScienceDairy Herd ManagementRuminant NutritionDairy Cow NutritionFeed EfficiencyNitrogen CycleNitrogen FixationNitrogen ManagementNitrogen NutritionDairy Manure ManagementFeed Efficiency OptimizationLivestock Performance AssessmentManure Nitrogen ManagementNitrogen Loss ReductionNitrogen Source UtilizationNitrogen Utilization Efficiency