Table 1.

Type of feed additives in each experimental group.

Group	Source of microelements
Alfalfa 0%	alfalfa + P100%
Alfalfa 50%	mineral compounds mix (50% - P50%) and mix of enriched alfalfa biomass (50%)
Alfalfa 100%	mix of enriched alfalfa biomass + P0%
Goldenrod 0%	goldenrod + P100%
Goldenrod 50%	mineral compounds mix (50% - P50%) and mix of enriched goldenrod biomass (50%)
Goldenrod 100%	mix of enriched goldenrod biomass + P0%
Control	mineral compounds mix (manganese oxide, zinc oxide and copper (II) sulphate) – P100%

P0%, P50%, P100% – experimental premixes (Table 3).