FIELD: agriculture.
SUBSTANCE: group of inventions relates to agriculture, in particular to production of milk with high content of natural vitamin D3. One or more lactating animals are irradiated in a covered structure, having at least one luminaire with a lamp emitting UV-A radiation and UV-B radiation, and milking of animals. UV-B component of the emission of the lamp emission spectrum is at least 0.1 % of the lamp radiation intensity and less than 5 % of the lamp radiation intensity.
EFFECT: higher content of natural vitamin D3.
20 cl, 1 dwg, 2 tbl
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