A method for preparing a selenium-rich feed additive
A feed additive and selenium-enriched technology, which is applied in botany equipment and methods, animal feed, animal feed, etc., can solve the problems of inorganic selenium mixed with edible animals, such as poisoning, high absorption efficiency and toxicity, and limited effect, so as to improve production performance and immunity, and the effect of solving the hidden danger of selenium poisoning
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Embodiment 1
[0015] A preparation method of a selenium-enriched feed additive, comprising the following steps: cultivating selenium-enriched milk vetch, applying a selenium-enriched organic fertilizer once in spring and before the flowering of the milk vetch, and watering once if there is no effective precipitation within 7 days after fertilization Two-thirds of the above-ground part of milk vetch is harvested after maturity, dried and crushed to make a selenium-enriched feed additive, the dry weight of the selenium-enriched milk vetch has a selenium content of 10 mg / kg, and the harvested The selenium milk vetch is dried in a dryer at 80°C to constant weight, and the dried selenium-enriched milk vetch is crushed into 80-mesh powder particles with a pulverizer, and the amount of the selenium-enriched organic fertilizer is 20 kg.
Embodiment 2
[0017] A preparation method of a selenium-enriched feed additive, comprising the following steps: cultivating selenium-enriched milk vetch, applying a selenium-enriched organic fertilizer once in spring and before the flowering of the milk vetch, and watering once if there is no effective precipitation within 7 days after fertilization , harvest two-thirds of the aerial part of milk vetch after it matures, dry and pulverize it, and make a selenium-enriched feed additive. The selenium milk vetch is dried in a dryer at 100°C to constant weight, and the dried selenium-enriched milk vetch is crushed into 150-mesh powder particles with a pulverizer, and the amount of the selenium-enriched organic fertilizer is 250 kg.
Embodiment 3
[0019] A preparation method of a selenium-enriched feed additive, comprising the following steps: cultivating selenium-enriched milk vetch, applying a selenium-enriched organic fertilizer once in spring and before the flowering of the milk vetch, and watering once if there is no effective precipitation within 7 days after fertilization Two-thirds of the above-ground part of milk vetch is harvested after maturity, dried and crushed to make a selenium-enriched feed additive, the dry weight of the selenium-enriched milk vetch has a selenium content of 50 mg / kg, and the harvested The selenium milk vetch is dried in a dryer at 120°C to constant weight, and the dried selenium-enriched milk vetch is crushed into 200-mesh powder particles with a pulverizer, and the amount of the selenium-enriched organic fertilizer is 500 kg.
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