Feed for laying ducks capable of increasing laying rate and preparation method thereof
A technology for laying duck feed and egg production rate, applied in animal feed, animal feed, additional food elements, etc., can solve the problems of low content of active ingredients, unreasonable nutritional structure, slow growth of laying ducks, etc., to improve growth performance, reduce Feeding costs, the effect of increasing testosterone levels
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[0031] The preparation method of the above-mentioned Simao vine glycosides is as follows: take the dry powder of Simao rattan bark, reflux extraction with ethanol for 3 times, each time for 2-3 hours, combine the extracts, recover the ethanol under reduced pressure, take the extract and divide it into three times with petroleum ether at 60-90°C. Reflux to degrease, then extract with acetone, recover acetone, obtain crude extract, then go through silica gel column chromatography, use chloroform:methanol=90:10 ratio to make eluent, then go through silica gel column chromatography and reverse phase Column chromatography, that is, Simao glucoside.
[0032] The preparation method of the above-mentioned Artemisia argyi volatile oil is as follows: after drying the Artemisia argyi leaves at room temperature, pulverize them through a 60-mesh sieve, place them in a pressurized solvent extraction device, add 60% ethanol at a solid-to-liquid ratio of 1:30, and extract them at an extraction...
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