A functional feed for producing red-heart duck eggs is characterized by containing trace elements such as POTAMOGETON crispus, bean curd, fish meal, salt and the like, and is prepared by mixing.
The technical scheme of the preparation method of the functional feed for producing red-heart duck eggs is that fresh POTAMOGETON crispus is washed, blanched in boiling water or steam at 100 degree for 2-3 minutes, taken out, cooled in clear water, and then dehydrated by a centrifuge.
Cutting, quickly drying in low temperature, low oxygen and dark environment, and pulverizing. Mixing with other ingredients, granulating with granular feed machine, and drying at low temperature, low oxygen and dark place. After splitting, put into inert packaging and store at low temperature in the dark. When feeding laying ducks, it is added to food according to a certain proportion.
Background of functional feed for producing red heart duck eggs
Because some carotenoid compounds can be converted into vitamin A in the human body, this carotenoid is called provitamin A. Related experiments have proved that the main component of the red substance contained in the yolk of red duck eggs is carotenoid.
The main food of laying ducks comes from POTAMOGETON crispus on the lakeshore. However, due to the influence of POTAMOGETON crispus growing season, quantity and many other factors, it is not guaranteed that laying ducks will definitely produce red-hearted duck eggs. The main purpose of the existing functional feed in the market is to improve the survival rate and laying rate of laying ducks. At present, there is no report on this, so the red heart duck eggs containing carotenoids were studied and produced.