In the autumn, when harvesting sweet potatoes, a large amount of sweet potato pods will be harvested. Fresh sweet potato pods contain about 15% to 20% dry matter, and 2.2% to 2.5% crude protein. They are high-quality green feed that can be used to feed various livestock and poultry. Commonly used methods in the agricultural area are drying or grinding, but after a long period of exposure, a large amount of vitamins are lost, and the palatability is deteriorated. If properly processed, fresh sweet potato pods can be made more palatable and have a longer use period. The high-quality feed is suitable for use when the winter green feed is lacking. First, the accumulation of fermented sweetpotato After the accumulation of fermentation, yeast moderate growth, organic matter has been degraded into a low-molecular substance that can be easily absorbed and used by domestic animals, the formation of a "sour, sweet, soft, cooked, fragrant" characteristics of glycosylated feed, Palatability has been greatly enhanced, and feed utilization has also improved. Method: The fresh sweet potato quail was cut into 2 cm long pieces, mixed with 3% to 5% of rice bran or wheat bran, fully mixed, stacked in the corner, surrounded by wood or brick blocks, with a spade a little beat, forming A flat-shaped pile of about 20 cm in thickness is sprinkled with a layer of rice bran or wheat bran topped with straw or sacks. The temperature in the stockpile was measured every 2 hours, and when the temperature reached 35°C (about 24 hours), it was ready for feeding. If the amount is too large to be used for a while, the heat-generating feed can be put into the water tank for sealing, so that the preservation time is longer and the fragrance is more concentrated, and the animals love to eat more. If you use it to feed pigs, you can mix in fresh chicken manure and cornmeal to produce better results. Second, the process of silage silage in plastic bags, in fact, is the process of culturing lactic acid bacteria, anaerobic fermentation of raw materials using lactic acid bacteria, produce large amounts of lactic acid, to inhibit the growth and reproduction of harmful microorganisms. Good silage, green or yellowish green color, shiny, aromatic, wine sour, the plant basically maintain the original structure, PH value of 4.0 to 4.2. A lot of silage requires a suitable silo. Farmers can use silage in plastic bags. This method requires less investment, simple method, long storage time, and easy access. Method: Collect fresh sweet potato pods and expose them to a moisture content of 75% for one day. The inspection method is: the petiole of the second blade of the tip is continuously folded by hand, but the small water droplet can be extruded, that is, suitable. Cut the sweet potato into 2 cm long pieces, fill it in a plastic bag, tie the bag a little, lay layers on top of the corner, press the top plank, press the big stone or other heavy objects on the board. The purpose is to squeeze the air inside the bag to create an oxygen-deficient environment. Generally silage can be opened for feeding after 1 month. When you feed, moldy areas on the edge of the plastic bag should be removed. Third, the principle of flooded fermentation and fermentation is similar to silage. At first, acetic acid bacteria were used to breed and ferment, and after the consumption of oxygen, the main use of lactic acid bacteria fermentation. Method: Wash and chop the fresh sweet potato pods, fill them in large water tanks or cement pools, and press and fill the edges while loading. After loading to 80%, put them into the wood. Put the clean stones on the plate and suppress them. Clean water so that the water surface often exceeds 10 cm of feed. Normally 4 to 6 days to complete the fermentation, when the upper part of the water will have a smell. Pull the water out and remove the feed to feed the pig. The flooded sweet potato pods changed from green to dark green, and their texture became soft, giving off a sour taste. Pigs were particularly fond of eating.
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