Using salt water to make fermented feed not only solves the source problem of pig feed in winter and spring, but also saves 70% concentrate feed for each pig. This kind of feed has the advantages of simple production method, wide sources of raw materials, long storage time of half a year, sweet and sour wine, which is loved by pigs and fast weight gain.

2. koji-making: weigh hay powder (hay or crop straw), rice bran (or bran), boiled water and salt according to the weight ratio of 25%, 67%, 7% and 1% respectively. First, melt the salt with water, and then cool it to about 40℃ before mixing it with other raw materials. Keep the humidity from dripping by hand, and then pile it up. When stacking materials, first spread 10 cm hay on the ground to prevent moisture.

Each layer of material is 35cm, covered and tightly covered with sacks. In this way, generally speaking, the heap temperature can be raised to 40℃ after 2 days, and the bouquet with nasal spray appears about 3 days, indicating that the starter has been made. The storage period of the prepared sake koji should not exceed 65438 0 weeks. When making koji, hay powder can also be omitted if there is enough concentrated feed.

3. Long-term fermentation: While making koji, we should prepare for long-term fermentation raw materials. Water hyacinth (or water hyacinth, peanut), hay powder, rice bran and distiller's yeast were weighed according to the proportions of 75%, 14%, 5% and 6% respectively. First, the distiller's yeast is mixed with hay powder and rice bran, and then mixed with water hyacinth (water hyacinth should be chopped and dried until the leaves are rolled up) and piled indoors. Before stacking, it is necessary to lay a 10 cm hay bottom.

When stacking materials, step on them layer by layer, and the thickness of each layer is 50-60 cm (humidity standard is the same). The whole pile height should not exceed 1. 7 meters, unlimited width, flat top. Generally, the temperature can rise to 50℃ in about 3 days, and a layer of frosty white hair will appear on the pile after 3-4 days. At this time, it can be covered with plastic film (a small hole can be left in a convenient place for observation when sealing). It takes about 65,438+05 days, and it will be ready when it is sour, sweet and fragrant.

If it is made of green coarse grains such as sweet potato vines or radish tassels, the more broken the better. A few days after stacking, if there is water at the bottom, it means there is too much water, so it needs to be opened in time, mixed with hay powder and stored again.