Soybean leaf is a nutrient-rich feed that is very good for feeding pigs. It was determined that soybean leaves contained 6.1% of crude protein, 1.8% of crude fat, and 4% of crude fiber. In each kilogram of soybean leaves, it also contains 9.3 grams of calcium and 0.7 grams of phosphorus. 3 kilograms of soybean leaves, equivalent to the crude protein content of 1 kilogram of soybean cake. Therefore, the use of soybean leaves to feed pigs is an important way to open up the source of protein feeds, given the current lack of protein feeds in rural areas.
Collection of soybean leaves should pay attention to matters
1, on the premise of not affecting soybean yield and quality, timely collection. The collection time is generally the best during the maturity of soybean wax. At this time, the soybean leaves are greener, nutrient-rich, less vitamin loss, high quality, and low crude fiber content.
2. If the collection is too early, it will not only damage the photosynthesis of the plant, but also affect the absorption of soybean nutrients, leading to a decrease in soybean yield and product quality. At this time, the soybean leaves have more moisture content, less dry matter content, and less collected amount. Therefore, the collection cannot be premature and soybean leaves should be collected in a timely manner.
3, if the collection is too late. Due to the yellowing of soybean leaves, the large consumption of nutrients, the loss of large amounts of vitamins, and the rapid decline of nutrients and digestibility, the feed value of soybean leaves will also be reduced. Therefore, collecting soybean leaves must be timely.
Feeding method
Using soybean leaves to feed pigs, the following three methods can be used:
Fresh feed: The collected fresh soybean leaves are removed from the soil, impurities and foreign matter. After being chopped, they are directly mixed in the feed of the pig. They can be mixed with cornmeal, soybean cake, wheat bran, etc. About 1/3 can be.
Made of silage: Although soybean leaves are rich in protein, their sugar content is relatively low. When silage is used, semi-dry silage is used. Soybean leaves can be sun dried to a moisture content of about 50%, and then cut with a knife, and put it into a silo, silage tank or plastic bag, compaction can be compacted. During the fermentation time, the pigs are usually sealed and fed from 5 to 7 days. When they are sealed, they must be removed from one side and then covered to prevent contamination. The amount of feeding should account for about 1/4 of the pig diet, pregnant sows do not feed, to prevent abortion.
Crush into soybean leaf powder: Place the collected soybean leaves in a dry and well-ventilated place, make them dry, have a moisture content of about 30%, and then quickly dry in the sun, moisture content below 13%, and then use it. The pulverizer will pulverize it into a powder and serve as a soybean leaf powder, which can be used for feeding pigs and can be stored for a long period of time. When feeding pigs, it is appropriate to account for 20 to 40% of the pig's diet.
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