Recently, the villagers of Zhangxing County in the town of Qiwei County called to inquire: How do bean dregs feed? What should you pay attention to?
Liu Zhongmin, a researcher at the Provincial Institute of Animal Science and Animal Sciences, answered: The bean curd residue is a byproduct of the processing of soybean products. The moisture content of fresh soybean residue is about 90%, the crude protein content is about 2.8%, and the digestion energy is about 0.21 megacal/kg; The amount of water in 10%) medium crude protein is 25%~33.6%, digestive energy 1.89MB/kg. Due to the high cost of fresh bean dregs drying, pigs are generally fed after cooking, which can replace part of the pig feed, thereby reducing feed costs.
Production method: After the fresh bean curd is cooked, add appropriate amount of other feeds such as bean cake (bread), rapeseed cake, corn, bran, etc. In general, the amount of fresh bean curd residue should be controlled at 20% to 25% of the total amount of feed, and dry bean curd residue should be below 10%. At the same time, corn and other energy feed should be controlled in the range of 50% to 58%, bran and the like should account for 10% to 15%, bean cake or soybean meal content should also be maintained at 5% to 10%. In addition, with adequate salt, calcium and phosphorus and other mineral elements and green feed (or multivitamin), so as to ensure the comprehensive and balanced diet of pig diet, in order to meet the pig's growth and development needs, and promote healthy growth of pigs.
Pay attention to the following points when using bean curd residue to feed pigs:
After being cooked, the raw soybean meal contains anti-nutritional factors such as antitrypsin, which will hinder the digestion and absorption of legume protein by pig trypsin and reduce the utilization of protein. Therefore, the raw soybean curd residue should be heated and boiled for 10 to 15 minutes before feeding to decompose and destroy the antitrypsin, so as to increase the absorption and utilization of the feed protein in the pig. Pigs also prefer to eat cooked bean dregs. In addition, the content of fresh tofu slag is relatively large. Frozen frozen bean curd residue is likely to cause disorder of the digestive function of pigs in winter.
Some farmers who control the amount because of the cheaper price of soybean curd stalks are arbitrarily increased in the proportion of pig diets. Long-term feeding causes the pigs to lose appetite, indigestion, and even lead to infertility or miscarriage of sows. Younger piglets grow faster, have smaller stomach volume, and require higher nutrient content in feed. Generally, the amount of tofu residue should not be too high, so as to avoid the lack of nutrition and poor growth of piglets, for growing pigs, reserve pigs and empty sows. The amount of feed should not be too high or completely replace the concentrate.
Quality assurance must ensure the quality of bean curd refuse. Due to the large amount of moisture in the tofu residue, especially during hot summer months, it is prone to spoilage and mildew. It should be noted that the storage time of bean dregs should not be too long, and the storage location should be ventilated and cool, if the pigs only eat spoiled bean curd residue, May cause bowel disease, diarrhea, diarrhea and other diseases, severe cases can cause death. Therefore, the corrupted bean curd refuse must not be used for feeding pigs.
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