First, bean cake
Untreated bean cake and soybean meal contain harmful components such as antitrypsin, urinary enzyme, hemagglutinin, saponin, and goiter-inducing factor, which will have adverse effects on the digestion and utilization of feed and livestock. In particular, antitrypsin factors cause pancreatic enlargement and protein digestion is affected. However, these harmful substances are not heat-resistant, so they can be detoxified by heating under appropriate water. However, avoid excessive heat, otherwise it will reduce the activity of lysine and arginine, and also destroy cystine.
Second, cottonseed cake
Cottonseed cake contains gossypol poisonous to livestock and poultry, mainly free gossypol. There are two commonly used simple detoxification methods: dissolve 25 kg of ferrous sulfate solution in 2500 kg of water, soak 1000 kg of crushed cottonseed cake, stir for many times, soak for one night and then pour off the treatment solution, then rinse with water twice. The treated cottonseed cake can be directly fed with other mixes. Put the pulverized cottonseed cake into the pot, add water, soak the cotton seed cake for a degree, and boil for 2 hours, which can greatly reduce its toxicity, pour off the treatment liquid, and then rinse it with water for 2 to 3 times.
Third, rapeseed
Soak the crushed rapeseed cake in warm water for half a day, pour off the soaking solution, add 20% water and boil for 1 to 2 hours, then add it. Rinse the rapeseed cake into small pieces, boil in a 0.5% sodium sulfate aqueous solution for about 2 hours, turn it from time to time, add water to cool off after the flame is extinguished, filter the treatment solution, and rinse it with water several times to use.
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