[View comments][Expert Q&A][Add to Favorites][Recommended to friends][Publication] Bone Powder Production Method
There are two common methods for producing bone powder: the boiling method and the steaming method. Both techniques aim to process animal bones into a fine powder that can be used as a nutritional supplement in animal feed. Here’s how each method works:
First, Boiled Bone Method
1. **Breaking**: Collect and dry the bones from livestock and poultry. Once they are completely dry, break them into small pieces using a hammer or similar tool. This makes it easier to process in the next steps.
2. **Boiling**: Place the broken bones into a large pot and add enough water to cover them. Boil the bones over low heat, preferably overnight. As the bones cook, fat will rise to the surface of the water. Skim off this fat regularly to ensure the bones are properly degreased. After boiling, remove the bones from the pot.
3. **Drying and Grinding**: Once the bones are boiled and cooled, they should be dried thoroughly. Then, grind them into a fine powder using a hammer mill or steel mill. This type of bone powder is effective at killing most pathogens due to the high temperature during boiling. However, because the bones remain hard, the digestibility and absorption rate may not be as good as with steamed bone meal.
Second, Steamed Bone Method
In this method, first, break the bones into short pieces. Place them in a pressure cooker and add enough water to fully submerge the bones. Seal the pressure cooker tightly and heat it until the temperature reaches 120°C. Keep it cooking for 24 hours. After turning off the heat, let the pot sit overnight. The next day, carefully remove the top layer of fat before taking out the bones. Dry the bones completely and then grind them into a fine powder, just like in the boiling method.
Both methods produce bone powder suitable for use in animal feed, but the steamed method generally results in a more digestible product due to the softer texture of the bones after steaming. Choosing the right method depends on the equipment available and the desired quality of the final product.
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