(1) Processing of fishmeal. Sea fish, freshwater fish and seafood processing wastes can be used as raw materials for fishmeal processing. The raw materials are first dried, dried or boiled and dried, and then processed into powdered ready-to-boil. The method is generally treated with high temperature and the quality is generally good.
(2) Processing of meat and bone meal. The main raw materials are meat processing wastes, and animal carcass tissues that are not hygienic. The raw materials are steamed, and the organs are cooked for 1 hour, and the head and hoof tissues are cooked for 2-3 hours. After cooking, remove the oil from the surface of the soup and smash it to dryness. The processed meat bone powder is light red, the moisture does not exceed 6%, and the crude protein content is more than 40%.
(3) Processing of blood meal. Mainly to slaughter the animal's blood as raw material, put the blood into the pot and heat it until the blood coagulates and the water evaporates. It is dried on the concrete floor until it is dry, and then processed into a powder. It is worth noting that the blood should be heated continuously. Stir, add 0.5%-1.5% quicklime, boil, put the blood clot into the sack and squeeze the drain, let the water drain more than 50%, then dry it, and turn it once every 1-2 hours until it is dried. The protein content of processed blood meal can reach 70%-80%, the water content should not exceed 10%, and the blood powder processed by soil method should be fed immediately.
(4) Processing of feather powder. The raw material is bird feathers. Rinse the feathers with water, dry them, then put the feathers in the acid-proof pot at a ratio of 1:6, then put in 0.2% dilute hydrochloric acid solution, cover and boil them until they are gently pulled off by hand. The acid is removed, then dried in the sun, and processed into a powder using a pulverizer. The processed feather powder has a protein content of about 70%.
(5) Processing of bone powder. Using animal bones as raw materials, the animal bones are boiled in a common pot for 7-8 hours. After the fat on the bones is boiled, it is dried in the sun, then processed into powder, and the bones can be piled up. The metal frame is roasted and pulverized to form bone powder. The bone powder is a good feed for supplementing calcium and phosphorus.
(6) Processing of eggshell powder. Take the fresh and clean eggshell as raw material, wash the eggshell into the pot and boil it. After the fish is removed, put it into a 60 °C iron pan and stir-fry it. After frying it, take it and crush it into eggshell powder. The eggshell powder is supplemented. Good feed for calcium.
(7) Processing of silkworm cocoons. Silkworm cocoons are by-products of silk reeling. Put the silkworm cocoons into the pot, boil them several times repeatedly, remove the oil, remove them, dry them, and smash them into the final silkworm cocoon powder. The silkworm cocoons contain about 45% crude protein, which is suitable for feeding pigs and poultry.
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