How to process feather powder, bone meal and blood meal?

Feeding feather powder: (1) Raw material preparation. All kinds of feathers of poultry and wild birds, or feathers that are not suitable for down processing, are dried after use. Wash with water before processing and drain. (2) sour cook. Take clean feathers, add 1 kg of feathers, add 5 kg of 2% dilute hydrochloric acid, mix in a ceramic altar, cover the altar, heat and boil, and stir several times to make the feathers evenly heated. When the boiled feathers are kept Intrinsic shape and color, and the light pull easily broken, said that has been thoroughly cooked, the feathers can be fished out, such as boiling time is too long, the feathers lose the prototype, the color is brown, it means overcooked, nutrients are lost. (3) Wash. Cooked feathers, washed with acid, dried or dried. (4) Crush. After drying, the feathers are crushed by the machine into feather powder. The finished product made of white core hair is light yellow or white floc. Feeding bone meal: (1) Boiled bone. 1 Break: The bones and bones of livestock and poultry that have been collected are dried, stored and made into small pieces. 2 boiled: The small pieces of bone in the pot and add water to boil, preferably every other night, remove the oil floating on the surface of the water, and then remove the bones. 3 Drying: Dry the fat-free bones or dry them. 4 Crushing: The dried bone pieces are crushed into bone powder on a hammer machine or steel grinder. This kind of bone meal can be killed by boiled bacteria. However, because of its hard texture, digestion is slightly inferior to steamed batter. (2) Steaming method. Knock bones into short pieces, put them in a pressure cooker, add water to submerge them, close the top cover, and heat. Cook for 2 to 4 hours at 120°C and stop heating. The next day, the pot was boiled and the upper layer of fat was removed. The bones were removed and dried and crushed. The bone powder produced by this method contains less organic matter than boiled bone powder. The main components are phosphorus and calcium, about 38% calcium, and about 20% phosphorus. Because of high temperature cooking, poultry are easily digested and absorbed, and storage time is long. Feeding blood meal: (1) carrier blood meal. 1 Use bran (or rice bran, cake meal) as carrier. According to the amount of blood, use 1 to 2 times the amount of blood carrier and blood mixture, stir evenly spread on the cement floor, diligent turning, generally after 4 to 6 hours can be dried, and then crush with the grinder. The blood meal mixed with bran or rice bran contains about 30% to 35% of crude protein, and the crude protein content of the blood meal made from cake powder is 45% to 50%. This vector blood meal does not exceed 5% in pig diets and about 3% in chicken diets. 2 Make a carrier with ground soybeans. The processing method is basically the same as that of bran as a carrier, but it is only necessary to make a well-mixed bean blood powder into a steamed bread shape, and steam on the pan for 20 minutes. After cooling, it is chopped into small pieces and dried, followed by crushing. Blood soy meal contains approximately 47% crude protein, and does not exceed 3% in chick diets. It can replace fish meal in whole or in part in chicken and egg diets. (2) Dried blood meal. Put the collected blood immediately in a wok, add 1% to 1.5% of quicklime and cook. Cook and stir while cooking to form a crisp mass. Remove the mass and load it into the sack, tie the mouth of the bag, squeeze the excess moisture on the sack with a stick, until the water is not pressed, put it on the cement floor to dry, dilute frequently when the sun shines, and break the large blood clot in time. After drying, pulverize with a grinder. This blood meal is generally used in broiler diets with 3%, laying hens with 2%~3%, and pigs with 3~5%. Blood meal is a high-protein feed, and is easily spoiled during production and storage. If blood meal is added with 0.2% calcium propionate, and the bag for blood meal is soaked in a 2% calcium propionate aqueous solution for a while, then dried blood powder will prevent Mildew effect is good. Qian'an City Agricultural Information Center

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