Meat and bone meal is one of the most important animal protein products. It is also made from all or part of the residue left after removing fat, oil or other ingredients from animal tissues. It is made by high-temperature disinfection, drying and crushing. Powdered feed.
The quality of MBM varies greatly due to the composition of the raw materials and the ratio of meat and bone. The nutritional content of MBM varies greatly depending on the manufacturing process. If the raw material does not have skeletal tissue, the meat and bone meal is actually meat meal. The meat and bone meal is often mixed with hoof horn powder, fur powder and gastrointestinal contents. Because the nutritional value of protein in this part of the material is lower than that of pure meat meal, the nutritional value of meat and bone meal decreases as the content of this part of the meat increases. Meat and bone meal generally contains a certain amount of bone meal. Bone meal is used as an animal source of calcium and phosphorus, but its protein nutritional value is very low. Therefore, when the proportion of bone meal in meat and bone meal increases, the nutritional value of meat and bone meal decreases.
粗 1. Crude protein The protein content varies greatly with different raw materials, with an average of 40% to 50%. Some high-bone meat and bone meals are only about 35%. Crude proteins are mainly derived from phospholipids (cerebral phospholipids, lecithin, etc.), inorganic nitrogen (urea, creatine, etc.), keratin (horn, hoof, hair, etc.), connective tissue proteins (collagen, bone glue, etc.), muscle tissue proteins, and the like. Protein quality is second only to fishmeal, and it is also a high-quality protein feed. Generally, there are many connective tissue proteins in meat meal and meat and bone meal. Their amino acids are mainly proline, hydroxyproline, and glycine, so the amino acid composition is not good. Except for lysine content (about 2.5%), methionine (3 % ～ 6%) and tryptophan (less than 0.5%), and some products will not be absorbed due to excessive heating.
有效 2. Effective energy value The energy of meat meal and meat and bone meal comes mainly from protein and fat (8% ~ 18%), and the content and quality of these two components are greatly affected by the type of raw materials and processing technology, so the energy content varies greatly.
3. Vitamin Fat-soluble vitamin A and vitamin D are low in content due to a large number of processing processes, but they are rich in B vitamins, especially high in vitamin B12, and other contents such as nicotinic acid and choline are also high.
4. Mineral meat and bone meal coarse ash is divided into 26% ～ 40%, calcium 7 ～ 10%, phosphorus 3.8 ～ 5.0%. It is a good source of calcium and phosphorus for animals. It is not only high in content, but also in a suitable proportion. All phosphorus is available phosphorus. . In addition, the content of trace elements manganese, iron, and zinc is also high.