Written by: Dr. Jacquie Jacob, University of Kentucky
In the United States, millions of tons of animal by-products are produced annually. In the past, the only options for using the by-products were as rendered products for use in animal diets or disposal in landfills. New uses of meat and bone meal are being explored, including its use as a fuel or a phosphorus fertilizer. More recently, researchers at South Carolina’s Clemson University have been looking at the use of meat and bone meal in petroleum-free bioplastics that can be used in items such as skis and snowboards.
Slaughter by-products are routinely recycled for use in animal feeds. They are cooked (rendered) to produce a nutritional and economical feed ingredient. The by-products used in feeds include meat trimmings, inedible parts and organs, fetuses, and
There are a number of different types of meat and bone meal. The raw materials in meat and bone meal in the United States are typically beef and pork by-products.
Meat and bone meal is an excellent source of protein. In poultry diets, meat and bone meal is typically limited to less than 5% of the diet content because of the high calcium, phosphorus, and lysine content of the meal.
Nutrient content of slaughterhouse by-products (Source: Feedstuffs Ingredient Analysis Table: 2016 edition of the Feedstuffs Reference Issue, by Amy Batal and Nick Dale, University of Georgia)
|Meat and bone meal, 45%||92||2375||45.0||8.5||2.5||11.00||0.53||2.20|
|Meat and bone meal, 50%||93||2530||50.0||8.5||2.8||9.20||0.67||2.60|
|Meat meal, 55%||93||2685||55.0||7.2||2.5||7.60||0.75||3.00|
DM = Dry matter, %; Energy = kcal/kg; CP = crude protein, %; EE = Crude fat (ether extract), %; CF = Crude fiber, %; Ca = Calcium, %; Met = Methionine, %; Lys = Lysine, %