Meat and bone meal is a secret product.

Meat and Bone Meal (MBM): A Guide to Its Use in Animal Nutrition

Introduction
Meat and bone meal (MBM) is an essential component of compound feeds in animal nutrition, especially in the poultry sector. This guide aims to explore various aspects of MBM, including its nutritional composition, production processes, and regulatory status. Readers will gain insight into both the benefits and drawbacks of using MBM in poultry and other feed industries, as well as issues like food safety. The document is intended for poultry producers, feed manufacturers, and nutritionists who apply best practices and modern technologies to improve feed utilization and animal health. Let’s explore what meat and bone meal is and why it plays a critical role in poultry nutrition today.

What is Meat and Bone Meal?

Understanding the Composition of MBM
Meat and bone meal (MBM) primarily consists of meat, bones, by-products, and other edible tissues derived from slaughtered animals. However, its nutritional profile is dynamic and varies significantly depending on the animal source, processing techniques, and the meat-to-bone ratio. MBM generally contains a high concentration of protein—ranging from 45% to 55% on a dry matter basis—as well as essential amino acids necessary for animal growth and development, often replacing other animal-based proteins. In addition to these nutrients, MBM is also a good source of calcium and phosphorus—critical minerals for bone development and metabolic processes. However, the digestibility and bioavailability of these nutrients depend on processing conditions such as temperature and rendering time, making quality control crucial in MBM production, particularly for products intended for animal feed where safety is a top priority.

How is Meat and Bone Meal Produced?

The stages required for producing meat and bone meal (MBM) are critical for ensuring the safety and nutritional value of the final product. As mentioned, animal by-products such as bones, fat, and offal are collected from processing facilities. These materials are first ground and then cooked under high temperatures and pressure. This rendering phase is essential because it separates fat from solid tissue and reduces microbial contamination.

The resulting rendered, yet still dry, product is then further processed into finer particles (often restricted to specific sizes). The final MBM product is stored after cooling and packaging, with preservation conditions maintained to retain nutritional value. Strict quality control measures are applied throughout production to evaluate protein levels, mineral content, and hygiene standards, in line with legislative feed safety requirements.

Explaining the Rendering Process

The rendering process is key in converting animal waste into safe and nutritious MBM for feed. It begins with raw material collection, where the materials are chopped into smaller pieces and heated—typically between 130°C and 150°C under controlled pressure. This stage promotes hydrolysis, releasing protein and fat components from the material. Most rendering lasts several hours and eliminates pathogenic microorganisms, ensuring the biosafety of the final product. After rendering, the mixture is cooled, the fat is removed, and the solids are ground into the required particle size. The entire process is governed by food safety regulations to protect consumers and maintain quality, making it an essential part of sustainable livestock feeding.

How is MBM Used in Animal Feed?

MBM as a Protein Source
Meat and bone meal (MBM) is a primary protein source in animal feed, particularly in livestock and aquaculture. Its dietary protein content ranges from 45% to 55%, depending on factors like composition and processing method. The proteins in MBM are highly digestible, providing essential amino acids vital for growth, reproduction, and overall health, especially when used in poultry feed mixes. Its high mineral content—especially calcium and phosphorus—enhances its nutritional value, supporting bone development and various metabolic functions. MBM’s rich nutrient profile makes it a valuable component in compound feed for meeting various animals’ protein and metabolic needs.

Incorporating MBM into Feed Formulas
Incorporating meat and bone meal (MBM) into animal feed requires careful consideration to maximize its benefits while maintaining nutritional balance. Formulating feed involves calculating MBM inclusion rates to meet the specific dietary needs of target species. This includes assessing amino acid profiles and the digestibility of protein and minerals to achieve an optimal nutritional mix. Additionally, feed safety regulations must be observed, such as sourcing MBM from licensed suppliers and maintaining storage conditions to preserve feed quality. Proper monitoring and evaluation of MBM batches further enhance its use in feed formulations.

Advantages of MBM in Poultry Feeding

Meat and bone meal (MBM) offers multiple benefits when used in poultry feed. First, it provides an excellent protein source rich in essential amino acids needed for poultry. The use of MBM enhances feed efficiency, improving feed conversion ratios and supporting poultry growth and productivity. MBM’s high mineral content—especially calcium and phosphorus—benefits bone development and contributes to egg production and quality. Moreover, MBM inclusion can reduce compound feed costs due to its nutrient density. When used responsibly, MBM supports animal health and welfare while optimizing poultry nutrition.

What is the Nutritional Value of MBM?

Protein Content and Nutrient Distribution
MBM is protein-rich, with levels ranging from about 45% to over 55%, depending on origin and processing. This composition, derived from processed meat and bones, provides a complete profile of amino acids necessary for muscle growth and animal development. On average, around 85% of MBM protein is digestible, making it highly usable by poultry.

Along with protein, MBM supplies vital minerals—mainly calcium and phosphorus—that support bone formation and metabolic functions. Calcium typically accounts for about 10% of MBM, with phosphorus levels ranging from 4% to 7%. These minerals are critical for improving skeletal health, feed-to-body mass conversion, and egg production. Thus, MBM contributes significantly to poultry performance and health.

Calcium and Phosphorus in MBM
Meat and bone meal (MBM) is a key source of calcium and phosphorus, essential for skeletal structure and metabolism in poultry. About 10% of MBM is calcium, while phosphorus makes up 4–7%. These minerals are crucial for bone development and overall feed value. The calcium-to-phosphorus ratio in MBM also influences nutrient absorption and poultry performance.

Comparison of MBM with Other Protein Meals
Comparing MBM with other protein sources like fish meal and soybean meal reveals differences in protein profile and nutritional value. MBM has higher protein digestibility (~85%) than soybean meal (~80%). It also contains more calcium and phosphorus than soybean meal, making it better for bone development in poultry. While fish meal has high protein content, its digestibility can vary by source. Fish meal also provides omega-3 fatty acids, whereas MBM is rich in essential amino acids for poultry. MBM’s composition makes it a valuable ingredient for improving poultry health and productivity.

Is MBM Safe for Pets?

Safety Regulations and Standards
Meat and bone meal (MBM) is subject to strict regulations and control measures for pet food applications. The Association of American Feed Control Officials (AAFCO) provides guidelines for ingredient sourcing and processing. Animal-based proteins like MBM must not pose health risks to pets. The U.S. Food and Drug Administration (FDA) also regulates feeds containing animal proteins, including MBM. Approved sourcing and pathogen-free processing are required. Regular inspections and quality assurance programs ensure MBM safety, making it a viable and nutritious pet food ingredient.

Benefits of MBM in Pet Diets
In pet diets, meat and bone meal (MBM) offers nutritional advantages. Its proteins support muscle growth and body maintenance, while its amino acids meet dietary needs. The calcium and phosphorus in MBM promote healthy bones and teeth. Its high digestibility ensures efficient nutrient absorption. MBM is a cost-effective nutritional ingredient that supports pet health and wellbeing.

Potential Risks and Mitigation Measures
While MBM is valuable in pet food, it may pose safety concerns if not processed correctly. Risks include contamination with pathogens like Salmonella or E. coli. To mitigate this, MBM should be sourced from certified suppliers who follow safety protocols. Thermal treatment is essential to eliminate harmful microbes.

Another concern is contamination with heavy metals or toxins from recycled animal materials. This can be addressed by screening MBM batches for contaminants and applying detoxification processes as needed. Traceability systems enhance safety by tracking animal-derived sources and enabling recalls if required. These measures significantly reduce risks and help ensure MBM is safe for pets.