Yet despite the widespread use of organic trace minerals (OTMs), one important misconception continues to exist in the industry: that all organic trace minerals are the same.

Looking Beyond Inclusion Levels
When evaluating trace mineral programs, discussions often focus on inclusion rates, mineral concentration, and cost per ton of feed.

However, the true value of a trace mineral is not determined simply by how much is added to a formulation. Rather, it is determined by how much of that mineral is available for absorption and utilization by the bird. This distinction becomes increasingly important in modern poultry production.

Many producers experiencing challenges like, inconsistent performance, reduced meat quality, or variability in the flock focus on nutrient inclusion. Yet nutrients can only contribute to biological functions if they successfully reach the absorption sites where they are needed.

As poultry genetics continue to advance, nutritional efficiency has become just as important as nutritional adequacy. This shift is causing nutritionists to move beyond a simple question of: “How much mineral is in the feed?” to a more important question: “How much mineral is actually available to the bird?”

Understanding the Challenge: Mineral Antagonism
Trace minerals perform important functions throughout the bird’s body. Zinc, copper, and manganese act as cofactors for numerous enzymes involved in bone formation, connective tissue development, collagen synthesis, skin integrity, antioxidant defense, and immune function.

However, the digestive tract is a highly complex environment. As minerals move through digestion, they encounter changes in pH and interactions with dietary compounds such as phytate, fiber components, and even other minerals. These interactions can reduce mineral availability before absorption occurs.

This phenomenon, referred to as mineral antagonism, helps explain why increasing mineral inclusion does not always result in improved mineral utilization. Simply feeding more minerals does not necessarily mean the bird receives more minerals. In many situations, the challenge is not supply. The challenge is bioavailability.

Dietary antagonisms can reduce mineral availability before absorption occurs, limiting nutrient utilization despite adequate inclusion levels

Organic Trace Minerals: A Category, Not a Chemistry
To help improve mineral bio-availability, the industry increasingly adopted organic trace minerals. However, the term “organic trace mineral” can create confusion. Some assume that all OTMs provide similar benefits because they belong to the same category. In reality, organic trace minerals represent a broad group of products that may differ substantially in:
· Ligand type
· Ligand-to-mineral ratio
· Molecular structure
· Bonding characteristics
· Electrical charge of the molecule
· Stability in Upper Digestive Tract
These differences influence how minerals behave in the gastrointestinal tract and how effectively they remain available for absorption. In other words, two products may both be labelled as organic trace minerals while functioning very differently inside the bird.

Why Chelation Matters
Among organic trace minerals, one class stands out from the others: bis-chelates. The word chelate originates from the Greek word chela, meaning crab claw or pincer. Similar to two crabs holding a metal securely giving it the maximum protection a Chelate forms when a ligand connects to a metal atom at more than two points. A 2 five member rings connected to the metal with two points of contact is the most stable complex found in nature. This structure helps provide protection compared with less defined mineral associations. However, not all organic trace minerals are true chelates. True chelates require a neutral charge to protect the mineral and enhance stability. Not all organic trace minerals (OTMs) provide a neutral charge; therefore, not all OTMs are true chelates. Some products are better described as complexes, proteinates, or other association forms. While they are still classified as organic trace minerals, they can differ significantly in chemical stability and behavior during digestion. The degree of protection provided by the mineral structure ultimately determines how vulnerable the mineral may be to antagonistic interactions.
Differences exist among chelates, too. There are chelates where one ligand is bound to the metal and then there are bis-chelates where two ligands are bound, creating a neutral charge and making the molecule less susceptible to antagonism. (see image)

Why Molecular Structure Matters
Research continues to demonstrate that mineral structure influences stability and bio-availability. When minerals dissociate during digestion, they become charged ions that are more likely to interact with negatively charged compounds such as phytate, fiber complexes and other minerals. These interactions can reduce availability before absorption occurs.

For this reason, increasing attention is being given to mineral structures specifically designed to maintain stability throughout digestion. One such approach is bis-chelation technology.

Bis-chelated trace minerals are characterized by a defined molecular structure consisting of one mineral ion bound to two ligands, creating two stable chelate rings. This unique architecture helps maintain structural integrity while moving through the digestive tract.
An equally important feature is their neutral molecular charge. Because neutrally charged molecules are less likely to participate in unwanted interactions, the structure helps protect the mineral, reducing opportunities for antagonism and supporting mineral availability until absorption occurs.

Bis-chelated trace minerals feature a defined molecular structure designed to support stability and mineral availability during digestion.

The Future of Trace Mineral Nutrition
As poultry production evolves, mineral nutrition must evolve with it. The industry’s next opportunity may not come from increasing mineral inclusion rates but from improving how effectively minerals are utilized by the bird. This requires looking beyond product categories and focusing on the scientific characteristics that influence mineral availability. Organic trace minerals can provide significant advantages over traditional inorganic sources. However, not all organic trace minerals are created equal. Their molecular structure matters. Their stability matters. And ultimately, their ability to deliver minerals to the animal matters.

As nutritionists continue searching for ways to improve performance consistency, skeletal integrity, meat quality, and return on investment, bis-chelated trace minerals are an increasingly important technology because they combine defined structure, enhanced stability, and optimized bioavailability into a scientifically designed mineral solution.

Contact your local NOVUS representative to learn more about bis-chelated trace minerals from the company that brought the technology to the animal agriculture industry over 20 years ago.