Moisture Optimization and Mold Control:
An Integrated Approach to Improving Feed Quality,
Shelf Life, and Feed Mill Profitability in Tropical Climates

Dr. Maloshrie Bora, Senior Program Manager – Feed Safety, Trouw Nutrition South Asia

Across India and South Asia, feed manufacturers today face a common challenge: producing safe, stable, high-quality feed while navigating increasingly variable climate conditions, fluctuating raw material quality, rising production costs, and greater demands for feed efficiency.

Among the many factors that influence feed quality, moisture management remains one of the most underestimated. Yet moisture directly impacts pellet quality, nutrient preservation, feed hygiene, shelf life, production throughput, and overall profitability. Improper moisture management can result in shrinkage, spoilage, mold proliferation, nutrient losses, increased fines, and reduced mill efficiency. Conversely, optimized moisture control can generate significant economic returns while improving feed quality throughout the supply chain.

The Hidden Economics of Moisture Loss
During feed manufacturing, moisture is lost at several stages, including grinding, conditioning, pelleting, cooling, storage, and transportation. Industry observations indicate that feed mills can lose between 0.5% and 1.5% moisture during production, resulting in direct shrinkage and reduced profitability. A feed mill producing 500 tonnes per day can lose approximately 5 tonnes of saleable product for every 1% moisture reduction. In an industry where margins are constantly under pressure, minimizing process losses represents a substantial opportunity for value creation.

Why Adding Water Alone Does Not Solve the Problem
A common industry practice for compensating moisture losses is the addition of water during feed processing. While this may appear straightforward, water possesses high surface tension and does not distribute uniformly throughout the feed matrix. Instead, free moisture often remains on the surface of feed particles, increasing water activity and creating favourable conditions for microbial growth. The challenge for the modern feed industry is therefore not simply increasing moisture content, but ensuring moisture is effectively distributed and retained throughout the feed while maintaining microbial stability.

Mold Growth: A Feed Quality and Profitability Threat
Molds are among the most significant biological threats to feed quality. Beyond visible spoilage, molds consume valuable nutrients, reduce energy content, affect feed palatability, shorten storage life, and create conditions favourable for mycotoxin production. The economic implications can be significant. Raw materials often constitute up to 80% of total feed production costs. Any reduction in nutritional value, shelf life, or feed volume directly impacts both manufacturers and producers downstream.

Emerging Scientific Approaches to Mold Inhibition
Advances in feed preservation technology have moved beyond conventional organic acid applications. Modern solutions increasingly combine multiple modes of action to optimize efficacy under practical feed manufacturing conditions. These technologies typically integrate:
Organic acids
– Buffered acid systems
– Moisture management agents
– Surfactants and emulsifiers
– Synergistic bioactive compounds
Such approaches improve moisture distribution, enhance contact between active ingredients and microbial cells, and prolong preservation effectiveness throughout storage. This scientific evolution reflects the industry’s transition from simple preservation strategies toward integrated moisture and microbial management systems.

Commercial Validation: Integrating Moisture and Feed Hygiene
Research and commercial evaluations have demonstrated that moisture management and mold control must work together. In one reported study, the addition of plain water alone reduced feed shelf life by approximately 33%. However, when moisture was combined with an integrated mold inhibition program, shelf life improved compared to untreated feed while preserving feed quality and stability. Additional commercial applications have shown benefits including:
– Improved feed mill throughput
– Enhanced pellet durability
– Reduced reprocessed fines
– Better moisture retention
– Improved production efficiency
– Greater feed stability during storage
These findings highlight that effective moisture optimization depends on simultaneously managing microbial risks

A Modern Approach for South Asia
Recognizing the unique challenges faced by feed manufacturers in tropical climates, Trouw Nutrition has developed integrated solutions specifically designed to optimize moisture management and feed hygiene.

Among these solutions is the Fylax® portfolio, which combines organic acid technology, moisture management agents, surfactants, and the proprietary ActiProp® technology platform. The objective is to improve moisture distribution, enhance mold inhibition, preserve nutrient value, and support feed mill efficiency within a single integrated program. ActiProp® technology works by increasing mold cell wall permeability and improving access of active ingredients to microbial targets, resulting in enhanced preservation performance compared with conventional approaches. At the same time, moisture-management components facilitate more uniform distribution of moisture within the feed matrix, helping improve operational efficiency and shelf-life outcomes.

In today’s feed industry, moisture management can no longer be viewed simply as a processing parameter—it is a critical driver of feed quality, feed safety, and profitability. As feed manufacturers across India and South Asia face increasing challenges from humidity, raw material variability, and shelf-life pressures, an integrated approach that combines moisture optimization with effective mold control is becoming essential. By preserving nutrient value, reducing shrinkage, improving pellet quality, and enhancing microbial stability, modern feed hygiene solutions can help mills achieve greater operational efficiency while delivering safer, more consistent feed to livestock producers. Ultimately, successful feed preservation is not just about preventing spoilage—it is about maximizing value throughout the feed-to-food chain.

Every day, a broiler’s intestine processes several times its body weight in feed and water, encounters billions of microorganisms, responds to environmental stress, and continuously decides what enters the body and what remains outside.

In many ways, the gut functions as a customs checkpoint, security system, digestive factory, and immune headquarters—all at the same time.

In fact, nearly 70% of the bird’s immune cells are associated with the gastrointestinal tract, making it a key player in both health and performance. The remarkable aspect is that when the gut is functioning well, nobody notices it. When it begins to fail, everybody notices the consequences.

The Modern Poultry Bird: Built for Speed
Today’s broiler is a biological marvel. Through decades of genetic selection, modern birds reach market weight faster and more efficiently than ever before.
However, this achievement comes with a hidden challenge.

The digestive tract has become one of the most critical performance-limiting organs in poultry production. Every gram of feed must be digested, absorbed, and converted into muscle within an increasingly compressed production cycle.

Twenty years ago, a small reduction in nutrient absorption might have gone unnoticed. Today, even minor intestinal inefficiencies can translate into measurable losses in body weight gain, feed conversion ratio, and profitability. Modern birds can no longer afford a lazy gut.

The Gut Is Constantly Making Decisions
Traditionally, we think of the intestine as a nutrient absorption organ.
In reality, the gut is making thousands of biological decisions every second.

– Should nutrients support growth or immunity?
– Should a microorganism be tolerated or eliminated?
– Should energy be invested in production or defense?
– Should the intestinal barrier remain open for absorption or tighten to prevent invasion?

These microscopic decisions ultimately determine flock performance.
In many ways, poultry production is not simply about feeding birds—it is about influencing the decisions being made within the gut.

The Hidden Cost of Inflammation
One of the most important concepts emerging in poultry science is that inflammation carries a nutritional cost.
Whenever the intestine encounters stress from pathogens, mycotoxins, heat, poor litter quality, or microbial imbalance, the immune system becomes activated.
The immune response is essential for survival, but it is expensive.
Energy that could support growth is redirected toward immune activity.
Amino acids that could build muscle are utilized to produce immune proteins and inflammatory mediators.
Vitamins and minerals become involved in tissue repair and antioxidant defense.
The bird continues eating, yet a significant proportion of nutrients may no longer be contributing to production.
This phenomenon is often referred to as the “hidden feed cost” of inflammation.

The Silent Performance Thief
One of the greatest misconceptions in poultry production is that intestinal problems always produce visible symptoms.
– Not necessarily.
– Many flocks show normal feed intake, acceptable mortality, and no obvious disease outbreaks. Yet they consistently fail to achieve target performance.
– A slight reduction in nutrient absorption.
– A minor microbial imbalance.
– A low level of intestinal inflammation.
– A subtle increase in intestinal permeability.
Individually these changes may appear insignificant. Collectively they can result in substantial economic losses. This is why gut health is increasingly viewed not as a disease issue but as a performance issue.

The Microbial Workforce Inside Every Bird
Perhaps the most fascinating discovery in recent years is the realization that birds are never truly alone.
The digestive tract contains trillions of microorganisms collectively known as the gut microbiome.
These microbes help digest feed ingredients, produce beneficial metabolites, support intestinal development, influence immune responses, and compete with harmful bacteria.
Some scientists now describe the microbiome as an additional organ because of its profound influence on bird health.
This raises an interesting question:
Are we feeding the bird, or are we feeding its microbiome?
The answer is both.
The future of poultry nutrition may depend as much on managing microbial populations as on balancing nutrients.

Heat Stress: The Gut’s Greatest Enemy
In many poultry-producing regions, heat stress has become one of the most significant challenges affecting gut health.
High environmental temperatures reduce blood flow to the intestine, increase oxidative stress, and compromise intestinal barrier integrity.
As a result, harmful bacterial toxins can cross the intestinal wall and trigger inflammation.
Often the first casualty of heat stress is not growth—it is gut integrity.
This may explain why heat-stressed flocks frequently show poorer FCR, increased wet litter, reduced nutrient utilization, and greater disease susceptibility.
As global temperatures continue to rise, protecting gut health during periods of heat stress will become increasingly important.

The Gut in the Antibiotic-Free Era
The poultry industry is rapidly transitioning toward antibiotic-free and reduced-antibiotic production systems.
While this shift addresses consumer concerns and regulatory requirements, it has also increased attention on intestinal health.
Without routine antibiotic growth promoters, producers must rely on alternative strategies to maintain gut stability.
Probiotics, prebiotics, β-glucans, mannan oligosaccharides (MOS), organic acids, phytogenic compounds, and postbiotics are increasingly being used to support intestinal resilience and microbial balance.
The focus is shifting from killing pathogens to creating an intestinal environment where beneficial microbes and the host can thrive together.

More Birds or More Protein?
The global poultry industry is not being asked to produce more birds.
It is being asked to produce more protein.
As the world’s population grows and consumers increasingly seek affordable animal protein, poultry production continues to expand. Industry projections estimate the sector will grow at a CAGR of approximately 5–7% over the coming years.

But growth alone is not enough.
Producers are expected to deliver more meat with fewer resources, lower feed costs, and a smaller environmental footprint.
This means that every gram of feed matters more than ever before.
And that brings us back to the gut.
Because the difference between feed consumed and protein produced is ultimately determined by the efficiency of the digestive system.

The Future Begins in the Gut
For decades, poultry production focused on genetics, nutrition, and disease control.
The next frontier may be intestinal resilience.
Future improvements in productivity will likely come from better management of inflammation, enhanced barrier integrity, optimized microbiomes, and improved nutrient efficiency within the gastrointestinal tract.
The question may no longer be:

“How much feed did the bird consume?”

Instead, the more important question may be:
“How much of that feed actually became growth?”
The answer lies within the gut.
Not because it is merely another organ, but because it is the organ that determines how effectively all the others perform.
In an era of narrow margins, rising feed costs, heat stress, and antibiotic-free production, the healthiest gut may ultimately become the most valuable asset in the poultry house.