As someone who has spent years working in the animal feed industry, I have witnessed firsthand the growing pressure to find sustainable animal feed ingredients that are both cost-effective and environmentally responsible. Rising grain prices, supply chain disruptions, and increasing consumer demand for antibiotic-free animal products have pushed producers to explore unconventional feed sources. One option that has consistently caught my attention—and that of many nutritionists I respect—is wood powder for animal feed.
In this article, I will share what I have learned about wood-derived feed ingredients, drawing on decades of research and recent scientific developments. Whether you are a livestock producer, feed manufacturer, or nutritionist, I believe this information will help you make informed decisions about incorporating wood powder as a feed ingredient into your feeding programs.
What Exactly Is Wood Powder for Animal Feed?
Wood powder—also known as wood flour—is a finely pulverised product made from dried wood. In the context of animal nutrition, it is not the coarse sawdust you might find on a workshop floor. Rather, it is processed to specific particle sizes and sometimes treated or fermented to enhance digestibility.
The concept of using wood in animal diets is not new. During times of grain scarcity—as far back as the early 1900s—farmers added finely ground wood to animal fodder to conserve cereals for human consumption. Today, however, we have the science and technology to do this far more effectively.
The Science Behind Wood-Derived Feed Ingredients
What makes wood powder valuable as a feed additive? The answer lies in its composition. Wood is primarily made up of cellulose and hemicellulose, which together account for about 70% of the dry weight of shrubs and trees. These are complex carbohydrates that ruminant animals—with the help of microorganisms in their rumen—can break down and utilise as energy sources.
However, the cellulose in woody plants is not always readily available to animals because of its crystalline structure and the presence of lignin. This is where modern processing techniques come into play. Research has shown that micronising wood powder to very fine particle sizes—around 52 micrometres, for example—can significantly improve its fermentability. Studies have demonstrated that micronised wood powder can be digested to produce volatile fatty acids through ruminal fermentation, making it a viable energy source for beef cattle.
Applications Across Different Animal Species
Ruminants: Cattle and Sheep
Ruminants are the most obvious candidates for wood-derived feed ingredients. Their digestive systems are uniquely adapted to break down fibrous plant material. Studies have shown that wood molasses and other hydrolytic wood products are well digested by cattle. Wood-based feed has been evaluated as a roughage substitute in beef cattle finishing rations, with oak sawdust successfully used at levels up to 15% of the ration.
In fact, cellulose pulps and wood waste have been fed as maintenance rations to cattle and horses during national emergencies. More recently, researchers have developed cellulosic concentrated feed for dairy cattle by micro-pulverising Japanese cedar, achieving saccharification efficiency exceeding 80% based on cellulose.
One particularly fascinating development is the use of wood-derived products to improve feed efficiency and gut health. Wood lignans—natural polyphenolic compounds found in certain tree species—have demonstrated remarkable anti-inflammatory and antioxidative properties. Supplementation with wood lignans has been shown to improve protein digestibility by 2.4 percentage points and mineral digestibility (calcium by 3.1 points, phosphorus by 1.4 points). Wood lignans are increasingly recognised as a promising alternative to antibiotic growth promoters in livestock production.
Poultry: Broilers and Layers
The poultry sector has been particularly active in exploring wood powder applications. A study published in British Poultry Science examined the effects of acetylated wood powder as a feed additive in broiler chickens. The researchers found that feeding acetylated wood powder regulated amino acid utilisation in the liver and helped retard the post-mortem degradation of inosine 5′-monophosphate—a compound that contributes to meat taste.
Wood vinegar and oak acorn supplementation have also been evaluated as alternatives to antibiotic growth promoters in broiler chickens. The results suggest that wood-derived products can support intestinal health and growth performance without relying on antibiotics. Fermented bamboo powder has also shown promise, with studies demonstrating significant enhancement in growth performance and intestinal health in broiler chickens.
Pigs: Weaners and Growers
The swine industry is also taking notice. A 2025 study evaluated a wood-based feed supplement as an alternative to zinc oxide in weaned piglets—a particularly critical period when pigs are vulnerable to digestive upsets. The supplement showed promise in promoting feed intake and exerting moderate anti-inflammatory activity.
Another recent study investigated replacing wheat bran with poplar wood composite fibre in growing pig diets. The results were encouraging: the wood-based fibre did not negatively affect growth performance, nutrient digestibility, or immune function. Instead, it helped regulate nitrogen metabolism and enhanced antioxidant capacity. Gut microbiota analysis revealed significant increases in fibre-degrading bacterial populations.
Companion Animals: Dogs
Even the pet food industry has embraced wood-derived ingredients. USDA researchers found that carbohydrates extracted from pine wood chips—specifically galactoglucomannan oligosaccharides (GGMOs)—can benefit dogs’ digestive system health. Increasing the percentage of pine GGMOs in kibble was associated with significant increases in populations of beneficial Bifidobacterium bacteria.
Why Choose Wood Powder for Animal Feed?
From my perspective, the advantages of wood powder as a feed ingredient are compelling:
Sustainability: Wood is a renewable resource. Using wood residues that would otherwise go to waste reduces environmental impact and supports forest management. Lignocellulosic biomass such as wood is increasingly recognised as a promising low-opportunity-cost feed that does not compete with human-edible food.
Cost-effectiveness: As grain prices continue to rise, wood-derived ingredients offer a more affordable alternative for providing dietary fibre and energy.
Antibiotic reduction: Wood lignans and other bioactive compounds support gut health naturally, reducing the need for antibiotic growth promoters.
Research-backed: Decades of research—from the USDA Forest Products Laboratory to universities worldwide—have established the safety and efficacy of wood-derived feed ingredients.
Why Choose Wood Powder for Animal Feed?
Of course, not all wood powder is suitable for animal feed. The wood must be from safe species—walnut, for example, should be avoided. It must also be processed to the appropriate particle size and free from contaminants. Treated wood or wood that has been exposed to wood protection products is strictly prohibited in compound feeds.
Proper processing—whether through micronisation, fermentation, or steam explosion—is essential to enhance digestibility. Fermentation, in particular, adds value by acting as a probiotic that naturally boosts the immune system of farm animals. Steamed wood and xylo-oligosaccharides have been shown to enhance fermentability and are associated with distinct microbial community structures.
Final Thoughts
After reviewing the evidence, I am convinced that wood powder for animal feed represents a significant opportunity for the livestock industry. It addresses multiple challenges simultaneously: reducing feed costs, improving animal health, supporting sustainability goals, and reducing reliance on antibiotics.
The research is there. The technology is available. And the benefits are real. For producers willing to explore this option, the potential rewards are substantial.
Frequently Asked Questions
1. Is wood powder safe for animal consumption?
Yes, when properly processed from safe wood species and free from contaminants. Wood-derived products tested at 30% of the ration were non-toxic to sheep for five years and to ewes through two reproductive cycles.
2. Which animals can eat wood powder?
Ruminants (cattle, sheep, goats) are the primary candidates due to their ability to digest cellulose. However, research has also shown benefits in poultry, pigs, and even dogs.
3. What is the recommended inclusion rate?
Inclusion rates vary by species and product type. Broiler studies have used up to 30 g/kg, while pig studies have used 2% replacement of wheat bran.
4. Does wood powder provide nutritional value?
Yes. It provides dietary fibre and, when properly processed, can serve as a source of metabolizable energy. Wood lignans also offer anti-inflammatory and antioxidative benefits.
5. Can wood powder replace grain in animal diets?
It can partially replace grain as a fibre and energy source, particularly in ruminants. However, it should be viewed as a supplement or partial replacement rather than a complete substitute.
6. How is wood powder processed for animal feed?
Processing typically involves drying, pulverising to fine particle sizes (sometimes as small as 52 μm), and may include fermentation, steam explosion, or chemical treatment to enhance digestibility.
7. Is fermented wood powder better than untreated wood powder?
Fermentation adds probiotic benefits and can boost the immune system of animals. It also enhances the digestibility of wood fibre. Fermented bamboo powder has shown significant benefits in both poultry and swine studies.
8. What wood species are safe for animal feed?
Most wood species are safe except walnut. Pine, cedar, poplar, and bamboo have all been studied and found effective.
9. Is wood powder regulated as a feed ingredient?
Yes. In many jurisdictions, wood-derived feed ingredients must meet safety and quality standards. The Association of American Feed Control Officials (AAFCO) maintains standards for safety and quality.
10. Can wood powder help reduce antibiotic use in animal production?
Yes. Wood lignans and other bioactive compounds support gut health naturally, offering an alternative to antibiotic growth promoters.
11. Where can I source high-quality wood powder for animal feed?
Huaxin provides premium wood powder products manufactured to precise specifications for the animal feed industry. Our products are processed from carefully selected wood species and quality-tested to ensure safety and performance.
Ready to Explore Wood Powder for Your Operation?
At Huaxin, we understand that every livestock operation has unique nutritional requirements. That is why we offer customised wood powder solutions tailored to your specific needs—whether you are formulating feed for cattle, poultry, pigs, or companion animals.
Contact us today to discuss your requirements, request product samples, or receive a free consultation on incorporating wood powder into your feeding program.
