According to Gram Research analysis, adding pine charcoal (biochar) to beef cattle feed at doses from 0.8% to 2.4% of daily intake did not improve how much cattle ate or how well they digested their food. In fact, higher biochar doses showed a tendency to reduce food intake, with cattle receiving 2.4% biochar consuming 3.53 kilograms of digestible matter daily compared to 4.29 kilograms for cattle receiving no biochar.
Researchers tested whether adding pine charcoal, called biochar, to the diet of beef cattle would help them eat more food and digest it better. Four steers were fed different amounts of biochar mixed with their regular hay diet over several weeks. The study found that biochar didn’t significantly improve how much the cattle ate or how well they digested their food. In fact, higher amounts of biochar seemed to slightly reduce how much food the cattle consumed. While the results weren’t dramatic, they suggest that very high doses of biochar might not be practical for cattle farming.
Key Statistics
A 2026 research study of four beef steers found that pinewood biochar supplementation at 0.8% to 2.4% of daily forage intake did not significantly affect diet digestibility, which averaged 64.6% across all treatment groups.
Beef steers receiving the highest biochar dose (2.4%) consumed 3.53 kilograms of total digestible organic matter daily, compared to 4.29 kilograms for control steers receiving no biochar, according to a 2026 feeding trial.
A 2026 study of four ruminally cannulated steers showed that forage organic matter intake decreased from 5.23 kilograms per day in control cattle to 4.54 kilograms per day in cattle receiving 2.4% biochar supplementation.
The Quick Take
- What they studied: Whether adding charcoal made from burned wood (biochar) to cattle feed would help them eat more food and digest it better.
- Who participated: Four beef steers, which are young male cattle. Each steer was tested with four different treatment options over a 14-day period.
- Key finding: Adding biochar at doses from 0.8% to 2.4% of the cattle’s daily food intake did not significantly improve how much they ate or how well they digested their food. Higher doses actually showed a slight tendency to reduce food intake.
- What it means for you: If you raise cattle, adding biochar to their feed probably won’t improve their nutrition or digestion. The study suggests that moderate to high doses might even reduce how much cattle eat, which could be a practical concern for farmers.
The Research Details
This was a controlled feeding trial using four beef steers with special tubes inserted in their stomachs (called rumen cannulas) to allow researchers to collect samples. The study used a Latin square design, which means each steer received all four different treatments over time in a balanced way. Each treatment period lasted 14 days: 8 days for the cattle to adjust to the new diet, then 5 days of careful measurement of food intake and digestibility, and finally 1 day of rumen fluid sampling.
The four treatments were: no biochar added (control), or biochar added at 0.8%, 1.6%, or 2.4% of the amount of hay the cattle had eaten in the previous 3 days. All cattle had unlimited access to hay and water, and received the biochar mixed with cottonseed meal once per day.
Researchers measured how much food the cattle ate, how much they digested, and the composition of their rumen fluid (the liquid in their stomach where digestion begins). They used statistical tests to look for linear trends (where effects increase or decrease steadily) and quadratic effects (where effects change in a curved pattern).
This research approach is important because it uses a controlled, repeated-measures design that can detect small changes in how cattle process food. By having each steer receive all treatments, researchers can account for differences between individual animals. The rumen sampling allows direct observation of digestive processes, not just what goes in and comes out.
This study has some important limitations. The sample size is very small (only 4 steers), which limits how confident we can be in the results. The researchers themselves noted methodological limitations that affected their ability to draw definitive conclusions. The study was published in a peer-reviewed journal, which is positive, but the small sample size means results should be considered preliminary and would need confirmation in larger studies before making farming decisions based on them.
What the Results Show
The main finding was that biochar did not significantly improve how much food the cattle ate or how well they digested it. When researchers looked at forage organic matter intake (the amount of plant material the cattle consumed), there was only a weak tendency for biochar to reduce intake as doses increased. Control steers ate 5.23 kilograms per day, while steers receiving the highest biochar dose (2.4%) ate 4.54 kilograms per day.
For total digestible organic matter intake (the amount of digestible plant material consumed), control steers consumed the most at 4.29 kilograms per day, while steers receiving 2.4% biochar consumed the least at 3.53 kilograms per day. However, these differences were only statistical tendencies, not clear-cut results.
When researchers measured how well the cattle actually digested their food (organic matter digestibility), they found no significant differences between treatments. Digestibility averaged 64.6% across all groups, meaning the cattle broke down and absorbed about two-thirds of the plant material they consumed, regardless of biochar treatment.
The researchers noted that while the results weren’t statistically significant, the pattern suggested that moderate (1.6%) and high (2.4%) doses of biochar might have practical concerns for cattle farming, as they appeared to reduce food intake.
The study measured rumen fluid composition and other digestive parameters, but found no significant effects of biochar on these measures either. This suggests that biochar did not change the basic chemistry or microbial environment of the cattle’s digestive system.
This is one of the first studies to examine biochar supplementation in beef cattle. Previous research has shown that biochar can improve soil health and help sequester carbon when mixed with manure, but little was known about its effects when fed directly to cattle. The findings suggest that biochar’s benefits for agriculture may be limited to its soil application rather than direct animal consumption.
The study had several important limitations. First, only four steers were used, which is a very small sample size and limits how confident we can be in the results. Second, the researchers noted methodological limitations that affected their ability to draw definitive conclusions, though they didn’t specify exactly what these were. Third, the study only lasted 14 days per treatment, which might not be long enough to see all effects. Fourth, the results were mostly statistical tendencies rather than clear, significant findings, meaning they could easily be due to chance. Finally, the study used only one type of biochar (pinewood), so results might differ with other biochar sources.
The Bottom Line
Based on this research, there is low confidence that adding biochar to beef cattle feed will improve their nutrition or digestion. The evidence suggests that biochar supplementation at doses from 0.8% to 2.4% of daily intake is not beneficial and may slightly reduce food intake at higher doses. Farmers should not expect improvements in cattle performance from biochar supplementation based on current evidence.
Cattle farmers and ranchers considering biochar as a feed supplement should be aware that this study found no benefits. Researchers interested in sustainable agriculture and carbon sequestration may still be interested in biochar’s soil benefits, but not for direct animal feeding. This research is less relevant for people who don’t raise cattle.
This study measured effects over just 14 days, so it’s unclear whether longer-term feeding might produce different results. Any farmer considering biochar supplementation should expect to see effects within weeks if they were going to occur, but this study suggests they probably won’t.
Frequently Asked Questions
Does biochar improve digestion in cattle?
No, a 2026 study found that biochar supplementation at 0.8% to 2.4% of daily intake did not significantly affect digestibility in beef steers. Organic matter digestibility averaged 64.6% across all treatment groups, regardless of biochar inclusion.
What happens to cattle feed intake when you add biochar?
Adding biochar tends to reduce feed intake, especially at higher doses. Steers receiving 2.4% biochar consumed 4.54 kilograms of forage daily versus 5.23 kilograms for control steers, according to a 2026 feeding trial.
Is biochar safe to feed to beef cattle?
The study found no harmful effects from biochar at the tested doses (0.8% to 2.4% of intake), but it also found no benefits. The researchers noted that moderate to high doses may have practical concerns due to reduced feed intake.
Can biochar help with sustainable cattle farming?
While biochar can improve soil health and sequester carbon when mixed with manure, feeding it directly to cattle does not appear to provide digestive benefits. Its sustainability value may be limited to soil application rather than animal supplementation.
How much biochar should I feed my cattle?
Based on current research, biochar supplementation is not recommended for beef cattle. A 2026 study found no digestive benefits at any tested dose (0.8% to 2.4% of daily intake), and higher doses reduced feed intake.
Want to Apply This Research?
- If a cattle farmer wanted to test biochar supplementation on their own animals, they could track daily feed intake (measured in kilograms), body weight gain per week, and feed efficiency (weight gained per kilogram of feed consumed) using a simple spreadsheet or farm management app.
- A farmer could implement a small pilot test by feeding biochar to a small group of cattle while keeping a control group without biochar, measuring their feed intake and weight gain over 4 to 8 weeks to see if results differ from this published study.
- Long-term monitoring would involve tracking monthly body weight, feed consumption, and overall herd health metrics. If biochar were being used, farmers should compare these metrics to a control group not receiving biochar to determine if there are any practical benefits or drawbacks.
This research is preliminary and based on a small sample size of four steers. The findings should not be used as the sole basis for feeding decisions on commercial cattle operations. Farmers considering any feed supplement should consult with a veterinarian or animal nutritionist and conduct their own trials before implementing changes. This study does not constitute veterinary or nutritional advice. Individual cattle may respond differently to supplements based on age, breed, health status, and other factors not examined in this research.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.