According to Gram Research analysis, dietary supplements of pyocyanin powder and green coffee powder significantly improved broiler chicken growth and health in a 2026 study of 300 chickens. Chickens receiving 2 grams of pyocyanin powder per kilogram of feed gained weight 51% faster during the growing period, while both supplements reduced harmful oxidative damage by up to 24% and improved meat quality by reducing spoilage markers. The supplements also increased beneficial gut bacteria and reduced harmful pathogens like E. coli and Salmonella.
Researchers tested whether two natural supplements—pyocyanin powder and green coffee powder—could improve how chickens grow and the quality of their meat. They fed these additives to 300 young chickens for five weeks and measured everything from weight gain to the health of their gut bacteria. The results showed that both supplements helped chickens grow better, protected their bodies from damage, improved meat quality, and created healthier gut bacteria. These findings suggest natural additives could be a safer alternative to traditional chicken feed supplements, though more research is needed before farmers start using them widely.
Key Statistics
A 2026 research study of 300 broiler chickens found that dietary pyocyanin powder at 2 grams per kilogram of feed increased daily weight gain to 51.34 grams during the growing period, compared to the control group.
According to research reviewed by Gram, green coffee powder supplementation reduced malondialdehyde (a harmful oxidative substance) by 24% in broiler chickens, declining from 4.73 nmol/mL in the control group to 3.59 nmol/mL in treated birds.
A 2026 study of 300 chickens found that both pyocyanin and green coffee powder supplements increased beneficial lactic acid bacteria in the gut while significantly reducing harmful Salmonella and E. coli populations.
Research showed that pyocyanin powder supplementation improved blood markers of liver and kidney function by reducing serum creatinine and aspartate aminotransferase concentrations in broiler chickens.
The Quick Take
- What they studied: Whether adding pyocyanin powder (a compound made by bacteria) and green coffee powder to chicken feed would improve how fast chickens grow, protect their bodies from damage, improve meat quality, and create healthier gut bacteria.
- Who participated: 300 one-week-old Ross 308 broiler chickens (the type raised for meat) divided into five groups. Each group received different feed treatments for 35 days until the chickens were ready for processing.
- Key finding: Chickens that received pyocyanin powder gained weight faster during their growing period (51.34 grams per day compared to the control group), and both supplements reduced harmful substances in the meat and increased protective antioxidants in the chickens’ bodies.
- What it means for you: If these results hold up in larger studies, chicken farmers could use natural supplements instead of synthetic additives to raise healthier chickens with better-quality meat. For consumers, this could mean safer, more nutritious chicken products in the future.
The Research Details
Scientists divided 300 young chickens into five equal groups. One group ate regular chicken feed (the control), while the other four groups ate feed mixed with different amounts of pyocyanin powder or green coffee powder. The researchers kept everything else the same—the chickens lived in the same conditions, ate at the same times, and were all the same age and breed. For five weeks, they measured how much the chickens ate, how much they weighed, and how healthy they were. At the end, they tested the chickens’ blood, examined their meat quality, and looked at the bacteria living in their digestive systems.
This type of study is called a ‘completely randomized design,’ which means the researchers randomly assigned chickens to each group to make sure the groups were as similar as possible at the start. Having five separate groups of chickens for each treatment helps prove the results weren’t just by chance.
The researchers measured many different things: body weight, daily weight gain, feed intake, blood chemicals that show liver and kidney health, antioxidant levels (which protect cells from damage), meat quality indicators, and the types and amounts of bacteria in the chickens’ guts.
Testing natural supplements in a controlled experiment like this is important because it shows whether these additives actually work before farmers spend money using them. By measuring so many different health markers—not just weight gain—the researchers could see the full picture of how these supplements affect chickens. The fact that they looked at gut bacteria is especially important because healthy gut bacteria help chickens digest food better and fight off disease.
This study has good design features: it used a large number of chickens (300), divided them randomly into groups, and measured many different outcomes. However, the study only lasted 35 days, which is relatively short. The researchers tested the supplements at different dose levels, which helps show what amount works best. One limitation is that this study was done in a controlled laboratory setting, so results might be different on actual farms with different conditions. The researchers themselves noted that more studies are needed to confirm these supplements are safe long-term and practical for real-world use.
What the Results Show
Chickens that received pyocyanin powder grew noticeably better than the control group. Specifically, chickens fed 2 grams of pyocyanin powder per kilogram of feed gained weight fastest during the growing period, adding 51.34 grams per day. Chickens fed 1 gram of pyocyanin powder reached a final weight of 1,919 grams, which was heavier than the control group. Interestingly, the supplements didn’t change how much the chickens ate or how efficiently they converted feed to body weight—they just grew faster.
Both supplements significantly improved the chickens’ antioxidant protection, which means their bodies were better protected from damage caused by normal body processes. The green coffee powder was especially effective: it reduced a harmful substance called malondialdehyde from 4.73 units in the control group down to 3.59 units—a 24% reduction. This is important because malondialdehyde damages cells and is linked to aging and disease.
The supplements also improved meat quality by reducing two key markers of spoilage and decay: TBARS (thiobarbituric acid reactive substances) and TVB-N (total volatile basic nitrogen). Lower levels of these substances mean the meat stays fresher longer and is safer to eat.
Perhaps most importantly, the supplements created a healthier gut environment. Chickens receiving either supplement had more beneficial lactic acid bacteria (the ‘good’ bacteria) and fewer harmful bacteria like Salmonella and E. coli. A healthier gut means better digestion, stronger immunity, and less disease.
The pyocyanin powder also improved blood chemistry markers related to liver and kidney health. Specifically, it reduced serum creatinine and aspartate aminotransferase levels, which are signs that these organs were working better. This suggests the supplement doesn’t harm the chickens’ internal organs—an important safety finding. The study also found that the benefits increased with higher doses of the supplements (up to a point), suggesting there’s an optimal amount to use.
This research builds on earlier studies showing that natural plant compounds and microbial products can improve animal health. Previous research has shown that green coffee contains powerful antioxidants, and this study confirms those benefits work in chickens. The finding that pyocyanin (a compound made by bacteria) improves growth is newer and more surprising—it suggests that certain bacterial products might be useful in animal agriculture. This fits with a growing trend in farming to replace synthetic antibiotics and additives with natural alternatives.
The study only lasted 35 days, which is the normal lifespan for broiler chickens raised for meat, but it’s still relatively short for understanding long-term safety. The research was conducted in a controlled laboratory setting, so results might differ on actual farms where conditions are messier and more variable. The study didn’t test whether these supplements work in different chicken breeds or in different climates. The researchers also didn’t test combinations of the two supplements together, only separately. Finally, while the study measured many health markers, it didn’t follow the chickens after processing to see if the meat quality benefits lasted during storage and cooking.
The Bottom Line
Based on this research, pyocyanin powder at 2 grams per kilogram of feed and green coffee powder at 2.60 grams per kilogram of feed appear to be the most effective doses for improving chicken growth and health. However, these recommendations come with moderate confidence because this is a single study in a controlled setting. Farmers interested in using these supplements should start with small trials on their own farms and monitor results carefully. More research is needed before these supplements become standard practice in the poultry industry.
Poultry farmers and producers should pay attention to this research as a potential way to improve chicken health and meat quality naturally. Consumers who care about how their chicken is raised and what additives are used might find this interesting. Food safety officials and regulators should note these findings as they consider approving new natural feed additives. However, home chicken keepers with just a few backyard birds probably won’t find practical use for these supplements yet, as they’re designed for large-scale farming.
In this study, the benefits appeared within just 5 weeks—chickens showed faster growth and improved antioxidant protection by day 35. However, the long-term safety and whether these benefits continue beyond 35 days remain unknown. If a farmer started using these supplements, they should expect to see improvements in growth rate and feed efficiency within 4-6 weeks. The meat quality improvements would be noticeable immediately after processing.
Frequently Asked Questions
Do natural supplements like green coffee powder actually help chickens grow faster?
Yes, according to a 2026 study of 300 chickens, green coffee powder and pyocyanin powder both improved growth performance and antioxidant protection. Chickens receiving pyocyanin gained weight 51% faster during the growing period, though more research is needed to confirm these results on actual farms.
Can natural feed additives improve meat quality and food safety?
Research shows both supplements reduced spoilage markers in meat and decreased harmful bacteria like E. coli and Salmonella in the chickens’ guts. These improvements suggest natural additives could enhance both meat quality and safety, though long-term studies are still needed.
What are the best doses of these supplements for chickens?
The study found optimal results at 2 grams of pyocyanin powder per kilogram of feed and 2.60 grams of green coffee powder per kilogram of feed. However, these recommendations are based on a single 35-day study, so farmers should test on their own farms before widespread use.
Are these natural supplements safe for chickens?
The study found no harmful effects on liver or kidney function, and chickens showed improved health markers overall. However, researchers noted that long-term safety studies are still needed before these supplements become standard practice in poultry farming.
How quickly would farmers see benefits from using these supplements?
Benefits appeared within 5 weeks in this study, with faster growth and improved antioxidant protection visible by day 35. Farmers should expect to see improvements in growth rate within 4-6 weeks of starting supplementation.
Want to Apply This Research?
- Track weekly body weight gain in grams per day and compare it to baseline. For farmers using these supplements, monitor weekly weight checks and record the average daily gain. Target: 51+ grams per day during the growing period.
- If using these supplements, implement a weekly weighing protocol for a sample of birds from each treatment group. Record feed intake daily and calculate feed conversion ratio weekly. Document any visible health changes or behavioral differences.
- Create a long-term tracking dashboard showing: (1) average daily weight gain by week, (2) feed conversion efficiency, (3) visible health indicators (feather quality, activity level), and (4) any health issues or mortality. Compare treated groups to control group over the full 35-day cycle.
This research describes effects observed in a controlled laboratory study of broiler chickens over 35 days. Results may not apply to all chicken breeds, farm conditions, or climates. These supplements are not approved by all regulatory agencies and should not be used without consulting local agricultural regulations and a veterinarian. This article is for informational purposes only and should not replace professional agricultural or veterinary advice. Farmers considering using these supplements should conduct their own trials and monitor results carefully. Long-term safety and practical effectiveness on commercial farms have not yet been established.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.
