Sodium pentaborate pentahydrate, a specific form of boron supplement, strengthens bones in chickens with skeletal problems better than boric acid, according to Gram Research analysis of a 2026 study with 360 broiler chickens. Higher boron doses produced progressively stronger bones, with the boron form also activating more bone-building genes in affected birds. This discovery suggests farmers could reduce skeletal disease in fast-growing chickens by using this particular boron supplement.
Chickens bred to grow very fast often develop weak bones, a condition called tibial dyschondroplasia that costs the poultry industry millions of dollars. Researchers tested whether adding boron, a mineral found in soil and plants, could help fix this problem. They compared two different boron supplements in chickens with weak bones caused by manganese deficiency. The results showed that sodium pentaborate pentahydrate, one type of boron supplement, worked better than boric acid at strengthening bones and activating the genes that build bone tissue. This discovery could help farmers raise healthier chickens more efficiently.
Key Statistics
A 2026 study of 360 broiler chickens found that sodium pentaborate pentahydrate increased bone-building protein osteocalcin levels significantly more than boric acid in chickens with weak bones, with a p-value of 0.012 indicating strong statistical significance.
Boron supplementation improved tibial bone mineral density and content in a dose-dependent manner in the 360-chicken study, meaning higher boron doses produced progressively stronger bones with p-values less than 0.05.
In 360 broiler chickens with induced skeletal problems, sodium pentaborate pentahydrate elevated osteoprotegerin levels markedly in the high-dose group with a p-value less than 0.001, while reducing inflammatory proteins that damage bone tissue.
Chickens with manganese deficiency-induced weak bones showed decreased body weight, feed intake, and carcass weight while experiencing increased feed conversion ratio in the 360-bird study, with all differences reaching statistical significance at p less than 0.05.
The Quick Take
- What they studied: Whether two different forms of boron supplements could strengthen bones in chickens that develop weak bones due to being bred for rapid growth and having low manganese levels.
- Who participated: 360 young broiler chickens (Ross 308 breed) divided into 12 groups. Some chickens had normal bones, while others were given a manganese-deficient diet to develop weak bones naturally. Each group received different boron supplements at different doses.
- Key finding: Sodium pentaborate pentahydrate, a specific boron compound, improved bone strength more effectively than boric acid. The higher the boron dose, the denser and stronger the bones became. This boron form also activated more bone-building genes in chickens with weak bones.
- What it means for you: If you raise chickens or work in poultry farming, this research suggests using sodium pentaborate pentahydrate as a boron supplement could reduce skeletal problems and improve bird health. However, this study was done in chickens, so results may not directly apply to other animals or humans. Consult with a veterinarian before changing feed supplements.
The Research Details
Researchers used a carefully controlled experiment with 360 young broiler chickens divided into 12 different groups. Each group received different combinations of treatments: some chickens had normal nutrition while others had low manganese to trigger weak bones naturally. The chickens also received one of two boron supplements (boric acid or sodium pentaborate pentahydrate) at three different dose levels (none, medium, or high). The researchers measured bone strength, bone mineral content, bone structure under a microscope, and the activity of genes involved in bone building. They tracked how much the chickens ate, how much they weighed, and how efficiently they converted feed into body weight.
This research design is important because it mimics real-world conditions where chickens bred for fast growth naturally develop weak bones. By testing two different boron forms at multiple doses, the researchers could determine which supplement works best and at what amount. The study also measured both physical bone changes and molecular changes (gene activity), which helps explain how boron actually strengthens bones at the cellular level.
The study used a large sample size (360 birds) with multiple replicates, meaning each treatment was tested on several groups of birds to ensure results were consistent. The researchers confirmed weak bones developed as expected through both visual inspection and microscopic examination. They measured multiple outcomes (bone density, mineral content, gene expression, and growth performance) rather than relying on a single measurement. The study was published in a peer-reviewed veterinary journal, meaning other experts reviewed the methods and results before publication.
What the Results Show
Chickens with weak bones that received boron supplements showed significant improvements in bone strength and mineral content. The improvement increased with higher boron doses, meaning more boron produced stronger bones. Sodium pentaborate pentahydrate worked better than boric acid for activating bone-building genes. In chickens with weak bones receiving high-dose sodium pentaborate pentahydrate, a bone-building protein called osteocalcin increased significantly compared to those receiving boric acid. The boron form also affected how much boron and calcium accumulated in the bones, with sodium pentaborate pentahydrate producing better mineral distribution.
Weak bones caused by manganese deficiency reduced how much chickens ate, how much they weighed, and how efficiently they converted feed into body weight. Boron supplementation partially reversed these negative effects. In chickens with weak bones, sodium pentaborate pentahydrate increased levels of osteoprotegerin, a protein that protects bone structure. This same boron form reduced levels of inflammatory proteins that damage bone tissue. The boron supplements also influenced how much boron accumulated in the blood and bones, with sodium pentaborate pentahydrate producing different patterns than boric acid.
Previous research has shown that boron plays a role in bone health in various animals, but most studies tested boron in normal conditions. This research is notable because it specifically tested boron in chickens with induced skeletal problems, which is more relevant to real poultry farming. The finding that different boron chemical forms produce different results is new and suggests that how boron is delivered matters as much as how much is given. Earlier studies suggested boron helps bone mineralization, and this research confirms that finding while identifying which boron form works best.
This study was conducted only in chickens, so results may not apply to other animals or humans. The weak bones were induced by manganese deficiency, which is one cause of skeletal problems in chickens but not the only cause. The study did not test boron supplementation in chickens with normal manganese levels, so it is unclear whether boron would help in that situation. The research measured short-term effects during the growth period but did not follow chickens into adulthood to see if benefits lasted. Economic costs of using different boron supplements were not evaluated.
The Bottom Line
For poultry farmers dealing with skeletal problems in fast-growing chickens, sodium pentaborate pentahydrate appears to be a more effective boron supplement than boric acid for strengthening bones. A medium to high boron dose (4.37 to 8.74 milligrams per kilogram of feed) showed the best results. However, this recommendation is based on one study in chickens with manganese deficiency, so consult with a veterinary nutritionist before implementing changes. The evidence is moderately strong for this specific scenario but limited for other situations.
Poultry farmers and producers who experience skeletal problems in broiler chickens should pay attention to this research. Veterinarians and nutritionists working with poultry operations may find this useful for developing feed strategies. This research is less relevant for people raising backyard chickens or for other livestock producers, though the general principles about boron and bone health may apply. This study does not provide direct guidance for human nutrition or health.
In the chickens studied, boron supplementation improved bone strength within the 6 to 7 week growth period typical for broiler chickens. Farmers implementing this strategy would likely see improvements in skeletal health and reduced lameness within a few weeks of changing feed. However, the study did not measure how long benefits persist after supplementation stops.
Frequently Asked Questions
What is tibial dyschondroplasia in chickens and why does it happen?
Tibial dyschondroplasia is a bone disease where the leg bones fail to develop properly, causing lameness and weakness. It occurs in chickens bred to grow extremely fast because their bones cannot keep up with rapid muscle growth. Manganese deficiency makes the problem worse.
Can boron supplements actually fix weak bones in chickens?
Boron supplements can significantly improve bone strength and mineral content in chickens with weak bones. Sodium pentaborate pentahydrate worked better than boric acid in this study, with higher doses producing stronger bones. However, boron works best when combined with adequate manganese and other minerals.
How much boron should I add to chicken feed?
The study tested 4.37 to 8.74 milligrams of elemental boron per kilogram of feed and found both doses improved bone strength, with higher doses showing better results. Consult a veterinary nutritionist to determine the right dose for your specific flock and feed formulation.
Is sodium pentaborate pentahydrate better than boric acid for chickens?
Yes, according to this study, sodium pentaborate pentahydrate produced better results than boric acid for strengthening bones and activating bone-building genes in chickens with skeletal problems. The boron form matters as much as the amount given.
How quickly will I see improvements if I use boron supplements?
The chickens in this study showed measurable bone improvements within their 6 to 7 week growth period. Farmers would likely observe reduced lameness and skeletal problems within a few weeks of implementing boron supplementation at the recommended dose.
Want to Apply This Research?
- If managing a poultry operation, track the percentage of birds showing signs of skeletal problems (lameness, inability to walk normally) weekly. Compare this metric before and after implementing sodium pentaborate pentahydrate supplementation at the recommended dose.
- For poultry farmers using a farm management app, add a reminder to adjust feed formulation to include sodium pentaborate pentahydrate at 4.37 to 8.74 milligrams per kilogram. Log the specific boron source and dose used, then monitor flock health outcomes over the growth period.
- Track bird mobility scores, lameness incidents, and final carcass weight weekly. Compare these metrics across flocks receiving different boron supplements. Document any changes in feed intake or growth rate to assess overall effectiveness and cost-benefit of the supplementation strategy.
This research was conducted in chickens with specific nutritional deficiencies and may not apply to other animals or humans. The findings relate to poultry production and skeletal health in birds. Before implementing any changes to animal feed or supplements, consult with a veterinarian or animal nutritionist familiar with your specific operation. This article summarizes research findings and does not constitute veterinary or nutritional advice. Individual results may vary based on genetics, environment, and overall management practices.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.