Agriculture isn't only crops. Standard farm drinking water typically carries 3–9 mg/L of dissolved oxygen, depending on source and delivery system — a level that has received far less scrutiny than water's other nutritional roles, despite water being arguably the most critical input in animal production. Nanobubble-oxygenated water can raise that to 25–120 mg/L, six to fifteen times standard levels, and stays elevated for days to weeks rather than off-gassing in minutes like conventional aeration.
This guide reviews the peer-reviewed evidence on what that actually does for broiler chickens, pigs, and cattle — including the studies that found no effect, which are just as informative as the ones that did. It also covers where the evidence stops and biologically-plausible extrapolation begins, since a fair amount of the commercial interest in this space (quail, turkeys, laying hens) currently runs ahead of dedicated species-specific trials.
Five partially independent mechanisms show up across the studies covered below, and none of them are species-specific — they're expected to apply broadly across monogastric and hindgut-fermenting animals alike.
Better oxygen supply to gut tissue supports nutrient absorption efficiency and tight junction integrity — the physical seal between gut cells that keeps pathogens and toxins out of circulation.
Multiple studies report upregulated antioxidant enzymes (superoxide dismutase, glutathione peroxidase) — lowering the metabolic cost an animal pays scavenging reactive oxygen species, energy that can go toward growth instead.
Shift toward Lactobacillus-dominant populations, associated with improved fermentation efficiency and reduced pathogen load in the gut.
Elevated IgG and IgM, increased lysozyme activity, and a shifted CD4⁺:CD8⁺ cell ratio — signatures of a more primed immune system, documented across multiple species.
Lower abdominal fat has shown up as a consistent, independently-measured signal, with implications for lean yield and metabolic health beyond simple weight gain.
Reduced prevalence of muscle myopathies (white striping) in treated birds — a meat-quality signal distinct from, and additional to, raw growth metrics.
Three controlled, peer-reviewed studies report significant improvements in feed conversion ratio (FCR) and body weight gain from oxygenated drinking water in broilers. Shin et al. (2016) — a three-arm RCT with proper replication — found FCR improved by up to 11.4%, body weight gain increased significantly, abdominal fat dropped, and IgG/IgM concentrations rose, all at P<0.05. Abdel-Baky et al. (2023) and El-Deeb et al. (2025), both three-arm Egyptian trials, independently replicated the body weight and FCR improvement alongside enhanced antioxidant capacity and (in El-Deeb's case) significantly improved antibody titres against Newcastle disease and avian influenza.
Khattak et al. (2025) is the largest and most rigorously powered study in this literature: 840 Ross 308 broilers, 12 replicate pens per treatment, at Scotland's Rural College. Under these commercially representative, well-optimised conditions — where both treatment groups already exceeded breed performance standards by 19–22% — there was no significant difference in FCR or final body weight between oxygenated and tap water groups. That's a real null result, not a discrepancy to explain away.
But the same study found significant improvements in feather condition score, hock burn prevalence (37.3% lesion-free vs. 12.3% in controls), breast cleanliness, abdominal fat (−12%), thigh yield (+2.6%), and white striping prevalence — plus differential gut microbiome signatures on metagenomic sequencing. The most defensible reading is a ceiling effect: under already-optimal husbandry with minimal headroom for further growth, raw growth metrics stop separating, while welfare and carcass-quality benefits — measured under the same optimal conditions — remain robust, independent signals of a real physiological effect. It also reframes the likely value proposition: the welfare and quality benefits may be more consistent across conditions than the growth benefit, which appears to depend on how oxygen-limited the baseline conditions already are.
Worth disclosing: one co-author on the Khattak study (R. Pearson) is affiliated with Oxcel, a commercial nanobubble water company referenced elsewhere in this review's commercial trial data. The study was still peer-reviewed and published in Poultry Science, and a null result on the primary growth endpoints is not the outcome a sponsor would prefer — which if anything supports the finding's credibility — but the affiliation is worth knowing.
Dairy cattle have no published study at all — a genuine, currently-unaddressed research gap, not a null result.
The mechanisms above aren't broiler-specific biology — gut epithelial oxygenation, antioxidant enzyme upregulation, and immune priming via the CD4:CD8 axis are shared across gallinaceous birds generally. That's a reasonable basis for extrapolation, but it remains an evidence-informed hypothesis, not a demonstrated result, for every species below.
Heart rates of 300–400bpm and mass-specific oxygen consumption 1.4–1.8× that of broilers, plus a 35–42 day market cycle that makes controlled trials fast and cheap to run. No published study exists — this is the single most commercially practical species for a bridging trial.
Same fast-growth, oxidative-stress profile as broilers, with breast myopathies (white striping, wooden breast) an even more severe commercial problem than in broilers — meaning the muscle-integrity signal from broiler trials has direct, high-value relevance here if it replicates.
Meaningfully different gut microbiome and caecal fermentation architecture compared to gallinaceous birds. Extrapolation here is more speculative — the antioxidant and pathogen-exclusion mechanisms likely still apply, but with less confidence than for quail or turkeys.
No study has directly tested oxygenated water in laying hens — but the welfare and physiological effects documented in broilers translate into outcomes that matter considerably more in an egg operation than in a 5–6 week broiler cycle, given a laying hen's 60–80 week production life.
Feather pecking and cannibalism are the leading non-infectious causes of mortality in cage-free flocks. The feather condition improvement Khattak et al. found in broilers — where it's a welfare metric, not a revenue driver — suggests a genuine physiological effect on skin and follicle health, not a management artefact.
Yolk PUFAs (including DHA/EPA in enriched eggs) are highly susceptible to oxidative degradation. The elevated antioxidant enzyme activity documented in broilers would be expected to reduce in vivo yolk lipid peroxidation — directly relevant to shelf life and premium egg product quality.
Fatty liver haemorrhagic syndrome is a leading cause of sudden death and production decline in laying flocks, especially cage-free systems in late lay. The −12% abdominal fat reduction seen in broilers has a direct, high-value parallel here if the mechanism holds.
This is the single highest-priority research gap identified in the underlying review: a dedicated RCT in laying hens measuring egg production rate, egg quality (shell strength, Haugh unit, yolk colour, oxidative stability), feather condition, and late-lay mortality over a full production cycle does not currently exist and would be a genuinely valuable contribution.
| Study | Species | FCR / BW improved? | Significance |
|---|---|---|---|
| Shin et al. 2016 | Broiler | Yes (FCR +11.4%) | P<0.05 |
| Abdel-Baky et al. 2023 | Broiler | Yes | P<0.05 |
| El-Deeb et al. 2025 | Broiler | Yes | P<0.01 |
| Khattak et al. 2025 | Broiler | No (welfare/carcass: yes) | Welfare P<0.05 |
| Nishikawa et al. 2013 | Mouse | Yes (+7.8% BW) | P<0.01 |
| Jung et al. 2012 (broiler) | Broiler | Not measured | Immunity P<0.05 |
| Jung et al. 2012 (pig) | Pig | Not measured | Immunity P<0.05 |
| Konaç et al. 2019 | Beef cattle | Trend only (7.18 vs. 7.26) | P>0.05 (NS) |
| Yapıcıer & Sa'atçı 2018 | Laying hen | Not measured | Disinfection only |
| Oxcel/SRUC commercial trials | Pig | Yes (reported, unpublished) | No stats disclosed |
NS = not statistically significant. BW = body weight. FCR = feed conversion ratio.
Shin, D-H., Moon, B-H., Moon, Y-S., et al. (2016). Effects of oxygenated or hydrogenated water on growth performance, blood parameters, and antioxidant enzyme activity of broiler chickens. Poultry Science, 95(11), 2679–2686.
doi.org/10.3382/ps/pew230Khattak, F., Galgano, S., Pearson, R., Houdijk, J.G.M., Short, F., & Leigh, A. (2025). Enhancing key broiler welfare indicators, meat quality, and gut microbiome composition using oxygen-enriched drinking water under commercially relevant housing conditions. Poultry Science, 104(10), 105550.
The largest, most rigorously powered study in this literature (n=840). See the disclosure note in Section 2 regarding a co-author's commercial affiliation.
doi.org/10.1016/j.psj.2025.105550Jung, B.G., Lee, J.A., Nam, K.W., & Lee, B.J. (2012). Oxygenated drinking water enhances immune activity in broiler chicks and increases survivability against Salmonella Gallinarum in experimentally infected broiler chicks. Journal of Veterinary Medical Science, 74(3), 341–346.
doi.org/10.1292/jvms.11-0316Jung, B.G., Lee, J.A., & Lee, B.J. (2012). Oxygenated drinking water enhances immune activity in pigs and increases immune responses of pigs during Salmonella Typhimurium infection. Journal of Veterinary Medical Science, 74(12), 1597–1599.
doi.org/10.1292/jvms.12-0051Abdel-Baky, T.I., Abdelmoez, W., Badr, J.M., & El-Shafei, A.A. (2023). Effects of oxygenated and magnetic water on growth performance, antioxidant enzymes activity and intestinal microbial load of broiler chicks. Egyptian Journal of Nutrition and Feeds, 26(3), 385–395.
No DOI found for this journal; linked to the verifiable manuscript instead.
researchgate.net/publication/377101588El-Deeb, A.M.A., Mohamed, H.S., Abdelrazik, S.G., Eid, K.M.A., & Bahnas, M.M. (2025). Effect of magnetic and oxygenated water on growth performance, antioxidant enzymes activity and intestinal microbial load of broiler chicks. SVU-International Journal of Agricultural Sciences, 7(3), 41–51.
No DOI found for this journal; linked to the publisher's own repository instead.
journals.ekb.eg (PDF)Nishikawa, R., Nagata, S., Taniguchi, S., Ueda, K., et al. (2013). Oxygen and air nanobubble water solution promote the growth of plants, fishes, and mice. PLOS ONE, 8(6), e65339.
doi.org/10.1371/journal.pone.0065339Konaç, V., Akbaş, A.A., & Saatcı, M. (2019). The effects of drinking water treated with energized oxygen on fattening performance in beef cattle. Harran University Journal of the Faculty of Veterinary Medicine, 8(2), 236–242.
doi.org/10.31196/huvfd.667782Yapıcıer, Ö.Ş., & Saatcı, M. (2018). Energized oxygen treatment in drinking water for laying hens: An alternative disinfectant. International Journal of Poultry Science, 17(12), 586–590.
doi.org/10.3923/ijps.2018.586.590Commercial trial reports (Oxcel/SRUC pig trials, UK Agri-Tech Centre coverage) are referenced in the sections above but are not included in this list as scientific citations — they are unpublished, commercially sponsored data requiring independent peer-reviewed verification, and are described as such throughout this page.
Inpelor provides independent, vendor-neutral assessment of whether the evidence base actually supports this for your species and production context.
Request a Consultation →