LithoNutri™ — calcium from the sea.
Bioavailable marine calcium. A long-lasting natural buffer.
A 100% natural bio-mineral complex of Lithothamnium calcareum — a red calcareous marine algae carrying highly bioavailable calcium, magnesium and 70+ trace elements in a porous, organic-bound matrix. A long-lasting rumen buffer for dairy, beef and small ruminants that rivals sodium bicarbonate at roughly a third of the dose.
Why marine calcium.
LithoNutri™ is harvested from Lithothamnium calcareum in the Brazilian equatorial region, where high luminosity and balanced water temperature drive fast algae growth and fragmentation. Its skeleton is a vegetal carbonate — calcium and magnesium bound to organic carbon in the algae's cell walls — with a honeycomb porosity that gives a specific surface of ~74 m²/g. That structure dissolves and releases its minerals far more readily than mined limestone, and buffers acid slowly and continuously rather than all at once.
Bioavailable calcium
Porous, organic-bound calcium and magnesium dissociates quickly — supporting calcium supply and acid-base balance through lactation.
Long-lasting buffer
Biogenic carbonates buffer the rumen slowly and continuously — controlling pH, reducing SARA-related symptoms, and out-performing sodium bicarbonate at under half the dose.
70+ trace elements
Beyond Ca and Mg, the matrix carries 70+ naturally-occurring bioavailable trace minerals plus amino acids and polysaccharides — whole-matrix mineral nutrition.
Prebiotic & gut health
Acts as a prebiotic — antioxidative, pH-controlling, and synergistic with probiotics and yeast — with mycotoxin-binding activity. Natural, easy to apply, no residual effect.
The evidence — dairy, beef and small ruminants.
LithoNutri™ (and the Lithothamnium source behind it) has been evaluated in university and field trials spanning dairy cows, beef cattle and sheep. Headline outcomes are shown below, each tied to its study.
Dairy cows
Vieira (2022) · Cruywagen (2015)- +9.7% milk fat; +6.16% fat-corrected milk (+2.66 L)
- Feed efficiency higher (P<0.01); 6.73% less fecal starch
- Cruywagen: 31.8 kg/d milk vs 27.6 control, 29.1 bicarbonate
- Stable rumen & fecal pH — long-lasting buffering effect
Beef cattle
JBS Quality Beacon · 2016- Semi-feedlot, 1.2% inclusion (72 g/head/day)
- ADG +6.47% (0.872 vs 0.819 kg/day)
- Carcass yield +1.5%; quality bonus +34%
- Better carcass fat cover and meat quality
Dairy — LithoNutri™ vs sodium bicarbonate
Vieira et al. (2022), Federal University of Pelotas · 36 Holstein cows · LithoNutri 102 g vs bicarbonate 280 g/cow/day
| Parameter | LithoNutri™ | Bicarbonate | Δ |
|---|---|---|---|
| Milk fat (%) | 4.17 | 3.80 | +9.7% |
| Fat-corrected milk (L/day) | 40.11 | 37.78 | +6.16% |
| Faecal pH | 6.18ᵃ | 6.11ᵇ | higher |
| Rumen-to-faeces pH gap | 0.52 | 0.69 | narrower |
| Energy-corrected milk (L/day) | 43.25 | 41.01 | +5.46% |
| Feed efficiency (fat-corr.) | 1.59 | 1.48 | P<0.01 |
| Feed efficiency (energy-corr.) | 1.71 | 1.62 | P<0.01 |
| Fecal starch (% of 29.28% dietary starch) | 2.79 | 2.98 | −6.73% |
Sources: Vieira et al. (2022), Federal University of Pelotas; Cruywagen et al. (2015); Durmic et al. (2014); JBS Quality Beacon semi-feedlot field results, Gauchinha Farm (2016). Outcomes vary by diet, dose and animal standard; figures are illustrative of trial cohorts, not guarantees.
Application & Dosing.
LithoNutri™ is applied across dairy, beef and small-ruminant diets. It is compatible with essential oils, probiotics and monensin, and is widely used in "buffering mixtures" at feed mills and on farm. KYNAD's technical team tunes inclusion to species, stage and the calcium/buffering balance of the full diet.
Ruminants
A natural rumen buffer for dairy and beef — controlling pH, reducing SARA symptoms, and lifting milk and carcass performance.
Specifications.
Confirmed composition and functional attributes are shown below. Certificate of analysis, full micro-mineral profile and packaging detail are available on request.
| Parameter | LithoNutri™ |
|---|---|
| Portfolio pillar | Mineral Nutrition |
| Category | Marine calcium & natural buffer |
| Source | Lithothamnium calcareum — red calcareous marine algae (Brazilian equatorial region) |
| Origin | 100% natural · vegetal/marine carbonate bound to organic carbon |
| Calcium | min. 320 g/kg (32%) — batch 128LPO: 327.4 g/kg |
| Mineral matter | min. 920 g/kg |
| Moisture | max. 20 g/kg |
| Residue in HCl | max. 40 g/kg |
| pH | 8.18 |
| Magnesium | min. 30 g/kg (3%) — batch 128LPO: 35.1 g/kg |
| Trace elements | 70+ naturally-occurring, bioavailable |
| Organic fraction | Amino acids (≈18), polysaccharides, biogenic carbonates (<0.45% amino acids) |
| Specific surface | ~74 m²/g (high porosity) — supplier-stated |
| Granulometry | 75% through 300 µm (50 mesh) · 25% through 44 µm (325 mesh) |
| Bulk density | 1.20 g/cm³ |
| Packaging | 25 kg bags · 1,200 kg big bag |
| Functional roles | Calcium source · rumen buffer · prebiotic · mycotoxin binder |
| Compatibility | Essential oils, probiotics, monensin |
| Forms | Powder · granulated · micron grades |
| Target species | Ruminants — dairy cattle, beef cattle, sheep & goats |
| Cost benefit/ROI | Buffering at 102 g/cow/day against 280 g of sodium bicarbonate — with higher milk fat, fat- and energy-corrected milk, and feed efficiency (Vieira et al., 2022) |
Request the LithoNutri™ brief.
Technical brief, mineral analysis, specification sheet, certificate of analysis, and the full trial dossier (dairy, beef and small ruminants). Our team will recommend an inclusion rate for your diet and production stage.