The Study
INTEGRATED ANALYSIS OF SOIL–PLANT–ANIMAL DYNAMICS IN CONVENTIONAL AND VOISIN GRAZING SYSTEMS
This study shows that cows and plants did better in one type of grazing system compared to another, but it doesn’t prove that the system caused the improvement. It’s like noticing ice cream sales go up when it’s hot — they’re linked, but we can’t say one causes the other without more careful testing.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
When cows are moved around in a smart way (called Voisin Grazing), the grass grows better, there are fewer weeds, and cows gain more weight than when they stay in one place all the time.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 510 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, this means farmers can produce more meat or milk using less land and fewer chemicals, while also helping the environment.
- 2Voisin Grazing made 31.7% more grass, cut weeds by 16%, and cows gained 0.78 kg per day instead of 0.58 kg.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Revista Multidisciplinar do Nordeste Mineiro
Year
2025
Authors
Rodney Murillo Rodney Murillo, Edilson Silva de Olivieira
Related Content
Claims (5)
If you keep chickens on the same pasture all the time without rotating it, the soil gets worse, the grass doesn't grow as well, and there are fewer bugs and plants for the chickens to eat.
Using a smart grazing method called Voisin Rational Grazing can boost grass growth by over 30% in Brazil’s pastures, meaning more food for cows and other animals in similar climates.
Using a smart grazing method called Voisin Rational Grazing might cut down weeds in tropical pastures by 16%, making the grass healthier and easier to manage than if animals just graze all the time.
Using a smarter grazing method called Voisin Rational Grazing might help more types of grass grow in Brazilian pastures, especially two kinds called Brachiaria brizantha and Panicum maximum, compared to how most farmers graze their animals.
Cows on a smarter grazing system in Brazil gain more weight each day than cows on traditional grazing — about 0.78 vs. 0.58 kg per day — which means they're growing better with this new approach.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.