Lower gut management in ruminants
Understanding lower gut dysbiosis
Throughout their lives, ruminants face repeated stressors and transition periods—from weaning and diet changes to calving, transport, commingling and environmental stress. Each of these events can disrupt the balance of the lower gut microbiota, leading to a condition known as lower gut dysbiosis.
When the lower gut is out of balance, digestion, nutrient utilization and intestinal barrier integrity are compromised. The impacts often appear as reduced performance, greater variability between animals, and heightened vulnerability to health challenges during periods when resilience matters most. Over time, unmanaged dysbiosis can impair recovery from stress and limit an animal’s ability to reach its full productive potential.
Proactively supporting lower gut health helps ruminants maintain microbial balance, protect gut function and perform more consistently across life stages—especially during critical windows when stress and challenge overlap.
Managing the lower gut: Lallemand’s approach
A balanced, functional lower gut microbiota is a cornerstone of intestinal and overall health in ruminants, from early life through major transition events such as calving or receiving at the feedyard. Nutritional strategies grounded in microbiology can play a key role in stabilizing the gut during these vulnerable periods, when the risk of dysbiosis—and its downstream consequences—is highest.
Lallemand Animal Nutrition applies a nutrition‑driven, science‑based approach to lower gut health management. Our goal is to support intestinal function and microbial stability across the ruminant lifecycle using targeted microbial solutions with documented research outcomes.
Our goals for supporting lower gut health:
- Support early‑life gut development and immune development
Help maintain intestinal integrity and microbial balance in young animals, reducing the risk of diarrhea associated with enteric challenges (e.g., rotavirus, salmonella) while mitigating longer‑term consequences such as impaired nutrient absorption, delayed growth and increased morbidity. - Limit inflammation and systemic impacts linked to dysbiosis
Support gut stability to reinforce the animal’s natural immune defenses and help reduce gut‑driven disruptions that may contribute to challenges affecting distal organs, including respiratory, metabolic or liver‑related disorders. - Protect and support normal gut barrier function
Help maintain appropriate intestinal permeability during the stressful periods to limit the risk of “leaky gut,” reducing its contribution to systemic inflammation and supporting metabolic efficiency and immune function.
Why specific microbial solutions matter in the lower gut
When the right strains are applied for the right purpose, microbial solutions in the lower gut can help:
- Support microbial balance in the intestinal tract
By promoting a more favorable microbiota composition, specific probiotics help reinforce stability in the lower gut and reduce conditions that favor dysbiosis. - Support gut barrier integrity
Targeted microbial strains can help strengthen epithelial integrity through support of tight junction function and mucus production—key components of a healthy intestinal barrier. - Contribute to natural defenses and immune function
By supporting a balanced and appropriate immune response, specific probiotics help the animal better respond to stressors without excessive or prolonged inflammation.
Why choose Lallemand?
As a global leader in yeast and bacteria production, Lallemand Animal Nutrition has developed a comprehensive nutritional approach to address lower gut challenges in dairy cows, beef cattle and small ruminants. Our scientifically-backed microbial solutions enhance rumen function, boost immunity and improve overall animal performance. Supported by our expert team, we provide on-farm evaluations to identify challenges and offer tailored recommendations. With our proven results and dedicated support, Lallemand ensures your cattle stay healthy and productive, even in the most challenging conditions.
Key figures about gut functions
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1 Jenks et al., 2015. Effects of Saccharomyces cerevisiae boulardii supplementation during the receiving perio on growth efficiency, and behavioral and health responses in newly weaned beef heifers. Plains Nutrition Council Spring Conference. April 16-17, 2015. San Antonio, Texas.
2 Keyser et al., 2007. Effects of Saccharomyces cerevisiae subspecies boulardii CNCM I-1079 on feed intake by healthy beef cattle treated with florfenicol and on health and performance of newly received beef heifers. J Animal Sci., 85: 1264- 1273 (Experiment 2).
3 ADSA presentation, Mike Steele.
4 Villot & Steele, et al., 2018. Effect of Saccharomyces cerevisiae boulardii supplementation on the health and performance of male Holstein calves. University of Alberta, Canada, 2018, Abstract ASAS 2018.
5Schmidt, 2015. Immune response of newly received feedlot steers supplemented with Saccharomyces cerevisiae subspecies boulardii CNCM I-1079 during the receiving period (28d). Presented at: Academy of Veterinary Consultants Summer Meeting; Aug. 6-8, 2015; Denver, CO.
6 Steele et al., 2016. Development and physiology of the rumen and the lower gut: Targets for improving gut health. J Dairy Sci. 2016 Jun;99(6):4955-4966.
7 Zened et al., 2021. Les microbiotes des ruminants : état des lieux de la recherche et impacts des microbiotes sur les perforances et la santé des animaux. INRAE Prod Anim. 33(4), 249-260.
8 Jung et al., 2010. Peyer’s Patches: The Immune Sensors of the Intestine. Int J Inflam. 2010 Sep 19;2010:823710. doi: 10.4061/2010/823710. PMID: 21188221; PMCID: PMC3004000.