Weaning Piglets Without Problems: Supporting Intestinal Health After Weaning
28 August 2024
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4 minutes
The piglet weaning period implies a change in environment and nutrition, and results in reduced intestinal function. This article describes the potential negative implications and what can be done about them through means of nutrition.
Why the weaning period is so critical for piglets
Weaning is one of the most challenging phases in a piglet’s life. Within a very short time, housing conditions, diet and social structure all change simultaneously. This transition almost inevitably leads to a temporary reduction in feed intake and intestinal function. The way piglets cope with this phase strongly influences their health, growth performance and uniformity throughout the entire production cycle.
This article explains what happens in the intestines after weaning, the risks involved, and how targeted nutritional strategies can prevent problems.
The role of the intestines in weaned piglets
The intestines have two essential functions:
- Digestion and absorption of nutrients
- Acting as a barrier against pathogens
After weaning, piglets consume significantly less energy and feed than during lactation. This reduction has immediate consequences for the structure of the intestine, especially the intestinal villi. These villi increase the surface area of the small intestine and are crucial for efficient nutrient absorption.
Impact of reduced feed intake on intestinal villi
Research shows that:
- Low feed intake during the first 2–3 days after weaning leads to a pronounced reduction in villus height.
- High intake of a highly digestible milk-based or prestarter diet largely prevents this villus atrophy.
In other words: the faster piglets resume eating, the better intestinal integrity is preserved.
Villus atrophy, leaky gut and health risks
When intestinal villi shrink, fewer intestinal cells are available to absorb:
- Nutrients
- Water
Practical consequences
- Increased amounts of undigested nutrients reach the colon
- These nutrients promote the growth of pathogenic bacteria
- The risk of diarrhoea, inflammation and growth retardation increases
In addition, studies indicate that low feed intake in the first days after weaning can cause increased intestinal permeability (“leaky gut”). During this period, gaps between intestinal cells allow pathogens to enter the bloodstream more easily. Stress and infections further exacerbate this process.
Variation in feed intake within a litter
In practice, not all piglets start eating immediately after weaning. On average:
- 10–20% of piglets consume little or no feed during the first 2–3 days
These piglets are most at risk of:
- Severe intestinal damage
- Health problems later in the growing phase
Ensuring early feed intake for every piglet is therefore crucial.
Optimal feeding strategy after weaning
Early-weaned piglets (3–4 weeks of age)
Piglets weaned at a young age typically have limited experience with dry feed before weaning. As a result, they are not yet well adapted to solid feed and often show a sharp decline in intake immediately after weaning.
Recommended nutritional approach
Days 0–3 after weaning
- Provide a highly digestible, energy-rich prestarter
- Focus on:
- High palatability
- Rapid energy supply
- Protection and support of intestinal structure
After a maximum of 3 days
- Gradually switch to a standard weaning diet
- This diet is formulated to:
- Support rapid repair of intestinal damage
- Ensure a smooth transition to the next feeding phase
This strategy supports both intestinal health and uniform growth within the group.
Conclusion: nutrition as the key to problem-free weaning
The first days after weaning are decisive for intestinal health in piglets. Insufficient feed intake leads to villus atrophy, increased pathogen pressure and reduced performance. By investing in a well-designed feeding strategy with a highly digestible prestarter, many post-weaning problems can be effectively prevented.
Healthy intestines during weaning result in:
- Lower mortality
- Better growth performance
- Improved uniformity
- Stronger technical results throughout the production cycle
