You won’t identify it during a routine flock inspection.
Body condition may appear acceptable. Grazing availability may seem adequate. Yet at a metabolic level, a large proportion of grazing sheep in South Africa operate in a chronic negative energy balance, particularly during seasonal transitions.
The root cause is not always feed scarcity. It is nutritional inconsistency.
Natural grazing systems are inherently unpredictable, often characterised by variable dry matter availability, fluctuating levels of metabolisable energy, selective grazing behaviour by the animals, and a gradual decline in digestibility as plants mature.
This creates unstable rumen fermentation patterns, limiting volatile fatty acid (VFA) production; particularly propionate, which is critical for glucose synthesis.
The consequences of this inconsistency are not always immediately visible, but they are significant. Growth rates are reduced as energy supply fails to meet physiological demand, while reproductive efficiency becomes compromised due to insufficient nutrient availability at critical stages. At the same time, animals become increasingly susceptible to environmental stress, as their metabolic reserves are already under pressure.
High-quality silage fundamentally alters this system by introducing consistency where grazing cannot. It provides a reliable supply of metabolisable energy, ensures a more uniform dry matter intake, and delivers a stable source of fermentable substrate to the rumen.
Winterstorm silage can be used as a supplement to grazing, or as a full feed.
The result is a predictable rumen environment; one where microbial activity can function optimally, which ultimately forms the foundation of sustained animal performance.
At Winterstorm, silage is not treated as preserved forage, but as a precision fermentation product, designed to stabilise intake and eliminate variability.
Consistency is not a luxury in sheep production; it is a prerequisite for profitability.
Unlock your flock’s full potential! The secret is in the bag with Winterstorm Kuilvoer.
Next month: What silage actually does inside the rumen.