Water Soluble Carbohydrates (WSC)
Definition
Water Soluble Carbohydrates (WSC) refer to the fraction of carbohydrates in forage that dissolve in water. WSC includes ESC (ethanol-soluble sugars) and fructans, making the WSC content of hay generally higher than the simple sugar content measured in analysis.
Importance
Understanding WSC is essential for:
- Nutritional Planning: WSC provides a quick source of energy for horses and ruminants.
- Health Management: High WSC levels can pose risks for animals prone to metabolic disorders such as laminitis.
- Feed Processing Decisions: Soaking hay can reduce WSC, which is important for managing sugar intake.
Relationship Between WSC and Sugars
The WSC value is always higher than the sugar content because it includes both sugars and fructans. This distinction is important when evaluating forage for animals with dietary restrictions.
Effect of Soaking
When hay is soaked in water, part of the WSC leaches out. Knowing both sugar content and WSC levels helps determine how much carbohydrate can be removed through soaking, aiding in diet adjustments for sensitive animals.
Role in Forage Analysis
Measuring WSC provides a more complete picture of the carbohydrate profile in forage, supporting informed feeding strategies for animal health and performance.
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