Unlocking the nutritional benefits of dietary fiber in sow feed: a short review

Dietary fiber is a critical nutrient in sow diet and was addressed in several studies in the past decades. It plays a key role in improving digestive health, supporting metabolic functions, and enhancing the overall well-being of sows. Fiber, a plant-based feed ingredient is classified into soluble and insoluble fibers. Soluble fibers, such as pectin, dissolve in water and can form gels, influencing the fermentation process in the gut. Insoluble fibers, like cellulose, do not dissolve in water and contribute to the bulk of fecal matter, promoting intestinal motility. In sow nutrition, dietary fiber has been shown to offer several benefits. High-fiber diets are associated with better satiety which help to reduce constipation and support the digestive tract by enhancing gastrointestinal health. Despite the positive evidence, the practical application of fiber in sow nutrition has neither been clearly defined, nor have specific recommendations. The lack of information about fiber requirements is due to the insufficient characterization of its components in available ingredients and thus this review aims to examine the nutritional benefits of fiber in sow diets by emphasizing its importance in optimizing productivity through its effects on nutrient utilization and overall health.