Vitamin C (ascorbic acid) plays a significant role in enhancing gut health and nutrient absorption in poultry and swine production systems. In poultry, Vitamin C contributes to maintaining the integrity of the intestinal mucosa, thereby improving nutrient uptake and overall growth performance (Miller et al., 2005). It has antioxidant properties that mitigate oxidative stress in the gut lining, which can otherwise impair nutrient absorption and increase susceptibility to intestinal diseases (Kang et al., 2014). Supplementation with Vitamin C has been shown to reduce intestinal permeability, promoting a healthier gut environment in broilers exposed to stressors such as heat or pathogen challenge (Huang et al., 2017). Similarly, in swine, Vitamin C enhances immune function and supports intestinal morphology, including increased villus height and reduced crypt depth, which are indicators of improved nutrient absorption capacity (Li et al., 2019). It also aids in the stabilization of collagen and connective tissues within the gut, contributing to gut barrier integrity (Zhang et al., 2018). Furthermore, Vitamin C supplementation has been associated with improved feed conversion ratios and growth rates by optimizing nutrient utilization (Huang et al., 2020). In stress conditions, such as weaning in piglets, Vitamin C reduces oxidative damage and supports gut resilience (Liu et al., 2016). Overall, adequate Vitamin C levels positively influence gut health, thereby enhancing nutrient absorption efficiency and production performance in poultry and swine (Gao et al., 2021). Despite its endogenous synthesis in swine and some poultry species, under stressful or pathogen-challenged conditions, supplemental Vitamin C becomes crucial for maintaining optimal gut function (Huang et al., 2019). Future research should focus on optimal dosing strategies to maximize gut health benefits across different production stages and environmental conditions (Kim et al., 2022).
Promois International (www.promoisinternational.com) is one of the best-known manufacturers of encapsulated vitamin C.