ISSUE FOCUS FEED & ADDITIVE MAGAZINE March 2025 27 The newest research continues to show a consistent milk production response across many production situations. Cows supplemented with rumen-protected choline produced an additional 667 to 1.072 kilograms of milk annually (Bollatti et al., 2020; Swartz et al., 2023; Holdorf et al., 2023). The milk production responses were seen in very high-producing cows, regardless of health status or body condition score. Recent research from multiple universities has shown that cows supplemented with ReaShure®- XC Precision Release Choline during the prepartum period produced up to 85% more colostrum compared to unsupplemented cows (Swartz et al., 2022, Figure 2; Holdorf et al., 2023). In addition to higher volumes, some trials also reported improvements in colostrum quality, including increased immunoglobulin G (IgG) levels (Zenobi et al., 2018). These outcomes are crucial for calf survival and growth, setting the foundation for future lactation success. While milk and colostrum yield dominate the conversation, the benefits extend beyond production metrics. Choline’s role as a metabolic enhancer helps reduce the incidence of transition-related disorders, such as ketosis and fatty liver, which are major contributors to early culling and lost profitability. By promoting liver function and fat metabolism, rumen-protected choline supports smoother transitions and healthier cows overall. A NARRATIVE OF PRODUCTIVITY AND PROFITABILITY For dairy producers, the transition period is a delicate balance of challenges and opportunities. Rumen-protected choline serves as a cornerstone of nutritional strategies designed to optimize this critical window. By investing in a 42-day supplementation protocol, producers can expect tangible and lasting benefits that extend well into the lactation cycle. Figure 2. Effect of ReaShure-XC supplementation on colostrum yield Figure 1. Effect of feeding ReaShure during the transition period on milk production over the full lactation
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