ISSUE FOCUS 36 FEED & ADDITIVE MAGAZINE March 2025 and improving the fat and protein content of the milk through enhanced nutrient utilization. This yeast probiotic not only boosts productivity by promoting efficient digestion and nutrient absorption but also contributes to the overall health and reproductive performance of the herd. Moreover, it contributes to sustainable dairy farming practices by decreasing undigested feed particles and optimizing nutrient use. These improvements coupled with a reduced carbon footprint demonstrate the environmental advantages of incorporating Actisaf® Sc 47 into dairy cow diets. RUMEN HEALTH FOR A SUSTAINABLE DAIRY COW Rumen health is commonly managed through diet, particularly during the cows’ dry period, when milk production ceases until the next calving. This phase involves significant dietary adjustments requiring adaptations in the rumen’s structure and microbial composition. On one hand, the rumen papillae, which are small, finger-like projections lining the rumen wall that increase the surface area of the rumen, elongate. This elongation enhances the absorption of nutrients, improving the cow’s ability to absorb VFA and thereby maintaining its energy balance and overall health. This imbalance occurs when energy is sourced from the mobilization of adipose tissue, potentially elevating the levels of ketone bodies such as beta hydroxybutyric acid (BHBA) in the blood stream. In a trial (Minuti et al. 2018), compared to the reference period (control group), Actisaf® Sc 47 supplementation group resulted in a 4% increase in FCM yield, equivalent to 1.38 kg per cow per day. Additionally, systemic inflammation was reduced by 30%, as evidenced by a decrease and stabilization in BHBA levels. The reproductive efficiency of dairy cows plays a critical role in maintaining the health of the herd and the financial sustainability of dairy operations as it directly influences milk production. Enhancing dairy cow fertility can significantly reduce the environmental footprint of milk production. Given that improved reproductive efficiency
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