Nutrition Notes Influence of Kent Natural Yeast on Rumen Dynamics Facebook Twitter LinkedIn Before digging into the influence Kent Natural Yeast (KNY) has on rumen dynamics, it should be noted that not all yeasts are created equally. Therefore, function and impact on animal performance differs between the various yeast products available on the market. Research findings reported in this Nutrition Notes describe KNY only and should not be extrapolated onto other yeast or yeast culture products. Kent Natural Yeast is a killed, brewers yeast supplement that has undergone full alcohol fermentation at the brewery before undergoing a proprietary manufacturing process. The KNY product formula is unique, and only found in our bags. The unique formula, type of brewers yeast, and manufacturing process all contribute to making KNY the most palatable yeast available. Its nutrient profile, biologically available vitamins and minerals, and unique metabolites contribute to its overall function and ability to support immune and gut health in all species’ diets. This Nutrition Notes focuses on the evaluation of KNY in fermenters with a continuous culture of rumen microorganisms. Research was done using an independent third party, at a University setting. Our objectives were to evaluate the effects of KNY on short chain fatty acids (SCFA), methane output, ammonia concentrations, and pH. Research Results Results indicated microbial physiology was altered by shifting fermentation from predominantly an acetate population to an increased propionate population. Propionate is associated with increased capture of carbon that is usually lost as methane. When this occurs, it often results in an overall increase in animal efficiency. Data also reported methane production was reduced in diets containing KNY. These findings may correlate with the SCFA data reported in the previous paragraph. This correlation may be due to the possibility of capturing the carbon that is usually lost as methane. Lastly, the inclusion of KNY in the diet tended to inhibit the decline in ruminal pH often associated with diet transition to high concentrates. Diets containing KNY had a gradual change in pH, whereas diets without KNY had a more drastic change in pH during times of diet transition. This drastic change in pH is often associated with acidosis and other health challenges. The presence of KNY in the diet also tended to reduce the concentrations of ammonia-N in ruminal cultures. Short chain fatty acid data is presented in Table 1, while pH, ammonia and methane data is presented in Table 2. Download PDF Related Nutrition Notes Derecho Damaged Corn The Derecho damaged an estimated 40 million acres of farm landing, laying fields of corn bent and broken, if not completely flat. This article investigates designing and using cattle grazing… Read More Kent Performance Primer When stress happens it often impacts livestock in more than one way, such as feed intake, maintenance requirements, and even health status. Learn how Kent Performance Primer has proved successful… Read More The NutriVantage® / Optaflexx® Advantage After observing the positive effects of NutriVantage on overall feedlot performance we were interested to see if there were additional benefits to combining it with Optaflexx, a product known to… Read More Want to learn more from KNG research? Give us your email address to be notified when we publish new Nutrition Notes articles.