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Find out more about RONOZYME® RumiStar™ > Releasing the full value of corn in dairy cattle Getting more milk from a given amount of feed and increasing productivity and efficiency, whilst ensuring herd health, is the goal of all dairy farmers, as feed is the greatest cost factor. Feed enzymes are common tools in monogastric nutrition, however, before now feed enzymes have not been successful in ruminant nutrition. DSM has spent the last 13 years researching and developing the first ruminant enzyme RONOZYME® RumiStar™. This enzyme has gained EFSA approval as a digestibility enhancer in dairy cows. It was designed to improve feed digestibility, utilization and, ultimately, increase energy availability to match the daily requirement of high yielding dairy cows. This is a new innovative development in dairy cow nutrition, which helps farmers achieve increased dairy herd efficiency. RONOZYME® RumiStar™ is an alpha amylase that increases the efficiency of corn starch utilization in dairy cows, increasing the supply of energy to the cow. When fed to the cow it increases the rate of corn starch degradation in the rumen. The corn starch is broken down to oligosaccharides. Oligosaccharides fuel cellulolytic bacteria, which are responsible for digesting cellulose into feed, nitrogen is used, and microbial protein yield in the rumen increases. This leads to improved fiber digestibility, which delivers more acetate in the rumen. The acetate is then absorbed into the blood, enters the udder and is used to help produce milk fat. Rumen pH is unchanged, resulting in improved digestibility with no reduction in rumen health. The amylase also works in the small intestine, increasing starch digestibility. The overall effect is more starch and fiber are digested through the increase in fiber digesting bacteria, resulting in less starch wasted and less fiber in the feces. More energy, through glucose propionate and acetate, reaches the cow. This will result in more milk, more butterfat and a better energy balance; and, most critical in the current economic climate, better efficiency. RONOZYME® RumiStar™ releases the full value of corn to the cow. If a dairy herd of 500 cows fails to digest 5% of starch, this results in 22.5 tons of waste corn grain over 100 days, this equates to a cost of €3,000. RONOZYME® RumiStar™ releases more of the starch energy in corn-based rations, providing more energy to the dairy cow and increasing forage digestion. As a result, cows make better, more efficient use of their total diet, which can reduce feed costs and boost milk efficiency.