What is MUN?
Most milk tests report milk urea nitrogen (MUN) levels, and these values can provide significant insight into how dairy cows are using ration protein. MUN is a natural occurrence in cows, and is caused by protein consumption. When cows ingest protein, it is either broken down in the rumen to become available to rumen microbes or escapes to be an available supply of protein and amino acids to the cow for milk production.
Evaluating dairy ration protein sources requires looking at multiple factors, especially in today’s ever-changing market. Research typically suggests using a very simple metric to evaluate protein in a ration: protein efficiency. This measures milk protein yield per cow per day as a function of protein consumed by eating the dairy ration. Currently, averages are between 25% and 30% – a value that has been steadily improving.Read More
We’re not speaking Greek! In situ is a valuable method of nutrition research, and we’d like to explain what it is and how it works. An in situ test helps us to understand what happens to feed ingredients in the rumen of dairy cows, as opposed to how the feed ingredient interacts with the whole cow.Read More