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.
Today’s dairy cow is producing more milk than ever before, and more than was even imagined a generation ago (see graph below). That means that the cow’s requirements for nutrients are higher than ever to achieve that phenomenal production level. Those nutrients are needed to maintain her body condition, produce milk, and finally, produce a calf.Read More
Research reported in 2012 first noticed that crude protein from canola meal was used more efficiently than that found in soybean meal. With this new finding, investigators at the USDA Forage Research Center sought to compare soybean meal and canola meal in three different ratios of alfalfa-to-corn silage. The results of the research are reported in the table below.Read More