What percent calcium should a dry cow ration contain according to the NRC?

The correct percentage of calcium that a dry cow ration should contain, according to the National Research Council (NRC), is 0.39 percent. This recommendation is based on the nutritional requirements that support the overall health and development of the dry cow, particularly in preparation for the lactation period. Adequate calcium is crucial for bone health and metabolic functions, which are especially important in the later stages of gestation.

While other percentages might appear close, they do not align with the NRC's established guidelines for the nutritional needs of dry cows. Using the specific recommendation of 0.39 percent ensures that the cow receives sufficient calcium without risking imbalances or deficiencies that could affect her health and milk production during lactation. It is important to adhere to these guidelines to ensure optimal performance and well-being of dairy cattle.