This video from the My Forage System channel explains how to compare the quality of grass silage and corn silage.
Here is a summary of the key points:
Metrics to compare silages
There are several metrics to compare silage quality, including:
The relative value of foods (RVA): It makes it possible to estimate the quantity of milk produced per ton of dry matter.
Neutral Detergent Fiber (NDF): It measures the quantity of fibers in silage.
Acid Detergent Fiber (ADF): It measures the quantity of indigestible fibers in silage.
Crude protein content: It indicates the quantity of protein in the silage.
Ash content: It indicates the quantity of minerals in the silage.
Conclusion
It is important to compare the quality of silages to ensure that they provide animals with the nutrients they need. RVA is a useful metric for comparing silage quality, but it's important to consider other factors, such as animal type and production goals.