Home > Crops & Livestock > Livestock > Dairy > Genetics > Animal Genetics Collected, Stored To Preserve Long-term Diversity Although there’s not an imminent danger, some scientists say a widespread disease or bioterrorism attack could wipe out significant portions of the U.S. farm animal population. That's where the National Animal Germplasm Program comes in. Take a Look at Fluid Merit Dollars (FM$) as a Sire Selection Criteria The USDA Dairy Sire Summaries now include three selection indexes that can be very useful in simplifying sire selection. These are called Net Merit Dollars (NM$), Cheese Merit Dollars (CM$) and Fluid Merit Dollars (FM$).