A new South Dakota State University publication explains the difference between relative feed value (RFV) and relative forage quality (RFQ), the indexes used to assess forage quality.

The more widely used RFV index assesses quality, helping hay buyers and sellers price forages. The RFQ index, introduced three years ago, accounts for differences in digestibility of the forage's fiber fraction and can be used to more accurately predict animal needs and performance.

The publication, Understanding Relative Feed Value and Relative Forage Quality, is authored by Peter Jeranyama, SDSU extension forage specialist, and Alvaro Garcia, SDSU extension dairy specialist.

To view the publication, visit dairy http://dairysci.sdstate.edu/NewPublications.htm, then scroll down to click on its title.