Summary and Implications
Delayed harvest and subsequent advances in maturity decrease quality as does rain leached hay that has been cut. Both situations result in increased hay fiber content relative to available energy and protein. Quality of first cutting grasses tends to be more affected by advanced maturity. Legume or legume mixed forage may tend to have a greater quality reduction from rain leached windrows.
Iowa State University
Dahlke, Garland R.; Leu, Byron; Schwab, Denise; Sellers, H. Joe; Doran, Beth; and McDonald, Clint
"2010–2011 Beef Forage Summary—Cutting Dates and Quality
Animal Industry Report:
AS 658, ASL R2685.
Available at: https://lib.dr.iastate.edu/ans_air/vol658/iss1/17